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Mercruiser ecm problems. That was the first year for the 8.

On first time out it ran smooth but seemed lacking on power. May 27, 2019 · If you own a late model Mercruiser engine in your boat, you're almost guaranteed to run into one of these common problems. Get a good schematic and a volt ohm meter and follow the path from key on hot to the computer could be a bad fuse or it has dirty connections. With an unwavering commitment to excellence, we have set the industry standard for precision, quality, and innovation. 0 MPI Mercruiser with less than 5 hrs. 2L MPI INBOARD EC - 6. 1 HO. Engine overspeed indicates a condition that should be corrected. I have a 4. A "CKT HI" fault means that the ECM/PCM is seeing a 5. ECM's are expensive and do NOT go bad very often. Maximize Mercury Mercruiser performance with the Jaltest Marine Diagnostic Tools. Mar 17, 2005 · Re: Mercruiser 496 HO - Difficult Diagnosis Wiggled, poked, twisted, shook, tapped, you name it, I did it. Jul 28, 2010 · 3,105. Connected a graphing/recording multimeter to the power supply for both, when the problem occurred there was no interruption of power. Not the ground. ) exhaust manifold cooling temp overheat. The ECM uses inputs from sensors throughout the motor to monitor operating Jul 14, 2022 · This video is on how to test a MEFI 1-4 ECM to determine if it has failed. Aug 14, 2012 · Re: mercruiser ignition control module? with a carb, the ECM controls ignition advance, knock control, rev limiter, and shift interupt with an alfa drive. Apr 10, 2019 · hello, new poster here. 7 tbi efi engines, starboard runs perfect but port engine took a dump on me and doesn't want to start. 2012 - Up Outboard EFI engines: All models Adapter #94023 or #94029 GM RamJet Crate Engines. I bought a 350 MAG Bravo ECM0713 dated 02-27-2013 (8M2001111) (8M2003678) (A30004IS) bar codes. Jun 2, 2014 · 496 HO Problems - Help Please. Single beep every 2 or 3 minutes, (or so). I have a 2002 5. 1s. Apr 30, 2007 · New member. <br />Your problem could be anything from a dirty boat bottom, bad prop, to an ECM meltdown. 1S), but the basic features are similar for ECM-555 engines . #7. May 28, 2023 · Quick View of Mercruiser 8. Can anyone provide the timing angle for the 2000, 2001 454 MPI at the following: idle (700), 2000, 3000, 4000 RPM. When MerCruiser uses an oil pressure switch for the fuel pump (on carb engines only) they use it to control the power. Hello to everyone, New to this forum, proud owner of a Chris Craft Scorpion 210 with a mercruiser 350. 1S. Apr 30, 2007. Application: Mercury 40HP, Mercury 50HP, Mercury 60HP, Mercury 90HP 221-1091-1. I don't have any experience with older ECM and am amazed if a motor that old would have issues. Above 3,000 RPM, the TKS ECM does not affect ignition timing Jun 3, 2021 · However, they are gold when trying to run down problems with the ECM’s on our EFI engine set ups. I have recently purchased a 2004 5. —Haven’t touched the props or Bravo III drive (same as before repower) between the sensor and the ECM/PCM is open or shorted. Ho Oct 18, 2008 · 16. 7. Sep 3, 2010. PN: 8M0089619, 8M0048235, 8M0059789, 8M0110469, 8M0113386,8M0054846, 8M0088062, 8m0076393. Compression checked; perfect on all 8 cilinders Engine fires up right away, runs for a couple of seconds @ +- 1000 rpm and returns to (bad) idle. offshoreonly. ) engine overspeed, 4. Apr 12, 2019 · Apr 13, 2019. 7l ones. Bad ECM Symptoms: Mercury Mariner. Solution. 2). That was the first year for the 8. Electrical, ignition, and fuel system components on Mercury Marine products comply with U. Runs good at wide open throttle. 4,269. Our ECM repair service even has a one Motorola Mercury Marine ECM 5550204 Repair Service will be returned fully reconditioned, tested, and ready to be installed back to the exact vehicle it came off, saving you the time & expense of having a new ECM programmed to your machine. Clogged pump or pump failure. Aug 5, 2018 · This home made code tool works every bit as well as the one I paid $50. May 27, 2021 · Tein Mercury 7. 6L. Oct 17, 2008. Founded by the innovative Art Whipple in Fresno, CA, our journey from racing circuits to leading supercharger technology reflects a commitment to excellence. Feb 14, 2020 · Mercruiser Catalyst engine wire harnesses explained ,Freshly Rebuilt 5. 045-. We will fix your computer upon arrival Jun 7, 2017 · I have a 97 four wins with a 5. The cost for this is significantly less than the cost of a replacement module. 00. This goes smoothly everytime. The motor has recently been rebuilt and runs great except for the lack of power. In a search, I stumbled across this info: This is the issue but I don’t have a part number match. Fuel Delivery Issues. "I have a 3 yr old 350 Mag MPI w/alpha one outdrive. Here is some history: Its in a 22' walkaround coupled to a bravo III drive that used to Oct 14, 2015 · Situation: ECM (sent to OBD and confirmed its toasted) Boat: 2000 Shamrock 246 wa Engine: 5. 0 MPI is part number 885176 Jul 23, 2008 · Boat Info. Get on a plane, and within 10 minutes I get two loud "beep" engine alarms every minute. 16. 7 and the computer must be for the 5. 1999 Sea Ray 330DA Twin 7. com/forums/attachments/general-q/283227d1182567957-led-mefi-codes-code03. Below is some information about Sticky and non sticky faults. Been fighting this problem for 2 1/2 years with no change at all. May 14, 2019 · General Q & A - Mercruiser 5,0 mpi- rough idle/stalling ecm 555 - I rebuild a 2004 mercruiser 5,0 MPI and I'm having problems with bad idle (too high or stalling). Mechanic recommends a new ECM, but the quote was $4,000 for the part and labor to install the thing. Revise Search: All Models > 4. We need to buy new ECM. The Engine is a VM Motori LI 706 Bulidt in Italy and Belgium. #2. Engine: 2003 Mercruiser 350 Mag MPI. The boat runs fine once you get above 1200-1300 rpm but below that I never know if it will die when I back down on the throttle. Turn the ignition ON, but do not try to start the engine. Our repair service includes testing each PCM on an actual vehicle before it leaves our facility. Jun 13, 2017 · From searching the web, I found that the ecm's used by Mercruiser are produced by New Eagle. #1. Overspeed could be caused by incorrect propeller pitch, engine height, trim angle, etc. 7L MPI MIE EC. For giggles get a can of electrical cleaner and some dielectric grease and one by one pull a connector and clean it and put back together with dielectric. A shorted tach will kill spark. The two beeps per minute alarm is going off. Ser# OM351757. 0 MPI SN OW003759 with Bravo 3 SN OW108118. It will not run over 3000rpm We have done the following. Jun 4, 2020 · Jun 3, 2020. All fresh water operation. The symptons are: When I start the engine from cold, I allow the engine to warm up at idle. Engine serial number 0M033393. Jun 3, 2011 · Jun 3, 2011. Engine will run all day at low speeds. Throttle body injection. Oct 18, 2010. Apr 7, 2010 · Apr 7, 2010. module, plugs and wires, ECM, TPS, The throttle body assy goes into limp mode and shuts down one side of the injector before it planes out. Warranty. Billy6567 said: First, I'm Billy and I am a new to the site. What I think I'd recommend is when you get your boat back from the shop, every time you get it back, do some basic checking on it yourself before you try to go on the water. 4L MPI MEFI-3 ECM. Experience the Whipple difference in drag racing, circle track, and boat racing with our At Simon Performance Technology, we proudly stand as the world leaders in the testing and repair of Mercury Marine, Mercury outboard, and Mercruiser Engine Control Units (ECUs). 4 MB]. 3. It appears that the rev limiter is activating prematurely and randomly. The collector has a 3 catalyzer design (new design for Merc in 2011) that runs very hot. Not on the ECM555. We are r "Here is the problem. The pinouts of both units are excactly the same as described in the mercruiser service manuals. The shift function will not be available when called for by the ERC when the above fault. Oct 4, 2023 · Before I dive into all the problems let’s have a quick overview of the 5. With advanced engine control systems now standard on nearly all gasoline inboard and stern drive engines, you need a service tool that pinpoints problems quickly and accurately. In this issue: - Sterndrive / Inboard Direct Injection Since 1992 the GM Delphi MEFI ECM Controllers have been used in a wide variety of applications, including: Marine - MerCruiser, Volvo Penta, Crusader, Indmar, many boating applications. WE ARE IN NO WAY AFFILIATED OR SPO Sep 25, 2005 · Re: Mercruiser 5. <br />Sounds to me like your mechanic (agent???) is a parts replacer when you need a troubleshooter. 2000 - Up EFI engines: RamJet 350, RamJet 502 Adapter #94005 TurnKey Engines Oct 12, 2023 · By the way it is Twin Mercruiser 5. How do You Clear the Codes on a MerCruiser? Oct 10, 2012 · Nov 8, 2020. Took it out yesterday and it ran great, however after about 3 hrs, an alarm sounded. Use the fault code scanner to ensure smooth operations on the water. Put it in neutral and it immediately starts up with no hesitation and out of the hole no problem. #8. Due to their importance, all types of motor vehicles rely on ECMs, including carts and boats alike. Aug 17, 2010. The boat idles good. Where Used. Jul 21, 2008. 74 and IAC at 0 with idle of 900RPM and the other engine is TPS MerCruiser PCM-555 / ECM-555. 7 MPI - Check Engine Code Reset. I thought that the ECM or main power relay MUST be losing power. Engines. These engines are initially intended for the California market and are designed to meet California emission requirements. Oil or coolant leaks around head/block. ) low engine oil pressure, 3. AllDodge said: Disconnect the tach (gray wire) and see if it starts. To test your EFI system you will need special tool #91-823686A2 QuickSilver Scan Tool $1,170. thanks, Joe. the black flakes in the fuel would be my guess as the cause of your problems. Inspect and replace the fuel pump. Nov 19, 2023 · The ECM controls the engine’s performance and can be a common source of problems. We CAN work on these: Jun 7, 2016 · Model year 2006 Engine, s/n is 0W624841 at 400 hours. Mercury MerCruiser #36 ECM 555 Diagnostic - Service manual [PDF, ENG, 18. 1 Problems. How to hook it up: 1) Ignition key “OFF” 2) Remove the cap from the Data Link Connector (DLC) Mar 26, 2017 · Mar 27, 2017. 19. Electrical System Failures. If the ECM is faulty or out of calibration, you may need to replace it or have it professionally serviced. 79. All faults are classified as either Sticky or non-Sticky. com! stocks many of the Mercruiser electronic control modules. 0 EFIs 2001. 2) It only starts to sound when the boat is on a plane (RPM 3200 +) Delphi MEFI ECM Repair. 865836 with a serial no. Oct 30, 2015. 2. I am in need of some suggestions following an engine will not start but will crank situation I am encountering. The tacho signal is generated inside the ECU and not as a result of the pulse to the coil driver. triggered. The DTC’s are identified by two sets of numbers. Re: Distributor Ignition Sensor Mercruiser 5. [FONT=&quot]1. Inch. One very important aspect when using these – Not every fault code it reports is an issue. S. 2 Fuel Pump Problems. "Have I got a mystery for everyone! I've got a 350 Mercruiser mag mpi motor here (2000 era) that is missing about 80 to 100HP. Still running OK, oil pressure looked fine, temp fine, couldn't find an obvious explanation. 3 mercruiser ignition control module -HELP. This list is specific to PCM-555 engines (496 MAG and 8. Plugs, rotor, cap, wires changed fuel separator, even changed the coil and module assembly. 4L - 454 Cu. Photo is a stock photo and may not fully represent the item listed. pdf Hi there, I have a problem on my Mercury 2003 40 HP elpto ot638252. Plug the cable leads into the TPS sensor. We are running a MERCRUISER ECM MEFI-3. 0 MPI engine, the most effective solution is to replace the faulty fuel pump. *Free return shipping. #12. Very random shut off. 0, 350, 6. Many problems with MEFI ECMs can be fixed with a repair of your ECM. Page 5 Page iv View and Download Mercury MerCruiser ECM 555 service manual online. For more information, please check the official service manual. Here’s a step-by-step guide: Prepare the boat: Ensure the boat is safely docked or on a trailer. Coolant Sensor Problems. 3L MPI Alpha / Bravo > 0M615000 - 0W309999 > Electrical Components. If I'm not mistaken, the injector for a 5. install a new set of plug wires, including coil Here is an example of wave foam testing by us on a MEFI 3 ECM to show that we will work on a variety of different ECM units, including Mercury MerCruiser and Volvo Penta. Apr 12, 2019 · The purple wire from the key switch goes the ECM for wake up activation power then the below happens, Mercruiser ECM 555 ignition system operation: *When the ignition key is turned to the on position, the ECM 555 grounds the Main Power Relay control circuit. ECM stands for Engine Control Module, a computerized system that controls and monitors various aspects of the engine’s performance. Similar to ECM 555 engines (4. What the ECM Does. 04-28-2019, 11:46 AM. Like, being hard to start the boat, sounds from the engine, misfiring and backfiring of the engine, leaking of fuel, engine not getting enough fuel, no sparks, etc. #6. <br Dec 24, 2021 · Dec 24, 2021. 4L L-29 V8s Cast iron block w 4-bolt mains. [/FONT] The seawater pump pressure switch is the most common fault. (16 mm) mounting screws 5 Use with flat lifter engine 6 Use with roller lifter engine 7 With clip down distributor cap 8 With screw down Oct 30, 2016 · Supposedly Mercruiser has a bad, global problem with the above gas engine manifold and collector that many of us have. 7 Mercruiser common problems. Hello, I have twin 1998 mercs 5. Like someone turned key off. Recognizing the symptoms, potential causes, and solutions can help rectify this problem. 0l mcm Serial #OM336918 471 hours Maintenance kept to the letter. The only thing I noticed was prior to the Aug 14, 2020 · Aug 18, 2020. To resolve fuel pump problems in the Mercruiser 5. 7l it cannot be programmed to work, you will also need to swap the injectors for the 5. This includes MerCruiser, Volvo, Crusader, PCM, Indmar, and a few others. Explore the legacy of Whipple Superchargers, a family-owned and operated powerhouse since 1987. Turn-around time is 1-3 days. The advantage of the harness is to prevent a failed IAC from damaging the PCM, which is $2,000+ to replace. Friend had the same problem on his boat with the engine failing after a few hours of running, but his was a 2001. 3, 5. The Fox Marine MEFI-3 gateway seems to be a solution which passes Fuel Flow Rate, Coolant Temperature, Alternator/Battery Voltage, Engine Run † Purchase ICM / ECM units from a local MerCruiser dealer 1 Distributor mounted ignition amplifier 2 Exhaust elbow mounted ignition amplifier 3 Use with 1-1/4 in. It will work on most 1993 to 2000 marine EFI systems with the ten pin Data Link Connector. If your fuel fuel pump is missing the ground, the problem is in the wiring harness. My regular mechanic's engine computer code Apr 1, 2016 · Engine specs: 5. Single Replacement harness to use with 221-1090. There are a few different ways, but Jun 17, 2003 · 4. Part #94008 : Read Our Latest EFI Connections newsletter! Read about the latest systems from marine engine manufacturers and keep abreast of upcoming changes in engine technology. 0L engine. Mercury Marine ECM 8M0175147 Repair Service will be returned fully reconditioned, tested, and ready to be installed back to the exact engine it came off, saving you the time & expense of having a new ECM programmed to your boat. Sep 7, 2010 · Okay here is one for Sherlock Holmes: I have a 2004 Mercruiser 5. You could ground out the tacho signal, and the engine would still fire. Jul 14, 2021 · Rough idling. 2L MPI MIE EC. 7 Volvo penta which goes into limp mode. 3L EFI Mercruiser serial number OL 034997. This chart is for informational purposes only and is not necessarily applicable to any model. *We first diagnose the unit; if it’s not repairable or no problems are found, it costs $220. Mar 22, 2009 · The Mercruiser 4. Malfunctioning fuel pumps can cause fuel delivery issues, resulting in poor engine performance or even engine stalling. Replaced and now don't have fuel pulse at injectors, disconnected fuel rail at carb and shoots plenty of gas. #22. Have a 2001 Baja with a 496HO. It idles fine, runs great at mid-range rpm (3000-3800), runs great at higher rpm (3800+) occasionally if engine is cool. 065 volts. In this case, we will process a partial refund for the difference. In their product range they offer the ECM-555-48 (ECM48) which is called ECM555 and the ECM-555-80 (PCM80) which is called PCM555. 0 MPI Monterey. When I rev up the engine, either in neutral or under load, the engine works fine. K. Coast Guard rules to minimize risk of fire or explosion. It doesn't seem to backfire, it doesn't drop down in rpm more than Aug 5, 2019 · The ECM’s language for communicating the source of a malfunction is a system of Diagnostic Trouble Codes (DTC’s). 7 Mercruiser EFI Stern Drive, Bravo III. And it depending on the HP on this engine, but if its a 250HP it should do around 30 knots. 2011 Tahoe Q7SSi, 5. 7 Problems!! I hope the gauge was wrong and you actually had oil in there. I had a new We professionally repair your Mercury PCM or Mercury ECM for models Mariner, Milan and Sable. Problem. Engine Problems. 50. Once the engine warms up, if you try to maintain an rpm higher than 4000 it starts cutting out. Cost of Fixing The cost of fixing a Mercury 4 Stroke that won’t start will vary, depending on the type of problem and the parts that need to be replaced. I have a 2002 Mercruiser 5. Oct 30, 2015 · Messages. Here are the quick details: —24 foot Sea Ray that had a 350 Mag MPI. *Power from the 50-Amp circuit breaker mounted on the engine passes through the main Feb 14, 2001 · 64. We first diagnose the unit. Aug 24, 2005 · Sep 8, 2004. Fuel Pump Problems. I have replaced the coil and disconected the shift interrupter. Jun 26, 2010 · Messages. #15. Cause. 4. Set the scan tool to TPS voltage (or connect DVM) then set the adjustment screw for the lowest value & still touching the throttle arm stop. Re: Chevy 350 Engine/Mercruiser 5. 00 for. The Wires, Plugs, Distributor Cap, Rotor, and Fuel Filter have all been changed but the problem still exists. There is a Mid-Range misfire at around 1500 RPM. Engine had run perfectly for about 3 hours on the first outing of the summer season (good oil Oct 19, 2010 · Jul 27, 2005. Nov 10, 2023 · Well, there are many problems that you can face while using a mercruiser ignition coil. jpgQuestions? Comment below. Recording A list of Mercruiser engine alarms and fault codes has been widely posted all over the webby-net, so I reformatted it into a 1-page table that I can print and keep on the boat for reference. No Programming Required. There is nothing in the ECM that removes the ground for the fuel pump. 865008T04 – ECM Engine Control Module, freshwater cooling mode. The problem appears at the water temp, raw water pickup, the engine will not warm up, I can run the SIA Electronics has many other repairs available. The engine started and run fine at dock. *Fast turnaround time. I have a MX 6. May 27, 2013. The harness contains a replaceable fuse that will blow and prevent the shorted IAC from damaging the PCM (ECU-Computer). Stalling. This means I am dumping a lot of fuel and the plugs verify the diagnosis. It shuts the engine down suddenly when the computer gets too hot (not the engine temp). Poor acceleration. 2009-Up MerCruiser PCM-09 (Visteon) support. The system will limit the engine speed to within the allowable range. All these problems have solutions to solve them. This is an old post but I have the exact same issue on my 8. check to be sure you have a good, clean ground for the module - do not connect to the same ground as the sensor. 7 test run on ground, how to hot wire late model 14 pin with additional harnesses. ground the ignition sensor to the same stud on the block as the negative battery cable. I tried to replace ECM from other 383 (owned by neighbor – no freshwater cooling). *LIFETIME WARRANTY. Now the engine is called Cummins Meruiser. I was called in on this boat due neither engine has spark (ignition) and I found ne Diacom Marine is a powerful Windows based diagnostic tool that is revolutionizing marine engine service. Plug in the scan tool to the ECM. <br />An engine serial number is the best way to go with any marine engine. May 27, 2013 · 51. Jan 28, 2012. I am a pretty good auto mechanic so I performed a tune up on the old 305. The readings on the engine with the high idle are TPS at . May 28, 2023 · Problem 6: Mercruiser 6. Initial diagnostic said bad starter, not enough cranking power. 58. The ECM Marine Mercruiser Motorola 0501, 865926 is a component commonly used in marine applications, specifically in boats equipped with Mercruiser engines. ECM Mercruiser 78-8M0059248. and the shift position will remain in the gear location the engine was in when the fault was. ) sea pump PSI low. 7L EFI). May 20, 2023 · Solution 1: Fuel Pump Replacement. I have replaced the oxy sensors, both fuel pumps, changed oil, dist. 2L MPI, it appears that I am running cold based upon my scan tool. The scan tool reads live engine data including oxygen sensor May 29, 2012. "I have a 3 yr old 350 Mag MPI. Application: 2003 mercury EFI 225 Ot688171. Available to Order: Usually ships within 10 days. 2 Running Rough. Now, they are having problems with the manifold and collector leaking. Your Price: $2,430. 0 (or nearly 0) volt signal. Regularly inspect and clean electrical connections, ensuring a tight and corrosion-free connection. "J1-14" S116 A B Not Used Fuel Pump Relay Fuse 15A ABPNK 339 Fuel Pump Relay 85 30 86 Fuse Block ECM Fuse 15A Fuse Block C D BRN/ WHT 419 BLK/ WHT 451 ORN 440 DLC Connector FGHJK EDCBA From S117 3 J1 10 J2 27 2 J1 ORN 461 Diagnostic "Test" Terminal Malfunction Indicator Lamp (MIL) Serial Data ECM Ground ECM Ground Master/ Slave Here are the codes: https://www. **This is a Repair & Return for your part. Took boat back out, ran great, until I ran HARNESS ASSEMBLY, Extension (Lube Bottle) (1 required per assembly) 84-812733A 2 - Harness [ More info ] $22. If it’s not repairable or no problems are found, there will be a charge of $200 plus return shipping costs. 0L Motorola ECM 555 with the part no. I have a 1995 Mercruiser 4. Off-Road - Sand rails, race cars, industrial engines, and more. 3 also with no spark. Do not use replacement electrical or fuel system components that do not comply with these rules. Aug 24, 2005. Milky substance inside oil cap. Clean/rebuild carburetor, replace air filter Sep 1, 2014 · As Thumper stated, the solid alarms and a couple more listed below. On my 2002 Rinker 342 Fiesta Vee, there were 4 fault codes that always reported but the boat ran just fine. MerCruiser introduced the PCM-09 ECM module on their 2009 model year engine's equipped with catalytic converters. capecodcruiser said: That myth of auto reset is just that, a myth. It starts and idles great. May 29, 2020 · The ECM controls and directs your entire drivetrain (unless there is a serrate transmission controller). Sometimes also called an ECM (Engine Control Module), these modules can be damaged by failed ignition coils and spark plugs. The warning horn is activated any time engine speed exceeds the maximum allowable RPM. 4 MPI (310 propshaft HP) V-drives. 7l plus EFI (350cid) This inboard engine says seamaxx on it. "Have I got a mystery for ever. If you are doing an engine rebuild, engine upgrades, or maybe just trying to find your engine running issues, ECM testing is one way to help diagnose your issues . Aug 19, 2009 · No it is not possible, you can use the system and the harness, but the knock sensor must be for the 5. When an ECM starts to go bad, it can cause all sorts of problems. Electronic Control Modules (ECM) Sterndrives. The TKS ECM electronically opens the enrichment valve for varying lengths of time – the colder the engine, the longer the valve remains open. Symptoms Engine sputtering or hesitating during acceleration About the marine Motorola Mercruiser ECM. The Mercruiser 8M6005749 ECM is the main computer for various Mercury outboard motors, including the 250 HP DTS, 250 HP FourStroke, and 250 HP ProXS. This is a repair service for a 2005 - 2006 Mercury Mariner PCM with a 3. (32 mm) mounting screws 4 Use with 5/8 in. of W9010VI1 and manufacture date of 08-10-2004 because it would not be compatible. Regularly replace fuel filters according to the manufacturer’s recommendations. We first diagnose the unit; if it’s not repairable or no problems are found, it costs $200. Clean/rebuild carburetor, replace spark plugs and wires, check fuel pump and filter, check ignition system. Jun 2, 2007 · "Here is the problem. I traced the wiring all the way back to the ECM (J-14)and it was good. 0L MPI Engine. Delco style ignition systems use the ECM. Part Options. May 4, 2023 · Problem 1: 3. Rough idling. I have been having problems at idle and have spent a large chunk of money trying to figure it out. 5,310. Aug 18, 2015 · this fault mode occurs, the Guardian strategy will limit throttle to 65% of available power. 7 efi Ignition problems? Is that EFI a throttle body, or MPI? Makes a big difference in troubleshooting. 1 Failed Self Diagnostic Cycle. 2L MPI INBOARD EC - 5. 1. Jan 28, 2012 · Jan 28, 2012. If you do not see your particular vehicle listed, please call us at 800-547-2049 to discuss repairing your module. Compression test Good Fuel pressure test good Scanned with diacom no codes all parameters in the game new plugs cap and rotor Replaced the exhaust water shutters Cleaned all debris from exhaust. The part I need exactly is a MEFI 3 Delphi ECM model number 16237009 but a member on these forums has told me that he has a MEFI 3 Delphi ECM but its model number is 16236999. The TKS ECM also advances igni-tion timing – Below 3,000 RPM the TKS ECM advances idle timing 5° until the engine reaches 104°F (40°C). 0 Mercruiser Carburetor Problems. Temperature, oil pressure, and everything else looks fine according to both the gauges, and the SmartCraft monitor. My ECM is a MEFI-4 with a different part number. Sticky means that the fault, once set, will continue to show up as active, even if the circuit or problem has corrected itself. In the part list two options are available: 864273T07 – ECM Engine Control Module. This may be . 2 inline 6 sylinder engine got nothing to do with BMW. Twin Mercury Marine marinized 7. Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship. I have swapped parts from the other engine and have also bought a new Quicksilver IAC and TPS and have taken the throttle body off and cleaned it and replaced with new gasket. All sensors are normal. 5. If you have confirmed spark on all plugs, you have fuel pressure and compression, it should fire I would think. Product Details. Problem is it cuts out for no apparent reason. Diacom Marine unlocks the computing power of your notebook PC 1992 - Up EFI engines: 1992 - 2006 (GM MEFI equipped) Adapter #94005 2007 - 2009 (ECM-07 equipped) Adapter #94026 2008 - Up (ECM-08 equipped) Adapter #94023 or 94029 Seven Marine. After testing, I was told by my mechanic that I need a new ECM (motor is a MCM 5. After a short period of use the tacometer needle will oscillate wildly usually between 4500 & 5000 revs although I normally run the engine at cruising about 3800 - 3900. My IAC follower is up on the counts almost double 80+ average @ idle. Nov 21, 2022 · When it comes to operating a boat, one of the most frustrating and difficult components to troubleshoot is the Engine Control Module, or ECM. Crate Engines - Ramjet 502, Ramjet 350, LT1, LS1, LS2, LS6, LS7, Ecotec. After watching the Smack resetting the ECM and getting a huge increase in mpg, I started looking up how to reset the ECM. 1) I can run the engine at 1800rpm for two hours (did it) with no alarm. We are so confident in our rebuild service and Mar 28, 2019 · Hey folks, my FIL's marine mechanic has informed him that the problem with his mercruiser is the ECM. Also known as the Engine Control Unit, or ECU, the ECM monitors your engine to ensure optimal performance. Just repowered with a 2020 Mercruiser 383 MPI and am having performance / excessive fuel burn problems. Messages. Current timing measurements indicate a change from 26 deg at 2500 RPM down to 14 deg at 3600 RPM. Contents. Mercury Verado 225 ECM PCM 88924689T, 8M0021687. 0 (or nearly 5) volt signal and a "CKT LO" fault means that the ECM/PCM is seeing a 0. I dont think you should have anny problems with that engine in this type of boat. Re: Mercruiser 5. CodeMate User Guide. May 9, 2018 · I sold the original 5. « Previous. Overheating Problem. This Part has options, please click the button below to order. Ask Your Own Boat Question. The first number, labeled a SPN, identifies the location of the problem and the second number, a FMI, identifies the type of problem is occuring at the location. (800)737-0915. I'm keen to get it repaired or buy one second hand. Aug 5, 2019 · To ECM Term. Diagnose your over 130 of heavy equipment with diagnostic software for engines, excavators, dozers, skid steers & more. Web Store / Online Ordering. Repairs generally range between $100 and $600 vs a replacement for $2000 to $3000. Malfunctioning thermostat, blocked/damaged water pump, insufficient coolant. I swapped side to side and the problem moved. First is a coolant level sensor that is responsible for illuminating the low coolant light on the dash when coolant levels are low. Clean/rebuild carburetor, adjust idle speed and mixture, check for vacuum leaks. Mar 30, 2009 · Mar 30, 2009. Disconnect the battery to prevent any electrical mishaps during the replacement process. I believe the ECM controller is at fault. ) engine coolant temp overheat, 2. 7/6. Apr 28, 2019 · 2000 Mercruiser 7. It controls the motor’s significant systems, including the engine, ignition, fuel injection, and charging system. if the ICM goes bad, it simply stops working and the engine quits running. He replaced my original ecm (delco model 16234539) with another he had in his shop (delco model 16189069) just to have it in the water Disclaimer: This chart applies to MerCruiser engines with PCM 555, including 496 MAG and 8. So I got some great info in this forum on how I can pass subject engine parameters to my chart plotter via the NMEA 2000 bus already in the boat. The LT1 engine has three different coolant sensors. Do not replace your ECM unless you are SURE that Mar 28, 2019 · Hey folks, my FIL's marine mechanic has informed him that the problem with his mercruiser is the ECM. Maybe some of you will find it useful. This is a repair & return for your Mercury Mariner ECM ECU PCM. Re: 4. Below are the facts of the case as I can best tell-. Mar 9, 2023 · It cranks but the engine does not start. Mercury v8 pro xs. me vb dt ey qn gd hy nn rd dc