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One at a time and test the ignition.

2 Bravo ) and works fine we check all wiring on my motor and is fine ( i have twins. Ho.

The engine was designed to run on 87 octane.

Since last June (off and on) I have been working on a 39 performance cruiser with twin Mercruiser 496HO / PCM555 engines.

The engine started and run fine at dock. Mar 26, 2017 · 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. You DO NOT have a problem that reprogramming will cure.

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2 Bravo ) and works fine we check all wiring on my motor and is fine ( i have twins. Page 121: Engine Runs Rough,. 2000 Mercruiser 7.

Because of that, the ECM thinks there is a problem with the knock sensor circuit, and sets a false DTC 44. EXAMPLE OF ECM FAILURE – MEFI 3.

One at a time and test the ignition.

A bad.

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. .

Did you mess with the. Oct 21, 2004 · I have a 1995 Mercruiser 7.

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No Programming Required.
Page 121: Engine Runs Rough,.

Have you modified your stock Mercury EFI engine by adding high performance exhaust, a bigger cam, a high flow flame arrestor, oradded a supercharger?.

After trying to fix a lot of things - Checked and changed the fuel/water separator.

Dec 23, 2020 · I have a 7. 2 horizon bravo FWC, the ECM i got is from a 2005 6. Did you mess with the.

455. 5) Insert the half paper clip into terminals A and B – This puts the engine in “Service Mode” and codes will begin to flash on the LED. Spark600 Well-Known Member. . If you do not see your particular vehicle listed, please.

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4L MPI MEFI-3 ECM. 7 just the ecm need to be changed.

Printed in U.

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This may.

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4L MPI MEFI-3 ECM.