Running Rich Update

[HFXJACK]

From a previous thread I have a 1999 7.4 MPI. I replaced the engine with Reman long block from Michigan Motorz. Since the install the engine is running very rich at idle. At all other speeds it appears to be running normally. We have tested and tried everything possible. Leaving only replacing the ECM as the option. We placed an order for a new ECM from Mercury July 4th and are still waiting for a ship date. We keep getting a revised ship date at the expiration of current ship date. It's like pulling teeth talking to Mercury which is most unfortunate and certainly will influence any future engine selections. There customer service sucks. What little info I did get is that these ECM'S are not new units but core returns. I sent my ECM back to get flashed but it will not accept the flash. Loads to 65% and crashes whick kind of supports that I have a bad ECM.

My Question apparently my ECM package is obsolete and no longer supported, Is there a upgrade path option for me. Can I replace my existing ECM package to one of current generation?


Thanks John

 

[Bondo]

Re: Running Rich Update

From a previous thread I have a 1999 7.4 MPI. I replaced the engine with Reman long block from Michigan Motorz. Since the install the engine is running very rich at idle. At all other speeds it appears to be running normally. We have tested and tried everything possible. Leaving only replacing the ECM as the option. We placed an order for a new ECM from Mercury July 4th and are still waiting for a ship date. We keep getting a revised ship date at the expiration of current ship date. It's like pulling teeth talking to Mercury which is most unfortunate and certainly will influence any future engine selections. There customer service sucks. What little info I did get is that these ECM'S are not new units but core returns. I sent my ECM back to get flashed but it will not accept the flash. Loads to 65% and crashes whick kind of supports that I have a bad ECM.

My Question apparently my ECM package is obsolete and no longer supported, Is there a upgrade path option for me. Can I replace my existing ECM package to one of current generation?


Thanks John

Donno, but here's a bump to the top...

 

[Stamey]

Re: Running Rich Update

Have you looked for alternate entities that can flash your ECM? I know that there are several "aftermarket" places that do this for truck and car ECMs. Not that they enhance the programming, necessarily, but they can flash ECMs although they are not an OEM. Google may be of help here.

Chris

 

[HFXJACK]

Re: Running Rich Update

Actually I sent mine back to get flashed. It would crash at 65%.