94' 2.3 runs rich, Code 224 coil circuit failure??

[creyc]

I have a code 224 "coil 1,2,3 or 4 circuit failure". I'm not sure how to go about fixing this, I put in new coils and got the same error code.

It's the 2.3 EFI with twin plugs per cylinder. It runs and always starts, but it runs rich and I want to figure out the problem.

I heard replacing the ICM fixed this problem for one guy? Can anyone explain this to me so I can try to fix it.

 

[BobbyB2300]

Ok, here's what you do. Before spending $150+ on an ignition control module, take the existing module out and clean it up.

Remove the negative ground from the battery and remove the module. Sand the manifold mount clean and clean the back plate of the ICM. You want to be able to eat off it. Clean the bolts too, the ground is critical here. Get a dollar tube of dielectric grease at the auto parts store and spread a thin coat about the size of a silver dollar on the back center of the ICM. Remount the ICM and make sure the bolts tightend firmly. Report back, this is a nasty code for a lot of people, be nice to hear a success story.

 

[feellnfroggy]

I searched and have been reading up on probs like these cuz I cant find any answers for my 92 which has no power whatsoever when the pedaled is pushed. And the onyl way it accelerates is w.o.t. and even then it does so slowly. My question is what is ICM?

 

[Joelzme]

ICM is the ignition control module and is responsible for getting timing information from the computer and generating the spark information to send to the coil packs to generate a spark (replaces the distributor).

The ICM will be on the lower intake manifold and will have to connectors, one on top and one on the bottom. You can take this to autozone to have it tested and they can tell you if it needs replacing.

As for running rich are you getting codes? The ICM does not control air/fuel mixture so that might be a separate problem. I have had similar problems.

 

[Joelzme]

One other suggestion, if it is bad you might want to go with OEM and not autozone replacement. From what I hear this is one part that motorcraft is a better replacement, but that is only what I have heard. I have had to replace it twice.