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can a bad icm cause this ?


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Guest Gp crazy
Posted

Well after the whole coil thing i noiced the tach was out of wack .

it jumps form 1100 to 5000 but the engine is not even close to it.

thiis only happend once and on a cold start but hot starts it is fine.

also it seams to miss at idle when cold but hot it seams fine ?

Posted

I'm not sure if that can be caused by a bad ICM or not, but if you take your ICM to NAPA they'll test it for free.

Guest Gp crazy
Posted

if they can test it for free. can i test my self ?

what to they need to test it with ?

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