Ecm
 

first time on forum. 1995 cabrio, no spark. I have read many,many threads on this topic. My question is- If no CEL when key turned on, does that mean my ECM is bad.

New coil,CPS. Have power to ecm, coil, fuel pump. Timing confirmed at belt and distributor. I new about issues when I bought the car ($400 and in excellent shape). I am not in hurry, but have not seen a concrete answer about the ECM question.

Lastly, If different ecm is needed, do the numbers have to be the same? Mine is a 258H, I have not found that number on any parts list I have seen. Will an ECM with the same number, but ending in AH work?

thanks very much

Welcome to the forum. Attachment 2413

The CEL and other warning lights should do a self test when you turn the ignition on.

You need to get your motor scanned (preferably with VAG-COM\VCDS) for any error codes logged in the ecu and post them, that will save a lot of guessing.

You will need another ecu with the same part number if you need to replace it.



https://volkswagenforum.com/forum/ne...gnature-34185/