cars having a bad ecu. I am not getting a code. I did all the usual maintenance, both primary o2s, spark plugs, fuel filter, cam angle sensor and checked for continuity from each coil plug to the plug at the ecu and all came out ok. I am not getting a spark on 3 or 4 of my cylinders and I used a "known" good coil pack to check for spark on each cylinder and did not get spark on a 3 of them. Does the activation relays on the ecu board go bad in our cars?

96
5spd
162k miles

thankx chris

 

I had mine replaced a few months ago for free thankfully.. would have cost $1600 from the dealer

 

my old ecm had moisture on the bottom of it so it was corroded, i had a ton of codes when i had the told one. i replaced it and now i dont have any codes.

 

so ecus do go bad...btw how did you get that ecu replaced by the dealer for free? especially if your car is a 97...


thankx for the input guys