bad ecu

[FSTMN]

hey guys I've been chaseing this misfire problum for 2 mounths now. I first had the codes pulled and got a 605 so bought a used pcm had it flashed then had to put a chip in it to turn pats off now its starting to do the same thing the old ecu did it misfires at idle I can feel it shake and you can see it shake.The car feels strong accross the board and has no hesitation on throttle if this ecu is bad what colud be killing them .Thanks for any help in advance this is driving me crazy and I guess i'll have codes pulled on this one and is it possible the driveabity issuses got downloaded from one pcm to another .

 

[TweekedGT]

Maybe you have a bad ground somewhere. Could be frying your ecu and causing th misfires.

 

[FSTMN]

I thought about that to where should I start looking?

 

[TweekedGT]

That's the problem, there are a million different grounds on our cars. The easiest way is to start with all of the little green bolts under your hood. The green bolts means that they are grounds for something. Make sure they all have something attached to them. It's as good a place as any to start.