i have DS.and it keeps giving me 3 codes.(24)VSS,(42)EST monitor failure,and (55)ECM analog/digital convertor failure.these can be caused by a bad ECM.i also cant get my TPS and IAC set right.i set them both perfect and check them the next day.and there out of wack.someone also told me it could be a bad ground in the back of the cylinder head.any ideas?
You are on the right track. Mulitple codes are generally caused by bad grounds or a bad ECM. Check both grounds on back of cylinder head. I can send more info direct if you want.