hey guys, got an issue with the 94 lt1... im trying to figure out why the motor shakes like hell. its does it slightly at cold and when warm it goes to shaking enough so i can feel it in the drivers seat, the things iv done are a complete exhaust system, intake gasket, accel dist, new wires new plugs like 3 sets of them, coil, icm, complete egr system, tps, map, i have never had any codes,but it does work. new fuel pump, good pressures, regulartor, the car runs great at wot no miss fire all the way up to 130 i have a scanner still learning what everything means. i know all the electronics are within the book. any i deas would be great

 

could be an idle air sensor or MAF issue if its just a non WOT problem. Try unplugging the MAF and running the car.

 

yeah i tried that just kills the car, i know all the electronics work fine the numbers on all of them are the same as the book

 

i also had pcm for less reprogramed the computer a month ago

 

got an up date finaly got dark out and i see every dame spark plug arching at cylinder head, what would cause that its not glowing already went thou that with msd today, i grounded the heads to the bat and still the same the wires are 1 month old the opti was replaced a month and half ago i took the new coil off my drag truck and still same thing, has anyone run in to this

 

yea the wire are bad or not fully on

 

yeah i checked that too they all snaped on with no prob. so far i used the taylor wires had probs then went back to ac delco there boots are shorter than taylors thou, im about ready to yank out all my msd stuff i just put a set of auto lights 104 back in msd told me to they say the platnuims foul out there right i tried ac oem boch, ngk ur and they all went bad after 2000 miles, i did have somthing weired happen on the scanner today it tried to go into open loop while driving intown. no probs on interstate fuel trim at 128L and 129R longterm dont know what to do been to many auto shops and no one can figure it out.