84wagoneer

when my truck idles in park, it vibrates. so that would point to the motor mounts/trans mount being bad. but when it revvs to about 2800 or so and up it starts vibrating bad, and when im driving down the highway at about 3000 and up, the vibrations pulsate, and the more throttle im giving it, the faster the pulsations are. if i let off the throttle it is a steady vibration as the rpms drop. could the motor mounts or trans mount cause it to do this? or could my automatic transmission be going bad? or could my Computer Controlled Carburetor be screwing with things? help me please

84wagoneer

bump

trapper

sounds like it could be an electrical/cylinder misfire? And the mounts could be warn.. making the problem more pronounced..?? or a sensor could be going bad.. really Im not leaning to a mount as the base issue.. wish I could be there to run it through its paces..

good luck

84wagoneer

is there any way i can bypass the computer controls and run a traditional carburetor setup? theres no way i can check the CEL because the PO unhooked it, and i tried to check out the wiring, and its just a big nightmare of existing and added wiring under the dash

84wagoneer

update to my problem. when the vibration surges or pulsates, the truck is trying to accelerate a little bit. so it must be either the carb, or the computer