ctgreddy

for the most part, when i'm just cruising, if i let all the way off the gas, my car will kinda jerk or buck whatever you wanna call it. it does this a couple times, then stops. and it only happens sometimes. sometimes its worse then others. it seems like its coming from either the trans or rear end. i know my trans is already on its way out? could this be it? also, i've got some elcheapo lmr control arms on the back, think they're just crap? i got them for free so i can't really get pissed if thats the problem.
and it did this before and after i redid my rear end. i'm just now getting fed up with it, lol.

94ford5liter

The cheaper control arms can cause a binding similar to what you are describing. The more expensive ones are non-binding. In my old car I had a binding similar to that with my bbk control arms. Could also be your rear end locking up, but if it is new I doubt that.

Slo5oh

exessive pinion play?

ctgreddy

pinion play? like the rear pinion? i couldn't see that. this happened both before and after i went thru the rear end. its happened since i've replaced the c/a's, but that was also when i put my motor in so i wasn't sure if it was the trans going. would it be the uppers causing this? they looked pretty weak, i was almost afraid of putting them on.

50enzo

i thot i had a similar problem, cuz my car was bucking like a bronco...and it was the module on the side of the dist!! $15 part. diagnose it right.

ctgreddy

all my ignition parts are new. but you can feel that its not the motor. feels like its coming from either under you or behind you.

86whitepony

is your car a carb? if so it might be bucking because the timing is too high

ctgreddy

not a carb. efi. timing is set at the stock setting 10*

Slo5oh

is it an engine buck?

it sounds like your describing a driveline buck. Is it an auto, if so it may be a lockup issue.

84conversion50

i demand to know where you get the tfi for 15$