jon4825

iTrader: (1)

I searched the forum for jerking or bucking during deceleration and the results are all over the place.

Can someone help me put together a plan on how to trouble the issue?

While decelerating in gear at both low and highspeeds the rear end starts to jerk and buck. It does not stop until I either accelrate or put the clutch it. It happens when I am at 65 mph and braking.

My search results stated it could be TPS, Dashpot, Differential Mount, etc.

I definitely feels like a drivetrain issue like the rear end or transmission needs to be braced to keep it from jerking back and forth. I am really posing the question because I dont understand how a TPS or Dashpot could cause this issue.

Thanks for the help in advance,

Jon

Banzai-Racing

iTrader: (11)

You have a microtech, do you have the decel fuel cut set up?

t2ae

iTrader: (5)

tps could easily cause all types of bucking and jerking. just be sure its in spec

jon4825

iTrader: (1)

Thanks for the microtech advise on the decel fuel setup. I will also search on how to diagnose a TPS. Car is in the body shop so I will post update in a couple days.

jkstill

iTrader: (11)

+1 - Adjusting the TPS 100% fixed that issue in my FD.

IRPerformance

iTrader: (41)

Diff bushings, motor mounts, pillow *****. As said above, check your deccel fuel cut too. Should be below 1400 in most cases.

Banzai-Racing

iTrader: (11)

Microtech is a vacuum set point actuated decel fuel cut.