Tranny noise

isuzu
trooper

#1

intermittent noise/vibration when tranny shifts to 3rd or OD. Can be at 1500 to 2500 rpm. only on upshift not downshift. can feel it, depending on acceleration between 45 and 60 mph. tranny completely rebuilt before we bought vehicle 1-1/2 yr ago


#2

Get under or get the vehicle u p and check for an installation error that has just now diplayed its self (something loose) pull out the reciept for the transmission work (you did get a copy of the reciept?) and post back what parts were replaced, plus any comments. What yesr Tropper, perhaps a bulletin scan is called for.


#3

What kind of noise is it? As oldschool said it should be inspected for anything loose or broken such as a mount.

But the other thing that comes to mind is torque converter clutch (TCC) lockup shudder. How many miles have gone on it in the last 1.5 yrs? Has it been serviced? (Pan & filter every 30K is best.


#4

yes, has been serviced. does act like lockup shudder. about 20k since bought it. other comments i’ve had are lockup solenoid failure, and some kind of shift sensor mounted on the engine throttle body, along with throttle cable failure. has some linkages hooked up to it.