What causes loud clunk sound after taking off in 1st gear

Asked by May 12, 2013 at 09:53 PM about the 2003 Jeep Liberty Sport 4WD

Question type: Maintenance & Repair

After accelerating from a 'complete stop'. once the vehicle starts moving, a loud knock is
felt and heard, from transmission or transfer case?

4 Answers

sounds like a manual transmission which takes a measure of 80W-90 hypoid gear oil as I recall, but could be standard automatic oil, seen 'em that way too....which if is low or hasn't been serviced or changed since the dawn of time would recommend a transmission service....also on a whim take a look at the engine and transmission mounts~ they might be torn~

2 of 2 people found this helpful.
25

it could be the transmission mount is loose, i had a 1995 camaro that a mount bolt came loose, and when i took off it would jump a little after it caught. i would check that first.

25

how about those u-joints just had to change one myself.

did you put fresh "french locks" on the hex nuts?

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