''Thumping'' into gear??
Thread Starter
Junior Member
Joined: Aug 2014
Posts: 22
Likes: 0
Car: 1988 Camaro IROC-Z convertible
''Thumping'' into gear??
I've got an '88 IROC convertible, when driving the car shifts smoothly through gears, but when when shifting car initially (into Drive, Reverse, Neutral etc) the car thumps/lurches into the gear about 1-2 seconds after I move the shifter into the gear. Any thoughts why this is happening? Thanks.
Senior Member
Joined: Mar 2011
Posts: 578
Likes: 1
From: Colorado Springs
Car: 91 firebird Formula 350
Engine: 350 TPI
Transmission: N/A, working on a t5 swap
Axle/Gears: 3.73 posi
Re: ''Thumping'' into gear??
Check your transmission mount. Extremely common symptom of a bad mount
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 10
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: ''Thumping'' into gear??
You have to place a board large enough under the transmission oil pan so the jack wont punch threw and jack it up just enough to see if the transmission mount is damaged.
The rubber will separate from the metal plate its supposed to be mounted to.
Just looking at it from the side will not work.
The rubber will separate from the metal plate its supposed to be mounted to.
Just looking at it from the side will not work.
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