Kick on acceleration (broken mount?)
07-25-2005, 06:59 PM
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Car: 1989 Red T-Top Firebird, 1989 Iroc
Engine: 2.8L 173 C.I., 355
Transmission: Th700r4 Auto, Built TH700R4
Kick on acceleration (broken mount?)
well I have had a problem as a result of a stupid mistake.... it was a neutral drop from higher rpms. 4k or so. accidently pulled it into drive and ever since it kicks hard and makes a loud thud under heavy acceleration from a stop or slow cruise. and I also feel it in the shift from 1-2. I origionally thought it was a slipping tranny, but now the thought is a broken mount of some sort. either motor or tranny... any help would be appriciated.
07-26-2005, 01:15 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Crawl underneath and check the transmission mount. If broken, replace with a poly unit.
07-26-2005, 04:49 PM
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Car: 1989 Red T-Top Firebird, 1989 Iroc
Engine: 2.8L 173 C.I., 355
Transmission: Th700r4 Auto, Built TH700R4
yeah it was the tranny mount I just didn't get a chance to update, the tech article says the poly one isn't quite to spec. and it could cause problems but is it any thing to worry about?
07-26-2005, 05:45 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Didn't cause me any problems. I've heard of some weirdness with V6 mounts, but I don't know any specifics.
07-26-2005, 06:39 PM
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Car: 1989 Red T-Top Firebird, 1989 Iroc
Engine: 2.8L 173 C.I., 355
Transmission: Th700r4 Auto, Built TH700R4
Interesting, well i don't know anything aboutit eally, the person who wrote the tech article said it could cause problems but eh i will try it
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