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11
votes
0answers
226 views

Vibration at idle, much worse after warm

My car is a 2001 Pontiac Firebird with a V6 (3800 Series II (L36)) and a manual transmission. These are all at a stop: When the car is cold, I don't feel too much vibration when sitting in it. (I ...
6
votes
0answers
27 views

Vibration felt, heard and seen when in Drive at stop but disappears when shifted to Neutral

2010 Jeep Patriot FD2 4x4 38,000 miles Well maintained vehicle with low mileage. Excessive vibration noticed beginning 6 months ago. Have changed spark plugs, air filter, Premium gas used with double ...
5
votes
0answers
30 views

1987 Dodge D150 High Idle and Dieseling

Truck is the high altitude/California emissions model, 318. Carburetor has been replaced with a 4 barrel Holley 4160 I believe, although it might be a 4150, intake manifold was replaced to fit the ...
5
votes
0answers
44 views

Idle drop in 1991 Buick Park Avenue

I have a 91 Buick park Ave that is experiencing these symptoms. When starting from a cold start the engine will turn over, reach around 1000 rpm, then die. When applying gas and turning the key the ...
4
votes
0answers
123 views

Engine Running Fast in Park

Never had this issue before but I just started my vehicle and the tac automatically revved up to 1500 rpm when I cranked it. It didn't go back down while in park, it basically idled at about 500 rmp ...