Car idles rough in drive, but not nuetral or Park, why?
Thread Starter
Supreme Member
Joined: Jan 2003
Posts: 2,043
Likes: 3
From: San Diego
Car: 1994 Trans Am
Engine: LT1
Transmission: Auto
Axle/Gears: 3.23
Car idles rough in drive, but not nuetral or Park, why?
The Tranny shifts fine and the mount was replaced a couple months ago so that can't be it. Any ideas?
Joined: Jun 2005
Posts: 813
Likes: 0
From: Adrian, Mi
Car: 1989 Camaro
Engine: 350 but it's torn down right now.
Transmission: 700r4
Axle/Gears: I'm working on it,lol.
A couple of questions to help me figure out where you're at.
1. Is the S.E.S. light coming on to indicate a stored trouble code?
2. Have you checked the motor mounts?
3. When was the last time your car got a tune-up?
4. Have you checked for vacuum leaks?
1. Is the S.E.S. light coming on to indicate a stored trouble code?
2. Have you checked the motor mounts?
3. When was the last time your car got a tune-up?
4. Have you checked for vacuum leaks?
Thread Starter
Supreme Member
Joined: Jan 2003
Posts: 2,043
Likes: 3
From: San Diego
Car: 1994 Trans Am
Engine: LT1
Transmission: Auto
Axle/Gears: 3.23
Also, when I shift into any drive gear or Reverse there is a chunking feeling. Idle is more like a grinding sound with some vibrations, not horrible, but definately noticeable vibrations.
1) no ses lights
2) haven't yet
3) before I bought it in January
4) checked, found none.
1) no ses lights
2) haven't yet
3) before I bought it in January
4) checked, found none.
Joined: Jun 2005
Posts: 813
Likes: 0
From: Adrian, Mi
Car: 1989 Camaro
Engine: 350 but it's torn down right now.
Transmission: 700r4
Axle/Gears: I'm working on it,lol.
Check the motor mounts and universal joints on the driveshaft and let me know what you find out.
Thread Starter
Supreme Member
Joined: Jan 2003
Posts: 2,043
Likes: 3
From: San Diego
Car: 1994 Trans Am
Engine: LT1
Transmission: Auto
Axle/Gears: 3.23
Re: Car idles rough in drive, but not nuetral or Park, why?
and trans mount... you'll probably have to take the mounting plate off to really inspect the transmission mount.
Originally posted by BigWhiteGTP
The Tranny shifts fine and the mount was replaced a couple months ago so that can't be it. Any ideas?
The Tranny shifts fine and the mount was replaced a couple months ago so that can't be it. Any ideas?
Iroczracer07, I will check those things. And I might change the tranny fluid.
Thanks.
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