Car shakes at idle
Thread Starter
On The Tree
Joined: May 2008
Posts: 176
Likes: 0
From: Dunedin, FL
Car shakes at idle Hey guys, when my car is at idle it seems to shake a little like the idle is rough. The car is an 01 SS with 60,000. Car has been seafoamed, MAF cleaned, new plugs, wires, pcv, fuel filter etc all within the past 4 months. I noticed the oil pressure gauge "twitches" a little at idle. The tach is steady though. The car runs excellent and I have no warning lights on. Any of your cars idle like this? Any idea what could be making it shake?
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Verdad Gallardo Thread Starter
On The Tree
Joined: May 2008
Posts: 176
Likes: 0
From: Dunedin, FL
Thanks guys. Makes me feel better. I was in my buddys 04 Blazer yesterday and it was doing the same thing. Maybe its a GM thing. Can you spray throttle body cleaner in the TB while its still on the motor?
Mine does the same thing. I replaced the o2 sensors (front only) and it stopped. 6 months later, it is doing it again. This is my second f-body and they've both done this. Just consider it a built in massage chair. 
can you also feel a "thumping" thru the brake pedal when you push it at a dead stop? if so, i have the same issue, and my 01 tahoe does it as well. Must be a GM thing then...
TECH Senior Member
Joined: Jan 2004
Posts: 5,798
Likes: 16
From: St.Charles MO
Its from the exhaust.
I've noticed Fbodies with stock (non SLP) exhaust do not shake at all, while after any kind of exhaust mods the car will be shaky a little. This is not limited to GMs either, I've been in various others cars with aftermarket exhaust and they all shake at idle because of it.
I've noticed Fbodies with stock (non SLP) exhaust do not shake at all, while after any kind of exhaust mods the car will be shaky a little. This is not limited to GMs either, I've been in various others cars with aftermarket exhaust and they all shake at idle because of it.
Hey guys, when my car is at idle it seems to shake a little like the idle is rough. The car is an 01 SS with 60,000. Car has been seafoamed, MAF cleaned, new plugs, wires, pcv, fuel filter etc all within the past 4 months. I noticed the oil pressure gauge "twitches" a little at idle. The tach is steady though. The car runs excellent and I have no warning lights on. Any of your cars idle like this? Any idea what could be making it shake?
Teching In
Joined: Dec 2008
Posts: 17
Likes: 0
From: Louisiana
I felt the thumping in my brake also with a rough idle. My flywheel was cracked and warped, and my motor mounts were collapsed. I replaced the fw and mm and that fixed the thumping and vibration.
Last edited by IRONHEAD53; Dec 31, 2008 at 12:19 AM. Reason: typo
