89 iroc shaking in drive, neutral, and chirp on acceleration
Thread Starter
Junior Member
Joined: Jul 2011
Posts: 14
Likes: 0
From: Kentucky
Car: 1989 Camro Iroc
Engine: 5.7 tpi
Transmission: 700r4
Axle/Gears: 2.77 BW
89 iroc shaking in drive, neutral, and chirp on acceleration
I was driving down the road at about 45 mph and I noticed the car was shaking and I was hearing a chirp sound from the engine area while hitting the gas. When I came to a red light I could really feel the car shaking and when I hit the gas I could hear this chirp sound coming from the front engine area. The sound continues while you accelerate
I pulled into a parking lot and popped the hood. You could see the the hood shaking while it was raised up. Car shakes while in neutral or park and also in drive. The chirp sound starts as soon as you hit the gas in drive.
The engine also isnt holding a steady idle but instead its SLIGHTLY up and down.
Again the shaking started as I was driving and does NOT go away when not moving.
Car seems to still have good power.
Any ideas please? maybe a motor mount? torque converter? flex plate? suspension breakage?
I pulled into a parking lot and popped the hood. You could see the the hood shaking while it was raised up. Car shakes while in neutral or park and also in drive. The chirp sound starts as soon as you hit the gas in drive.
The engine also isnt holding a steady idle but instead its SLIGHTLY up and down.
Again the shaking started as I was driving and does NOT go away when not moving.
Car seems to still have good power.
Any ideas please? maybe a motor mount? torque converter? flex plate? suspension breakage?
Last edited by bluegrass; Dec 1, 2011 at 06:01 PM.
Joined: Oct 2001
Posts: 12,223
Likes: 1,148
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: 89 iroc shaking in drive, neutral, and chirp on acceleration
I was driving down the road at about 45 mph and I noticed the car was shaking and I was hearing a chirp sound from the engine area while hitting the gas. When I came to a red light I could really feel the car shaking and when I hit the gas I could hear this chirp sound coming from the front engine area. The sound continues while you accelerate
I pulled into a parking lot and popped the hood. You could see the the hood shaking while it was raised up. Car shakes while in neutral or park and also in drive. The chirp sound starts as soon as you hit the gas in drive.
The engine also isnt holding a steady idle but instead its SLIGHTLY up and down.
Again the shaking started as I was driving and does NOT go away when not moving.
Car seems to still have good power.
Any ideas please? maybe a motor mount? torque converter? flex plate? suspension breakage?
I pulled into a parking lot and popped the hood. You could see the the hood shaking while it was raised up. Car shakes while in neutral or park and also in drive. The chirp sound starts as soon as you hit the gas in drive.
The engine also isnt holding a steady idle but instead its SLIGHTLY up and down.
Again the shaking started as I was driving and does NOT go away when not moving.
Car seems to still have good power.
Any ideas please? maybe a motor mount? torque converter? flex plate? suspension breakage?
Senior Member
iTrader: (3)
Joined: Aug 2008
Posts: 614
Likes: 0
From: Memphis, TN
Car: 1992 z28 Purple Haze
Engine: 5.7L Tuned Port Injection
Transmission: 700R4
Axle/Gears: 3.23 both spinning
Re: 89 iroc shaking in drive, neutral, and chirp on acceleration
Possible broken motor mount.
Junior Member
Joined: Dec 2011
Posts: 27
Likes: 0
From: Newfoundland
Car: 84 Trans Am
Engine: 305 for now
Transmission: 5spd
Re: 89 iroc shaking in drive, neutral, and chirp on acceleration
It may be a vacuum leak, if you have one, use a vacuum gauge, should be showing about 20 to 21 in-mg at idle, any lower then that shows a possible leak.
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