Engine noisy! Any ideas?
Thread Starter
Junior Member
Joined: Aug 2004
Posts: 78
Likes: 0
From: Orange County, CA
Car: 89 Trans AM GTA
Engine: 5.7L
Engine noisy! Any ideas?
Ok,
I have a 89 GTA 5.7 61k on the odometer.
I bought it from the original owner and noticed when I go up a hill with the gas pedal to the floor or take off from a light with the gas pedal to the floor, I get the wonderful growl and then at about 30-40 mph I get a crackling sound from the motor. It goes away after about 2 or 3 seconds.
I just had a complete tune-up Plugs, wires, etc. Car runs better but this cracklin sound is still there. Any ideas?? Keep in mind, if it makes any difference, the plugs, cap & wires that were that were replaced were original equipment.
Please help!!
I have a 89 GTA 5.7 61k on the odometer.
I bought it from the original owner and noticed when I go up a hill with the gas pedal to the floor or take off from a light with the gas pedal to the floor, I get the wonderful growl and then at about 30-40 mph I get a crackling sound from the motor. It goes away after about 2 or 3 seconds.
I just had a complete tune-up Plugs, wires, etc. Car runs better but this cracklin sound is still there. Any ideas?? Keep in mind, if it makes any difference, the plugs, cap & wires that were that were replaced were original equipment.
Please help!!
Supreme Member
Joined: Sep 2001
Posts: 6,111
Likes: 53
From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Catylitic converter heat shield rattleing? or Engine detonation (pinging)?
Supreme Member
Joined: Feb 2005
Posts: 1,034
Likes: 0
From: Fort Lauderdale, FL
Car: 91 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 2.73 Posi w/Disc
I'm gonna take a random guess, so I could be wrong...
The noise only occurs when the drivetrain is under the greatest strain. Maybe somehow the U-joints are worn out, but only make noise when the rear end geometry changes just right...
The noise only occurs when the drivetrain is under the greatest strain. Maybe somehow the U-joints are worn out, but only make noise when the rear end geometry changes just right...
Thread Starter
Junior Member
Joined: Aug 2004
Posts: 78
Likes: 0
From: Orange County, CA
Car: 89 Trans AM GTA
Engine: 5.7L
Originally posted by F-BIRD'88
Catylitic converter heat shield rattleing? or Engine detonation (pinging)?
Catylitic converter heat shield rattleing? or Engine detonation (pinging)?
Supreme Member
Joined: Sep 2001
Posts: 6,111
Likes: 53
From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Lean air fuel ratio.(clogged injectors, low fuel pressure.... or excessive ignition advance.
At what rpm (range) does it ping?
At what rpm (range) does it ping?
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Thread Starter
Junior Member
Joined: Aug 2004
Posts: 78
Likes: 0
From: Orange County, CA
Car: 89 Trans AM GTA
Engine: 5.7L
Originally posted by F-BIRD'88
Lean air fuel ratio.(clogged injectors, low fuel pressure.... or excessive ignition advance.
At what rpm (range) does it ping?
Lean air fuel ratio.(clogged injectors, low fuel pressure.... or excessive ignition advance.
At what rpm (range) does it ping?
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NinjaNife
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Aug 23, 2015 11:49 AM
