I have a 1999 chevy lumina 3.1L, when car is at idle it noisy almost sounds like a sterring pump. As you drive it will whine with the speed of the car it has 73000 miles on it its been doing this since around 39000 miles. If you can tell me what this may be I appreciate it. Thank You.
There is an idler pulley and tensioner on the serpentine belt. They can cause this noise.
SOURCE: 1999 TAHOE z71 STOP AFTER FUELING GAS
take it to a GM dealer and see if the electronic key reader needs to be replaced
SOURCE: My 1997 chevy truck c k 5.7 v8 4 speed auto whenI
if only in certain gears its the trans need overhaulmwill be costly for hard parts
SOURCE: 1996 Chevy Lumina Sedan Whining noise from engine
The pattern you describe is consistent with an alternator going bad. Maybe the fields are already rubbing together. Test it this way: Start the car and leave on idle, when the whine is worse, then start using up electricity, by increasing the demand. Turn on AC, then lights, then full blower and then high beams. If there is a change in the whine, then either alternator or voltage regulator is the culprit. When a compressor pulley bearing is bad, noise shifts just by turning AC on and off.
SOURCE: Drive a 95 Chevy Lumina 75 miles and odometer
cause the little plastic wheel the drives the odmeter is slipping on the shaft in the speedo head
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