Well when we start the car and it is running and when we are driving it,it whines/whirres it only changes in pitch when we excelerate,not when we turn the wheel. Cant pinpoint the noise its just under the hood. Any advise???
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Re: whining noise from my cadillac
First of all, check to see if there are any fluid leaks under the vehicle, specifically anti-freeze or oily type of leak. If so, the fluid is probably getting on your fan or alternator belts and causing the noise. Otherwise, your belts could need to be replaced, or if your vehicle has an idler pulley, it is possible that it is bad. One other thing to note, if you are using air conditioning, sometimes, the condensation will spill on to the belts, if the belts are worn, they will squeal.
You have almost ten questions on here about this car. One you said the motor wont start. anouther you said the car runs but then stalls when you stop or turn. so why dont you post what is actually wrong with it so it can get fixed?
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Possible bearing in one of the drive pulleys. I have changed numerous alternators for this noise. Take the belt off and start the car. If the noise goes away you know it will be pulley related and not transmission related. If noise goes away, spin all pulleys by hand to determine the defective/noisy one
Whining from the engine or the driveline itself? Whining can be caused by lack of or low lubricant, a bad bearing or a serpentine belt on the way out. Can you be more specific? Does it only whine while you are driving, or does it whine all the time and changes pitch with engine RPM? Does turning the tires change the noise, if so, does it go away in one direction but not the other, or does it increase in noise the closer you get to full lock on the steering wheel?
Take the belt off and spin all of the pulleys. the bad component should be obvious. high pitch whine is usually alternator bearing for the 98 3800 its timkin part# 100ccab or it can be the power steering pump(but the pitch will change as your steering if it is that) water pump, idler and tensioner pulleys(if you have to change either one, replace the tensioner itself). if you have the supercharged model there are a few parts that can whine( or the s/c is low on oil.)
The A/C compressor constantly turns because the pulley is connected into the serpentine system. The whining noise is pretty indicative of a low charge in the A/C system. I would start by having your A/C pressure checked and charged if needed.
Sounds like a dry/failing bearing or power steering pump noise. You first need to try to track down where the noise is originating, and the most likely place is at the front of the engine.
I would start by listening with the hood up while parked with the engine running and the noise present, and seeing if it is coming from there. If so, the most likely cause is something connected to the belt - e.g. AC compressor clutch, tensioner, power steering pump, or generator. Can also be caused by the belt just slipping (warn out belt, tensioner not working properly).
The high pitched whine in reverse sounds normal for a honda. Ever honda I have had makes a similar noise while in reverse. The spinning, scraping noise in drive is not normal. You might want to see a mechanic about that.