I have a 2004 GC Limited with 105,000 miles. The vehicle emits a lvery loud whine after ignition that changes in frequency with RPM, independent of whether the car is in gear or not. Seems to be associated with the front end gear box or steering mechanism as it can become more pronounced when the wheels are turned, either at rest or underway. The whine tends to be loudest when the vehicle is cold, and tends to lesson when the vehicle has been underway for some period of time, has some temp. dependency. Any ideas of what is causing this very pronounced whine? How to remedy?
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Re: 2004 Grand Cherokee Whine - What is the Problem
It sounds like your power steering fluid is low. When the fluid is low there will almost always be a constant growl coming from the pump. Worst case - it may be the pump itself going bad. . I own 3 Jeeps but have only had this problem on my 87 Cherokee. Ford PS pumps are notorious for making noise as they get old, but they still seem to work ok. This may be the case with your Jeep. If the PS still works and the fluid level is normal, it may just be a matter of whether or not you can stand to listen to the noise.
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Did you check all the fluids? Power steering can whine when fluid levels get low. I would think of things that are driven by the engine: power steering
pump (check the power steering fluid), AC compressor, water pump, and so
Check out the belt tensioner; make sure it's not too tight, and that the pulley is properly lubricated. If that doesn't fix it, ask your mechanic about timing belt issues (fairly soon).
The noise you are hearing may be caused by a loose or worn serpentine belt and is slipping during all engine speeds while under load. It could also be a worn serpentine idler pulley that has worn out. These are just two areas for you to consider,but it is hard for me to tell without actually hearing the noise. Take the vehicle to an autoparts store and have someone check these engine components for a possible cause. They won't charge you anything.
a whine or a squeel
if you put hard long life pads on the material used sometimes makes that noise the nonmetalic pads are the best way to go as they don't wear out the rotors as bad but you need to change the pads sooner . the harder the pads the longer the life but they are hard on the rotors as well ,let the pads seat for a while and see if the noise eases up
you have to be careful that it is not the safety neutral switch.since stall means different things to different people,it is hard to tell exactly what is the issue.if the safety neutral switch,which is wired to the start and ignition circuits is bad,it could kill the engine.
jack up the vehicle and look for bad or shorted wires or connectors before doing anything else.
the other thing is how it behaves with no load on it. put a floor jack under the rear differential and raise it just enough for the wheels to be off the ground a couple inches.put it into reverse with no load and see if the wheels turn in 2wd mode.
yes low speed whine noise from the center of he vehicle is completely normal every one with the same drive train as your does it. as for jestan flushing the oil will not correct any problems that already exist but it is a good idea to prevent problems from happening