Question about 1998 Dodge Ram 1500 4WD
Engine is quiet when in park, but whines/ squeals when in neutral, reverse, drive. I had my wife move the gear selector while I looked at the motor, and I noticed that the main pulley (crankshaft pulley) moves forward a bit when the gear selector is moved from park- could be normal, but looks weird to me. The whining begins immediately, and settles down to quiet again when moved back into park. If I drive the truck, the noise seems to go away at higher speeds as long as I keep my foot on the gas. As soon as I let off, the noise comes back. I just replaced the idler pulley, thinking it was the problem. I was wrong. Truck still runs strong and everything else seems quiet. Belt is new. I also noticed that the tensioner pulley has some ''play'' in it. I thought that could be the problem, but it spins freely, so that made me think it was normal. By ''play'' I mean there is a slight movement if I try to wiggle it.
Just a thought- remove the oil filler cap when the whine is present - (this checks if PCV valve is faulty, causing high crankcase vacuum, which in turn causes a whistling/whine noise as air leaks past engine oil seals). Worth a check.
Try listening with a short piece of hose pipe to locate immediate area/source of noise.
Posted on Jun 17, 2009
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Posted on Jan 02, 2017
It sounds to me as if your serpentine belt and/or belt tensioner is bad,
I had a similar problem on my s10 and replaced belt,idler & tensioner.
All three pieces ran about $80.00. I did the work myself. Hope this helps.
Posted on Mar 06, 2009
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