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2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Pull off the belt and inspect it. No bad glazing on either side or cracks, it's not the belt. Then spin all your pulleys and see which one (if any) are an issue.
Does the belt feel loose? There should be no more than a 1/2" of deflection per foot of the belt. Make sure the tensioner isn't binding. If you recently spilled antifreeze, ps fluid, or anything else, it can cause a squeak. Just pull off the belt, spin all pulleys (minus the crank pulley) and listen for any noise or binding. If everything seems in check, buy a different brand belt. The two brands that seem to work for most are dayco and gatorback.
For whatever the dayco belt will squeak right out of the box for my truck.. And the gatorback is fine. And I've heard others say the same, as well as the opposite.
Now I just keep the dayco as a spare. If I'm bored one day, I'll swap the dayco in and see if it still acts up.
possible causes of squeak are:
bad belt
bad idler pulley bearing
bad tensioner assembly or pulley bearing
bad water pump
ps pulley not pressed on deep enough
bad alternator bearing.
bad AC compressor clutch or bearing.