I have a 2000 Dakota w/3.9L engine. It was making a squeaking sound accompanied by an off-time knocking. I was told that it was a bearing in the AC compressor. OK, fine.
Today I was driving it and the squealing sound was really loud. I heard (and felt a pop), the engine started pouring out some bluish smoke, and the engine stalled.
I pulled to the closest parking lot and popped the hood - no more smoke, but the squealing was a bit more pronounced. While it wasn't speed sensitive before, it seems to be now. What's also strange is that the random knocking seems to have disappeared.
The squealing goes away entirely when I'm going faster than 40, but is at its worst at 25-30 mph. Guess what, I also drive a lot in residential areas, so this is really annoying. Additionally, the squealing comes and goes.
While I don't think that my truck is magic, the one problem seems to have fixed itself, while the other one got worse. Can anyone give me a good guess at what this is and what I need to?
2007-01-13 11:35:13 · 5 answers · asked by DA 5 in Cars & Transportation ➔ Maintenance & Repairs
Take your belt(s) off and see if the squeal is there or not .
if there is no squeal then a pulley has a dry bearing; a/c compressor main shaft bearings,a/c clutch pulley bearing ,alternater may have a bad bearing or bushings,and it is possible your idler pulley may be bad .
blue smoke would suggest a burnt away belt running over a locked pulley. If the a/c compressor is locked unplug the a/c clutch power wire at the compressor (usualy the pulley will freewheel unless the clutch is also damaged in that case a used compressor is way cheaper than a new one) the a/c compressor runs in the winter with the heater to evaporate moisture faster off the interior glass. unplugging it will save a few bucks on gas too over winter.
I don't know how many miles you have on it but it would be a good idea to change your fuel pressure regulator after about 120,000 i was on a 2,000 mile trip when mine went bad and my truck quit (tow bill was atrociouse).
2007-01-13 12:30:16 · answer #1 · answered by dinosaur 4 · 0⤊ 0⤋
Sounds like a pulley to the alt or ac or ps is locking up causing your belt to rub and burn. That is what that blue smoke is. Look ar your belt to see if is burned or worn out and cracked bad. Take off belt off all pulleys so you can turn each pulley by hand to see which one is tight. I'm gonna guess it is your alt pulley.
2007-01-13 11:44:57 · answer #2 · answered by JUAN C 3 · 0⤊ 0⤋
If the clutch or bearings in your A/C compressor is/are bad, it will squeal.
You may have broken a belt to the A/C compressor and damaged the belt to other accessories.
If you have to ask, I'd let a professional look at it.
2007-01-13 11:45:17 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Belt
2016-05-23 22:23:23 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Um, does your A/C still work? If not you may have lost the belt possiblly from a seized pulley, or loose one.
2007-01-13 11:40:09 · answer #5 · answered by Clark W Griswold 4 · 0⤊ 0⤋