twistedkreation

iTrader: (1)

ive got a terrible squal when i cold.start my car with the heat or defrost on. Belt or pulley? Barely happens when heat is off. Like .8 secs. Just wondering.what route to go

Chris Gregg

iTrader: (59)

When you have defrost on the car utilizes the compressor system, even if set to heat. Therefore, when the compressor kicks on, it draws on the engine to turn it. If the belt is badly worn and/or loose, it will squeal. Any belt will squeal if loose or worn.

So, you need to inspect the belts to evaluate each ones condition. If the compressor belt looks good, then it likely just needs to be tightened. If it looks cracked and worn, replace it.

twistedkreation

iTrader: (1)

Good deal. Ill pull it in the garage today and go to town

DennisMik

iTrader: (2)

The heater blower motor could be making noise. But the blower motor is inside the car. Are you sure the sound is coming from under the hood? If the noise id from under the hood, maybe the belt is loose and needs tightening or replacement.

twistedkreation

iTrader: (1)

Its def underhood noise. I looked at the belts as best as i could but as we all know they are in hells kitchen on the 3.0 so im gonna try again tommorrow with the pass wheel off

T_Behr904

It could be possible that the belt needs tightened up a bit. If it has mileage on it, it could be getting worn and slipping some.

I had a new belt put on when I did an alternator change a couple months ago, and after several days I was getting a bit of a squeal when I started up the car. I just retightened it and it's been good ever since.

twistedkreation

iTrader: (1)

Ive got 59000 miles on the car so i am not.too sure if the belts are new or not. But ill look at them closer tommorrow. And ill look into tightening.them. Location to tighten?

twistedkreation

iTrader: (1)

Haha wow really? I do prefer to interact with people instead of looking at an old.post that may not contain an answer i can 1. Understand or 2. Coulnt find by searching. nice title though

Puppetmaster

iTrader: (48)

This writeup shows you where the various belt tensioners are to tighten/loosen:

http://maxima.theowensfamily.com/udp.asp

If your belts are in good shape, and the proper tension, try spraying some belt conditioner on them to get rid of any remaining squeal. I had crazy squealing with my UDP install but this did the trick.

http://crcindustries.com/auto/?s=05350

twistedkreation

iTrader: (1)

Thanks a bunch