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post #1 of 9 (permalink) Old May 30th, 02, 10:33 AM Thread Starter
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What are the symptoms of a lose belt? I have an 87 camaro that squeals like crazy. I replaced the belts, and then the altenator. This helped a little bit, but i can still hear squealing when i start the car, and if i hit the gas hard. Also, the anmeter (sp?) keeps dropping when is squeals. Could i have bought a bad altenator? It was "remanufactured"....
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post #2 of 9 (permalink) Old May 30th, 02, 01:21 PM
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<BLOCKQUOTE>quote:</font><HR>Originally posted by wplax26:
What are the symptoms of a lose belt? I have an 87 camaro that squeals like crazy. I replaced the belts, and then the altenator. This helped a little bit, but i can still hear squealing when i start the car, and if i hit the gas hard. Also, the anmeter (sp?) keeps dropping when is squeals. Could i have bought a bad altenator? It was "remanufactured"....<HR></BLOCKQUOTE>


Try lublicating the belts a little. I had the same problem, once, I replaced the belts and got a little better, then I lublicated them with a little grease and that annoying squeak went away...

Good luck.
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post #3 of 9 (permalink) Old May 30th, 02, 05:08 PM Thread Starter
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How do i go about lubricating the belts? I'm afriad i'll use something corrisive. Olive Oil? Petroleum Jelly? Engine Grease?
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post #4 of 9 (permalink) Old May 30th, 02, 07:09 PM
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Have you replaced the tensioner and the idler/tensioner pulley? Do not put any lubricants on your belt. If anything, a belt dressing is available at any parts store. Its a temporary fix if it is indead the belt. Did you use a good belt or did you go cheap? Gates is about the best, Top Cog is ok too. Remember you get what you pay for.

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post #5 of 9 (permalink) Old May 30th, 02, 08:02 PM
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Don't put lube on the belts. The lube will eliminate the squeal, but the belt will still be slipping even more.
Check if your alternator pulley is worn out and can't grip the belt anymore.
You should not be able to turn the alternator pulley with your hand (engine not running of course).

I prefer Gates belts, we use them on our fleet with good results.
David

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post #6 of 9 (permalink) Old May 31st, 02, 01:41 AM
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Use a bar of soap on your belt. That seems to quiet them down, but I'm not sure if it's a fix to the real problem.

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[This message has been edited by Spames (edited 05-31-2002).]
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post #7 of 9 (permalink) Old May 31st, 02, 10:19 AM
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Also realize that right after charging the alternator load is the highest. The alt is replacing the power taken from the battery to start up.
Once the battery is charged back up, the alternator load goes back down, and belt load is eased.
A slightly larger diamiter pulley will grip the belt better, also the more belt wrap around the alternator pulley the better the grip.
David

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post #8 of 9 (permalink) Old Jun 1st, 02, 06:15 AM Thread Starter
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"Don't put lube on the belts. The lube will eliminate the squeal, but the belt will still be slipping even more.
Check if your alternator pulley is worn out and can't grip the belt anymore.
You should not be able to turn the alternator pulley with your hand (engine not running of course).
I prefer Gates belts, we use them on our fleet with good results.
David"

1.Do you mean with the belt on the altenator or off?
2. I bought my altenator as "remanufactured". Do they replace the pulley?
3. I didn't get Gates belts , could that really be the problem?
4. I didnt' replace the tensior either, but i don't think my car has one, it runs on multiple belts. (87 305 FI Z28)

[This message has been edited by wplax26 (edited 06-01-2002).]
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post #9 of 9 (permalink) Old Jun 1st, 02, 05:41 PM
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You should not be albe to turn the alternator pulley by hand with the belt on it. If you can make the belt slip by hand, it will slip when running. Either the belt is too loose, or it is not a good belt.

Some brands of belts will grip better than others.

I doubt you have a tensioner. If you are not sure about the proper tension to set your belt, drop by a GM dealer and ask them to show you.

We have 1974, 1977, 1981, 1984 year model chevy pickups on our farm, ALL have had problems with belt slipping.

My old 84 pickup was one of the worst offenders and had a pretty good wrap on the belt, meaning the belt only ran the alternator on that model, but still slipped unless very tight, had a good pulley, and the belt was less than two years old, (Gates).

The older models the belt ran the alternator, then went over the smog pump pulley, so the alternator only had about a quarter of the pulley in contact with the belt! They would slip very easily.

Some alternators don't come with a pulley, and you have to re-use yours. Others come with a new pulley. I don't know if any come with a used pulley on them but it's possible.

Examine the pulley belt groove closely and see if the sides are flat.
David

------------------
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