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Old 06-27-2018, 03:28 PM   #1
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Default AC and alternator problem

On my 97 Hardbody 2DL the alternator and AC don't work unless the
Belt slips and squeals then they both work fine for a few minutes. When they quit working if I rev the engine till the belt slips they both work again.
The alt is new AC ice cold all belts seem fine and not loose.
Anyone else ever had this problem?
Any ideas?
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Old 06-27-2018, 04:10 PM   #2
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both belts at the same time? by chance is the crank pulley wobbling??
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Old 06-27-2018, 04:22 PM   #3
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How loose are your belts?

It could be that the pulleys are not being turned at all when you hear no squeal.
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Old 06-28-2018, 05:54 PM   #4
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well, it is a 4 cylinder truck. that explains the belt screaming.
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Old 06-30-2018, 03:51 PM   #5
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Quote:
Originally Posted by cadillacdude1975 View Post
well, it is a 4 cylinder truck. that explains the belt screaming.

My 1998 4-cylinder Frontier (232K) has had belt noise issues, but not in last 2 years, this is fixable with correct belts, correct tension, etc.


My 2004 4-cylinder Frontier has not had this issue.
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Old 06-30-2018, 09:03 PM   #6
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from what we have figured out, the 4 cyl belt problems are two fold. cheap belts for one, and glazed pulleys from age. the VG engines never had the recurring belt screaming like the 4 cylinders. not sure why.
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