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car screeching at startup

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Old Jul 17, 2011 | 05:12 PM
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Default car screeching at startup

Hey guys i get the car screeching at startup and also when i drive it when its cold. It seems like after its warmed up it goes away! I took off all the belts and started the car to see if its the pulleys or belts but it still happened! any ideas guys?

Last edited by sjthegreat1; Jul 17, 2011 at 05:19 PM.
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Old Jul 17, 2011 | 05:42 PM
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Hows the teeth on the belts? Is the pulley wet? Did you try using belt dressing?
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Old Jul 17, 2011 | 05:55 PM
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Does it also clunk at start up? If so, could be low on oil.
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Old Jul 17, 2011 | 06:00 PM
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ya i checked the oil it seems fine
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Old Jul 17, 2011 | 06:08 PM
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umm, don't take the belts off. It's a belt slipping. Put them on and tighten them.
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Old Jul 17, 2011 | 06:10 PM
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Originally Posted by Itzcashew
Hows the teeth on the belts? Is the pulley wet? Did you try using belt dressing?
there aren't teeth on serpentine belts and you DO NOT use belt dressing on serpentine belts (only old school v-belts)
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Old Jul 17, 2011 | 06:34 PM
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slipping belt
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Old Jul 17, 2011 | 07:05 PM
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Guys its not the belts i took them all off and then started the car and it still happens!!!!

Last edited by sjthegreat1; Jul 17, 2011 at 07:09 PM.
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Old Jul 17, 2011 | 07:38 PM
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drive shaft? trans? clutch?
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Old Jul 17, 2011 | 07:39 PM
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Cant b because it still does it when it starts up and is cold!
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Old Jul 17, 2011 | 07:54 PM
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Originally Posted by binder
there aren't teeth on serpentine belts and you DO NOT use belt dressing on serpentine belts (only old school v-belts)
lol sorry mind fart. Still used to working on older cars.
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Old Jul 17, 2011 | 08:12 PM
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The sound you describe sounds like a classic belt sound. I would check your power steering fluid and your transmission if you have an automatic.
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Old Jul 17, 2011 | 11:08 PM
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Power steering is belt-driven, so forget that, since it happens with the belts off.

Does the noise seem to be coming from the front or from the back of the engine?

How many miles on the car?

MT or AT?

How's the oil pressure at startup and once it's warmed up?

Video would help.
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Old Jul 18, 2011 | 05:22 AM
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hmm, i guess the only thing i would ever describe as a screech would be a belt. Try using some other descriptive words or get an audio clip.

If it was cams it would be a metal on metal and i would consider it more of a high pitch grinding metal sound. That's the only thing (crank or cams) that would be spinning and could cause something even closely resembles a screech.
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Old Jul 18, 2011 | 05:23 AM
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Originally Posted by Itzcashew
lol sorry mind fart. Still used to working on older cars.
no worries. I crosses my mind when someone says that too because i use it on my lawn mower belts. I just didn't want a non-car guy to accidentally ruin a belt.
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Old Jul 18, 2011 | 06:40 AM
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It seems like its coming from the front passenger side. The car is an AT with 50k miles on it..
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Old Jul 18, 2011 | 07:06 AM
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A pump of some sort?
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Old Jul 18, 2011 | 09:10 AM
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mine does that too because of the lightweight polished pulleys the belts slip at the start and and when theyr cold
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Old Jul 18, 2011 | 09:32 PM
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What part of

"I took off all the belts and started the car to see if its the pulleys or belts but it still happened!"

is so difficult to understand?
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Old Jul 19, 2011 | 04:56 AM
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Post vid/audio or /thread
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