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Old 04-20-2014, 06:30 PM   #1
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slight squeaking sound at start up

so i recently started to hear a slight squeal sound at start up. its not loud but noticeable. it only last for about a min, and after engine warms a bit its gone.

should i be concerned? thanks in advance.
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Old 04-20-2014, 06:52 PM   #2
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If it sounds kind of like a hair dryer by your passenger rear tire and It stops after 2 minutes or so it's your sexondary air injection pump
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Old 04-20-2014, 06:53 PM   #3
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yeah thats what it sounds like. so is that ok? or sign its about to go? thanks for your input.
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Old 04-20-2014, 07:03 PM   #4
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No it's a normal sound and you should hear it on every cold start.
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Old 04-20-2014, 07:08 PM   #5
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ok thanks very much ! i can sleep now lol
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Old 04-21-2014, 05:51 AM   #6
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Hate to ruin a good nights sleep. The air injector is one sound that is expected but there is a bearing in it that can go bad. I'm starting to hear a very high pitch squeal while the injector is running. So I suspect that the bearing that the injector runs on is going bad
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Old 04-21-2014, 10:12 AM   #7
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Quote:
Originally Posted by kk2002s View Post
Hate to ruin a good nights sleep. The air injector is one sound that is expected but there is a bearing in it that can go bad. I'm starting to hear a very high pitch squeal while the injector is running. So I suspect that the bearing that the injector runs on is going bad
Yep, eventually it will start throwing codes. Theres a write up over on rennlist on how take the pump apart and lubricate the bearing that goes bad.
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Old 04-23-2014, 10:23 AM   #8
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Well last night I took my SAI-pump apart and using a Lube Needle, filled the motor bearings with grease.
I started and no high pitch squeal, just regular hair dryer sound and that with engine cover off so I could hear very clearly
So time and more starts will tell.
It seems all I do is repair/replace sealed bearings.
My table saw, my jeep's AC compressor clutch pulley.
These dried out creatures are everywhere

Good write up on rennlist
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Old 04-24-2014, 01:08 AM   #9
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Mine is more of a hum than squeal...you might want to lube it as kk did or you might be buying a new pump.
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