Wierd.... - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-04-2006, 10:35 AM   #1
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noise on start up!! I put in key. turn to ON wait for the double ding
then start... after car starts and i remove my foot from the brake
and thats when i here the noise..its coming from the floorboard,
behind the fire wall somewhere around there. is this just the brake
disengaging?
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Old 05-04-2006, 10:40 AM   #2
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could you describe the noise in a little more detail?

Have you checked the PS Fluid lately?

Have you accidently put transmission fluid in the PS reservoir?

-IKZ
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Old 05-04-2006, 10:48 AM   #3
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ps fluid is fine, and no i didn't put trans fluid
in the ps resevoir.
It only happens when i start the car and remove
my foot from the brake pedal...sound like the brake pedal
is having a problem retracting. brake fluid level is fine.
should i change the fluid?
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Old 05-04-2006, 10:55 AM   #4
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Sorry for the odd questions, but they had to be asked.

Would you mind describing what it souds like?

Does it make the sound only in park?

Try to start the car, keep in park, then pump the brake. It could be the engage/disengage of the transmission. (i.e. your foot has to be on the brake to shift from park.)
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Old 05-04-2006, 11:02 AM   #5
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Huh, that question came out of left field, maybe I just don't know where you are going with it. (Sidenote: my dad has always told me tranny fluid and PS fluid are basically the same, as far as the PS pump is concerned, no I'm not gonna put PS fluid in my tranny).

Check for loose heat shields. Sometimes when I start the car, my master cylinder makes some noise, and I think it'* vacuum building up.
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Old 05-04-2006, 11:07 AM   #6
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Quote:
Originally Posted by J Wikoff
Huh, that question came out of left field, maybe I just don't know where you are going with it. (Sidenote: my dad has always told me tranny fluid and PS fluid are basically the same, as far as the PS pump is concerned, no I'm not gonna put PS fluid in my tranny).

Check for loose heat shields. Sometimes when I start the car, my master cylinder makes some noise, and I think it'* vacuum building up.
x2 on the tranny fluid in ps. they are the same
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Old 05-04-2006, 11:20 AM   #7
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Yes..the fluids are basically the same. Let'* get back on topic.

Please describe the sound/feeling better. There is simply not enough to go on yet.
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Old 05-04-2006, 12:33 PM   #8
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Quote:
Originally Posted by J Wikoff
Check for loose heat shields. Sometimes when I start the car, my master cylinder makes some noise, and I think it'* vacuum building up.
its not a heat shield, because its not rattling. i guess it could be the master cylinder
its more of a pressure release sound. kinda of a squeky rumble. it only lasts a second or 2 after break pedal release.

don't no if this helps, not really sure how to describe the noise.
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Old 05-05-2006, 11:53 AM   #9
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Lubricate the emergency brake cable.
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Old 05-05-2006, 08:51 PM   #10
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If you have two people have one started and the other stand by the enigne bay with the hood open see if can that way what area it is coming from.
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