I just replaced my alternator. After I did I noticed everytime I turn off my car near the alternator there is a noise that sounds like a leak in the tire. But after about 10 seconds it just stops. It does it everytime I drive. I know its not the tire. I took off the top powersteering line, and the brake master cylinder off. Anyone got any ideas what the noise is?

 

Could be air purging out of the air intake system...?

 

Its never made it before. Its on the driver side right above the alternator. It doesnt sound like its the brake booster or whatever it sounds like its lower. I just cant figure it out.

 

loose vaccum hose. do you notice a fluxing idle?

 

i think its the brake booster friend of mine has the same problem just go junk yard and buy a used one

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Perfectionist &raquo;</TD></TR><TR><TD CLASS="quote">Year? Model? Please move a little to the left. I can't see your car.</TD></TR></TABLE>If it's got a 2-stage intake manifold, there's a vacuum reservoir tucked under the IM. Did you forget to put a hose back or maybe you cracked it?

 

I'm with Jim on this one, you might want to check the tank and hoses.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by philcv4 &raquo;</TD></TR><TR><TD CLASS="quote">I'm with Jim on this one, you might want to check the tank and hoses.</TD></TR></TABLE>

 

you broke your car part it out

 

blow off valve? blueshhhhhhhhhhhhhhhh

 

do u have a cold air intake? mine does that all the time.

 

Its a 95 LS. It does it when its running also I noticed today. Everything seems the same, my brakes work just fine, it idles just normal. I think its under the IM. Its not the Cold air.

 

When I had the AEM CAI my car did that. I never worried about b/c it didn't idle funny and it ran fine.

 

it idles spuratic when its cold, it will rev high then low, but not as bad as when the IACV is screwed up.

 

This guy dosent know what hes talking about.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by j87w &raquo;</TD></TR><TR><TD CLASS="quote">Its a 95 LS...</TD></TR></TABLE>Well, that doesn't have the 2-stage manifold so there's no IAB vacuum reservoir...

Try to get at it from several differend angles, while someone else sits inside to turn off the engine. Pinpointing the location would be the biggest help at this point.

I think any of the vacuum things would not last more than a second after turning off the engine. That's why the brake booster would be a possibility. (IAB reservoir too, if it was a GSR.) I don't think your car has a vacuum reservoir for the ventilation dampers, either. AC refrigerant flowing after shutdown? Do you have AC turned on?

 

this guys car is a piece he needs closure

 

No the A/C is not on. I sounds to be below the intake manifold, and its below the brake booster. Im still cant find it. In terms of sound, its not really loud. Its about as loud as the the intake but its a lot higher pitched.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by j87w &raquo;</TD></TR><TR><TD CLASS="quote">I sounds to be below the intake manifold, and its below the brake booster...</TD></TR></TABLE>The steering rack is down there, so maybe something's screwy with the spool valve or the tubing to the rack??? Take off the PS belt to see if that makes the noise go away.

 

Alright, Ill try that. Thanks