Why do my rpm's drop from 1100 to 100 after pressing my brakes about four to five times in running park position?
Saturday, February 28th, 2009 AT 1:12 PM
3 Replies
MERLIN2021
MECHANIC
17,250 POSTS
You are evacuating the booster vacuum, and the engine supplies the vacuum to the booster, check the check valve on the booster, air should pass in only one direction thru the valve. Why are you pumping the brakes in park? Bleeding the brakes?
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Saturday, February 28th, 2009 AT 1:15 PM
JAMESKOVAC
MEMBER
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In regards of 95 Saturn SL1. No. I was not trying to bleed my brakes and my brakes are fine by the way. I just couldn't understand the logic because I have never seen or heard that happen to any car before.
Now I need to find out where my valve and my booster is. You may be right! I may have an air leek somewhere in my valve on my booster.
Thanks!
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Sunday, March 1st, 2009 AT 9:37 AM
MERLIN2021
MECHANIC
17,250 POSTS
On the driver's side of the firewall, behind the master cylinder. The valve is at the end of the black vacuum hose and goes into the booster through a grommet.