Hello there all,

recently my idle has been idling weird. it would go up and down and up and down. however if i turn the vent fan on, the idle stabilizes. i tested something out tonight and found out that if i press the brake pedal really fast and repeatedly, the idle rises until a certain and drops and keeps doing that.


anyone know wtf is wrong with this? thanks


Modified by stripes777 at 11:55 AM 4/27/2008

 

anyone?

 

Look for a vacuum leak from the brake booster or the booster valve or hose.

 

well mine did that for a while and progressively got worse... it was my FIAC theres a great right up for it on here but i cant seem to find it....

 

thats normal. pumping the brakes repeatedly in an automatic will raise the rpm. its a normal vacuum opperation.

 

how do i look for leaks in the brake booster?

my car is 5 speed, not automatic

thanks

 

pretty sure its normal

 

sorry pumping the brakes in any car with "power brakes" will raise the rpm temporarily.