FearTheH

iTrader: (5)

So i've had this minor problem with my em1, if i pump my brakes while the car is at idle then the idle rpms increase.... could this be from a vacuum leak between the brake booster and intake mani? I'm hoping thats all this is so i can just replace that funky shaped vacuum hose. Give me some input, thanks

waaBAAH

this is normal.

85_305

lol thats normal dude. EVERY car does that if you pump the brakes repeatedly.

FearTheH

iTrader: (5)

well yeah, but rpms are going higher than they used to.. ehh maybe my cars just gettin old. I may replace the hose anyways just to see what happens. And i can think of a lot of cars that dont do that... so no, not "all" cars do that.

85_305

Fine it may not be all cars. But every single one of the 22 cars I'VE owned, do it.

FearTheH

iTrader: (5)

I'm not tryin to argue with you haha, my z28 didn't do it. But I'm also not sayin that my civic didn't do it before, its just increased the rpms that it hits and I'm wondering if it could be a leaky vacuum line. It also does this very very random whining thing while the car if off, it kinda sounds like a fuel pump priming only a higher pitch...anyone else have this? Haha it pisses me off!

Murk 'EM

theres a check valve between the booster and the manifold check that to see if its working that high pitch sound might be a vacuum leak

callmechad

fear my mom had the same issue and we replace the vacuum line and it lowered the rpm's alot. i would give it a shot. im not saying it would help. but ti did with my moms

FearTheH

iTrader: (5)

Thanks, I'm not thinking that high pitched whining noise is going to be a vacuum problem, it only does it when the car is off, I could go a whole day or two without drivin it and it will still do it...it runs fine and has done it for several years, more annoying than anything.

85_305

Oh a high pitch whine? Hmmm. That could def. be a vacuum leak. Grab a can of ether and spray all the vac. lines and see if the rpms fluctuate.

FearTheH

iTrader: (5)

ITS WHEN THE CAR IS OFF!!!!!! its not a vacuum leak!

85_305

Ya I just caught that.

I'm spent. Good luck.