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At Idle when I push the brakes the engine drops revs

Posted: Sun Feb 22, 2015 4:24 pm
by Sirlancealot_alot
Hi everyone, at idle when I push down on the brake pedal the engine drops revs, when I let the pedal out the revs come back up. I'm working mostly on my own so I struggle to be at the front end and in the drivers seat at the same time, what should I start checking. Thanks.

Re: At Idle when I push the brakes the engine drops revs

Posted: Sun Feb 22, 2015 4:54 pm
by Jordi
Not a lot, presuming it has servo assisted brakes and isn't even noticable when driving?

It's pretty normal on older cars for this to happen.

Re: At Idle when I push the brakes the engine drops revs

Posted: Sun Feb 22, 2015 5:20 pm
by Sirlancealot_alot
Thanks, I had an older car when I was younger, now my memory has faded.

Re: At Idle when I push the brakes the engine drops revs

Posted: Sun Feb 22, 2015 5:22 pm
by Sirlancealot_alot
While your there, what if it becomes noticeable when driving?, which should be hard to spot as the rev's always drop off when I'm braking.

Re: At Idle when I push the brakes the engine drops revs

Posted: Sun Feb 22, 2015 5:45 pm
by Darrell
My rpm does not drop off when brakes applied.
Is it possible the servo is leaking air ??

Re: At Idle when I push the brakes the engine drops revs

Posted: Sun Feb 22, 2015 6:43 pm
by RickUK
Not sure what the problem could be really,possibly something to do with the vacuam if it does have servo assited that is,then that could be a possible cause.

One thing i am certain about and that is when i apply my brakes the speedo drops down by a massive amount :hahaha: :hahaha: