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Brake booster

Hi!

I am writing this in english, since I cant explain the problem in german, :( .
I have bought a new brakebooster and installed it. It works just fine, the car is braking good +++. The only problem is when I brake a bit harder then normal, the revs at the engine is getting higher??????
When I drive and press the clutch down + press hard at the brakes, my engine`s revs is raising high, when I disengage the brake pedal, it become normal again? Can someone answer me why this is happening?

Best regards
FMO

<span class="anonymus">von: FMO</span>

Gast

Gespeichert von Gast (nicht überprüft) am Mo. 8 Okt 2007 - 11:32

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Hi,
that is an unusual behaviour. Normally when pressing the brake pedal
several times in a row the idle RPM will decrease. An increase points
to a leak somewhere in the brake booster through which additional
(unmetered) air gets into the engine.
Carefully check the hoses, however I would rather suspect a problem
with the brake booster itself.

Marcus

von: MarcusMüller

Gast

Gespeichert von Gast (nicht überprüft) am Mi. 10 Okt 2007 - 17:24

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Hi!

Finally I found what the problem about the high rpm when braking was. An another Fiat club member in Norway have had the same problem with his Fiat Dino Spider. The problem was very easy :o
My trottle cable was to tight, since the engine was moving forward ( a little bit) when I was braking hard, it also moved the throttle cable, and then the rpm was increasing lol. The only thing I had to do, was to easy the throttle cable up a bit, and voila everything was ok :)

regards

Fred Michel

von: FMO