Brake Booster

FMO · Post by **FMO** » Mon Oct 08, 2007 3:27 am

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

FMO · Post by **FMO** » Wed Oct 10, 2007 11:27 am

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 to solve.
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

kmartin83 · Post by **kmartin83** » Wed Oct 10, 2007 11:33 am

The perfect fix -- easy and little to no cost!

mdrburchette · Post by **mdrburchette** » Wed Oct 10, 2007 1:47 pm

Glad you figured it out. That one was a bit perplexing.

So Cal Mark · Post by **So Cal Mark** » Wed Oct 10, 2007 2:52 pm

sounds like the firewall is flexing, maybe a crack or two?

FMO · Post by **FMO** » Thu Oct 11, 2007 7:36 am

Hi!

No there is no crack in the firewall. But when I have choose to setup my throttle linkage like I have, and the wire is too tight, the wire will move when the engine is moving forward a bit ( when I brake).

http://home.online.no/~ellholt/fiat124s ... pDispType=

regards

FMO

So Cal Mark · Post by **So Cal Mark** » Thu Oct 11, 2007 10:26 am

I just can't imagine the engine moving every time you brake

FMO · Post by **FMO** » Thu Oct 11, 2007 4:24 pm

Hi again!

Neither could I

But the rpm didnt raised when I braked normally, only when I brake heavier. And when the throttle wire was so tight, I can imagine ( now ) that the movement of the engine could cause the problem I had.

manoa matt · Post by **manoa matt** » Thu Oct 11, 2007 9:58 pm

Maybe time for some new engine and trans rubber mounts.

matt

FMO · Post by **FMO** » Fri Oct 12, 2007 1:59 am

All the rubber mounts are years old

FMO · Post by **FMO** » Fri Oct 12, 2007 1:59 am

3 years old ---he he, forgot ta push my num lock on