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Old 01-22-2014, 05:57 PM   #3
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Re: Brake pedal lowers RPMs

I tried replacing the brake booster check valve: that wasn't it.

I also tried pulling the brake booster hose off: that didn't make the symptoms go away. When in park, touching the brake pedal killed the motor.

Another clue: I just replaced the spark plugs. They were a mess -- crud all over and smelled like gas.

Could it be the fuel pressure regulator? There's a vacuum hose going to it.
jmgfixmycar is offline   Reply With Quote