Pumping brakes causes idle problem

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Kona
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Pumping brakes causes idle problem

Post by Kona » Mon Jan 08, 2024 4:01 am

No idea what is going on. When I pump the brakes the idle goes up. Any ideas?

Thanks in advance.
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racer12306
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Re: Pumping brakes causes idle problem

Post by racer12306 » Mon Jan 08, 2024 9:42 am

Could be a vacuum leak since the brakes are vacuum assisted.
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occasional demons
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Re: Pumping brakes causes idle problem

Post by occasional demons » Wed Jan 10, 2024 7:53 pm

It could also be just the air being displaced by the brake booster. If it settles down right after you stop pumping the pedal, it's somewhat normal. The IAC valve is probably opening a bit to compensate.

The IAC is basically a PCM controlled vacuum leak.
Bill
Olha Koba, a psychologist in Kyiv, said that “anger and hate in this situation is a normal reaction and important to validate.” But it is important to channel it into something useful, she said, such as making incendiary bombs out of empty bottles.
2000 Neon MTX swap with '02 R/T PCM
1999 neon coupe 2.4 swap
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