Expert: Van - 2/10/2006

Question
Hello Van,
  I have  a 88 S-10 2X4. If I pump the brake pedal the idle will change up and down as I do so, is it possible the booster is bad?
  Also, I have a code 32 which is very inconsistant, could it be related to the booster? The EGR and EGR switch check out okay.

Thanks,
Jeff

Answer
Hi Jeff,
Actually, as you pump and release like that, it will dump some vacuum when working correctly, but depending on how fast you pump, yours just may use too much.
You should not be able to hear air moving down by the brake pedal if you hold steadily on the pedal.

Van