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1988 Pontiac Fiero Vaccuum leak, what exactly is it?

Tiny
MRFIEROTUNER
  • MEMBER
  • 1988 PONTIAC FIERO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
There is a black tube right under the intake by the throttle body, and my engine idles at 3000 RPM when it is open and stalls when it is blocked off. I believe it is a vaccuum line, but I dont remember. Anyone know what this is and where it connects to?
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Thursday, February 5th, 2009 AT 6:08 PM

1 Reply

Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
It's supposed to be connected to the bottom of the throttle body, it's the line for the idle air control valve.

It actually goes into the side of the throttle body, down low. You'll want to removed the throttle body, so you can slide it onto the tube.
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Friday, February 6th, 2009 AT 4:35 PM

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