2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Jumping Idle?

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Old Jan 6, 2003 | 10:06 PM
  #1  
1987RX7guy's Avatar
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Eat Rice Don't Drive it.
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From: Laredo, Tx
Jumping Idle?

I took off the stock intake and the a/c system and now my idle is jumping it is at about 1400rpm and jumps to 1700rpm if I try to lower it the car will stall if I don't hold it a 1500rpm(basically any stop light) I also changed some of my vac lines to silicone but I am almost positive that I did it correctly and did not leave any open. Any Ideas please. Thanks for any help provided.
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Old Jan 6, 2003 | 10:19 PM
  #2  
Amur_'s Avatar
Refined Valley Dude
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From: Kitchener, Ontario (Hamilton's armpit)
It's a vacuum leak. Maybe one of the old lines is leaking. You may have bumped one when you did all that.

Grab a can of carb cleaner and spray (more like soak) each line one at a time. The idle will change when you spray the leaking vac line.

And next time SEARCH. This is arguably the most commonly asked (and answered) question on the Forum.
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