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89 930.
Benny771's Avatar
Join Date: Jul 2008
Location: Canada Ontario
Posts: 783
Question car idle's fine now (cold)? WTH !!

Not that im not happy(car was idleing low and rough (500rpm)when cold).
But i hate not finding out what was wrong.

I changed 3 things only.

1. put pressure on the intercooloer around the up-pipe once (k27 with adapter). possible leak/not seated right???

2. changed the O2 sensor (sorta did that first and didnt make a diff. on as 10 min run)

3. I have a cone air filter (changed from stock). The rich/lean screw was pushed to the right(firm). Cut a notch in the filter so it is straight up.

After them three, car starts right up and idle's like new.

Any ideas in what the issue was??

Old 08-26-2011, 06:11 PM
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mark houghton's Avatar
Join Date: Jul 2008
Location: Central Washington State
Posts: 3,859
Yeah, because of improper installation of your cone filter your mixture adjusting screw was pushing down on the damn metering arm, making it rich. Solved....

Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.

Last edited by mark houghton; 08-26-2011 at 07:20 PM..
Old 08-26-2011, 07:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)

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