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4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

just installed o/r x pipe and now it idles bad

Old 08-07-2008, 08:26 PM
  #1  
whiterabit998
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Default just installed o/r x pipe and now it idles bad

it idles at like 2k and sometimes it goes down... ???? i haven't made o2 eliminators yet... sould it still be idleing so high?
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Old 08-07-2008, 09:24 PM
  #2  
02GTman
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Default RE: just installed o/r x pipe and now it idles bad

I just did the same thing with no MILs and it idles fine.
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Old 08-07-2008, 10:35 PM
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califas_1987
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Default RE: just installed o/r x pipe and now it idles bad

Did you disconect the battery? I disconected mine when I put mine in just in case i hit some of the starter wires. If you did, just let the car idle for ~5 minutes so it can readjust itself.
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Old 08-07-2008, 10:43 PM
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cassimus
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Default RE: just installed o/r x pipe and now it idles bad

from what i am told by a few shops the ruffness is mainly caused by your 02's going crazy without the cats
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