high idle after bypassing smog

T

tstang21

Member

Apr 14, 2008

219

0

16

Dec 3, 2008

#1

• Dec 3, 2008

• #1

as you all know, i bypass my smog pump. when the car is on a cold start, the idle sits normal for a few seconds, CEL blinks on and then it jumps up to around 1500 rpms for about 5 secs and drops back to normal. the CEL disappears. i heard it was timing that needs to be set for it to know its operating under a shorter belt could it be the IAC that needs to be cleaned or replaced ?


thanks

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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Dec 3, 2008

#2

• Dec 3, 2008

• #2

Pull the code. It should not be an issue related to your smog pump bypass.

Good luck.

 

Yellow302

Member

Mar 2, 2003

789

2

19

NJ

Dec 3, 2008

#3

• Dec 3, 2008

• #3

air pump pumps air into the back of the e7 heads and down into the mid pipe, did you cap both off?

 

T

tstang21

Member

Apr 14, 2008

219

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16

Dec 4, 2008

#4

• Dec 4, 2008

• #4

i didnt remove the smog pump whatsoever until i get a delete kit. for now im just bypassing it. i didnt pull any codes as yet. the car runs good but when its on a cold start, this happens for a few seconds. i tried adjusting my idle screw. somehow im believing it could be the IAC. but ill replace it once i get my TB installed. could it be timing related ?

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

33

129

Dec 4, 2008

#5

• Dec 4, 2008

• #5

Fix this issue before you start making adjustments or replacing parts. Otherwise your variables go higher.

If it only does it for a few seconds and otherwise it idles fine, then get that code pulled. It's probably not a hard adjustment (like your idle screw) if it only does acts funny upon rare occasion. Getting codes only takes a few mins.

Good luck.

 

revhead347

Apparently my ex-husband made that mistake.

20+ Year Stangneter

Jun 14, 2004

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Acworth, GA

Dec 4, 2008

#6

• Dec 4, 2008

• #6

Idling high for a few seconds doesn't sound like an issue to me. I would just drive it like that and except it.

Kurt

 

T

tstang21

Member

Apr 14, 2008

219

0

16

Dec 7, 2008

#7

• Dec 7, 2008

• #7

FIXED IT ! i replace the coil w/ a new 1 and did some adjustments. i dont know if its thatbut i dont know. actually i felt a little difference by bypassing the pump.

thanks