Bullitt 01 bullit is idling to high

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cezr75

New Member

Aug 27, 2009

9

0

0

Sep 21, 2009

#1

• Sep 21, 2009

• #1

hey everyone,
I recently replaced a faulty iac valve on my bullit. it ran fine for a couple of weeks. recently it started idling at 900 rpms where before it would idle at around 750 rpms. i took the iac vale back to the dealer and exchanged it. still is idling to high. i also changed the tps sensor and it didnt help. why would it suddenly be idling higher now? any input would be apreciated. thanks everyone.

 

snipercop

New Member

Oct 22, 2009

3

0

1

Indianapolis, IN

Oct 23, 2009

#2

• Oct 23, 2009

• #2

Do you have a tuner on the car like a Predator that you can monitor your motor? It sounds like you definitely have a vacuum leak somewhere.

 

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CopNaStang

Member

Aug 19, 2009

20

3

13

Dec 12, 2009

#3

• Dec 12, 2009

• #3

Make sure all your connections on your intake system are tight, etc. I think my Diablo, itself, made my car idle higher than normal.

 

DragonBullitt

New Member

Dec 22, 2009

3

0

1

Florida

Dec 22, 2009

#4

• Dec 22, 2009

• #4

what mods do you have?

 

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bullitt1939

Member

Jul 18, 2009

58

0

6

Dec 8, 2010

#5

• Dec 8, 2010

• #5

Might be your TPS (throttle body position sensor). I have had to change mine a few times, but mine was idling at 2-3k. Hope this helps.

 

Bullitt322

New Member

Apr 24, 2011

11

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0

Apr 25, 2011

#6

• Apr 25, 2011

• #6

snipercop said:

It sounds like you definitely have a vacuum leak somewhere.

Click to expand...

I'd agree. Sounds like a vacuum leak. Where did you get the new IAC? I know there are definite issues with aftermarket stuff. Is it making any noises at idle like a buzz or honking?