Weird Idle...Help plz?
Thread Starter
Registered User
Joined: Oct 2003
Posts: 65
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From: Ft. Worth, TX
Weird Idle...Help plz?
Well this morning all of a sudden my car started to idle funny...hummm
Ill let the car warm up and what not and the RPMs jump from like 1k to 2k on and off on and off on and off...i dunno why? It never settles to 900rpms like it used to just idle fine at until today? Anybody know what this could be from?
Thanks
-Jason
Ill let the car warm up and what not and the RPMs jump from like 1k to 2k on and off on and off on and off...i dunno why? It never settles to 900rpms like it used to just idle fine at until today? Anybody know what this could be from?
Thanks
-Jason
Thread Starter
Registered User
Joined: Oct 2003
Posts: 65
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From: Ft. Worth, TX
Wasnt to bad...a few days before it was colder, and i would have expected this. But it was around 70 this morning so i didnt think anything of it. But never the less i been driving the car all day and its been doing the same thing. Even when the car is rather warm. So what could be the problem?
I
Joined: Jan 2001
Posts: 56,525
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From: Westside til I die
If it continues, check for:
Vacuum leaks
Idle adjustment screw
IAC valve
Vacuum leaks
Idle adjustment screw
IAC valve
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2015 Ford Mustang GT Fastback - Ingot Silver - 6M - Performance Package - Gibson Catback, JLT CAI, FR 47lb injectors, BAMA E85 tune, Eibach Sportline, BMR wheel hop kit, UPR oil separator, Steeda shifter bushing/bracket
Team B.O.B.® - Ballaz on a Budget
2015 Ford Mustang GT Fastback - Ingot Silver - 6M - Performance Package - Gibson Catback, JLT CAI, FR 47lb injectors, BAMA E85 tune, Eibach Sportline, BMR wheel hop kit, UPR oil separator, Steeda shifter bushing/bracket
Team B.O.B.® - Ballaz on a Budget
I miss my 93 VTEC Lude :(
Joined: Sep 2003
Posts: 531
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From: South Jersey
This happened in my Lude. It was the Air Idle Control Valve aka Idle Air Control valve. or as dubster said the IAC Valve 
The other two he mentioned are a possibility. Hope its a vaccuum leak. IAC's can be a little on the pricey side especially after you add labor. I had to cause i had no idea how to take mine off.
The other two he mentioned are a possibility. Hope its a vaccuum leak. IAC's can be a little on the pricey side especially after you add labor. I had to cause i had no idea how to take mine off.
Senior Member
Joined: Apr 2001
Posts: 8,232
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From: Concord, NC
Originally posted by Shore 96 Teg
This happened in my Lude. It was the Air Idle Control Valve aka Idle Air Control valve. or as dubster said the IAC Valve The other two he mentioned are a possibility. Hope its a vaccuum leak. IAC's can be a little on the pricey side especially after you add labor. I had to cause i had no idea how to take mine off.
This happened in my Lude. It was the Air Idle Control Valve aka Idle Air Control valve. or as dubster said the IAC Valve
The other two he mentioned are a possibility. Hope its a vaccuum leak. IAC's can be a little on the pricey side especially after you add labor. I had to cause i had no idea how to take mine off.
The deer had to die!
Joined: Jun 2002
Posts: 39,835
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From: Fussa, Japan
most likely IAC valve. They are one of the most faulty pieces on a Honda motor. My friend's old 92 Prelude went through 2 OEM IAC valves in 2 years. Luckily mine hasn't gone yet (160K miles)....but i clean it every 6 months.
