Idle Sticking ? ?

J

jt98boost

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Aug 2, 2003

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United States <><>

Apr 10, 2006

#1

• Apr 10, 2006

• #1

Sometimes my idle will stick at 2000rpms and will not come down unless I rev the car a few times or if I cut the car off then restart it, I have noticed while it is stuck at 2000rpms I can unplug the Idle air control and the idle will fall back to normal, I tried another IAC a while back but it hung with that one also. Is there anything else it might be or should I try another IAC

 

K

Kilgore Trout

Fried or Broiled ?

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Mar 30, 2005

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Apr 10, 2006

#2

• Apr 10, 2006

• #2

There is a mod called the "copper cap mod" or called the "IAC restrictor plate mod". Try a search for those phrases...

 

J

jt98boost

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Aug 2, 2003

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Apr 10, 2006

#3

• Apr 10, 2006

• #3

Yeah, I might try that copper cap mod, But I have a question on how the IAC works, I notice that when the car is at idle I can pull the hose off of the IAC and it has no vacume on it, but if I rev the car with the hose off the IAC opens and pulls vacume is this normal??

 

Mike97gt

it doe snot

Founding Member

Jan 26, 1999

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the people's republic of massachusetts

Apr 11, 2006

#4

• Apr 11, 2006

• #4

if the engine stays running with the IAC disconnected then you have air entering the motor when it should not.

I would look and see if you have a partialy opened throttle blade. is it the stock TB?

 

jstreet0204

Active Member

Jun 26, 2003

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Winston Salem, NC

Apr 11, 2006

#5

• Apr 11, 2006

• #5

Kilgore Trout said:

There is a mod called the "copper cap mod" or called the "IAC restrictor plate mod". Try a search for those phrases...

Click to expand...

That mod is a "Jerry rig" for those that find it annoying that the eec is programed to drop rpms slowly. Sticking idle is a different problem all together and doing this mod only stands to complicate things until he get the original problem fixed.

 

J

jt98boost

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Apr 11, 2006

#6

• Apr 11, 2006

• #6

Yes, I have a bbk twin 65mm throttle body, this also has a vortech supercharger any ideas?

 

K

Kilgore Trout

Fried or Broiled ?

10 Year Member

Mar 30, 2005

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Apr 11, 2006

#7

• Apr 11, 2006

• #7

Yeah, well... Can't always be right