S2000 Under The Hood S2000 Technical and Mechanical discussions.

Idle stumbling and revs sticking when decel.

Thread Tools
 
Old 06-19-2009, 03:40 PM
  #11  
Registered User

 
Kirpich's Avatar
 
Join Date: Jan 2008
Posts: 932
Likes: 0
Received 1 Like on 1 Post
Default

How about the cleaning procedure for Intake Idle Control Valve?
Old 06-19-2009, 05:24 PM
  #12  
Former Sponsor

Thread Starter
 
Moddiction's Avatar
 
Join Date: Oct 2007
Location: Mooresville, NC
Posts: 28,698
Received 38 Likes on 30 Posts
Default

I'm gonna try cleaning and testing etc but first just wondering if anyone knows what could cause it more when the ac is on.
Old 06-24-2009, 09:48 PM
  #13  
Former Sponsor

Thread Starter
 
Moddiction's Avatar
 
Join Date: Oct 2007
Location: Mooresville, NC
Posts: 28,698
Received 38 Likes on 30 Posts
Default

Damn idle hasn't stuck again so can't try pulling the pedal up to test. The stumbling and bogging down/revs dropping has only happened when the ac is on. If it starts and I then turn the ac off the idling gets normal.
Would the likely issue still be the tps or map sensor?
Driving back up to ny shortly so would love to have this issue fixed by then.
Old 06-25-2009, 07:53 AM
  #14  

 
s2kobsession's Avatar
 
Join Date: Apr 2007
Location: Lower Mainland
Posts: 5,874
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Deception,Jun 7 2009, 10:54 AM
when the revs stick at 4k, put your foot under the gas pedal and pull up. If the RPM's drop to normal its a mechanical issue (throttle cable/ throttle body)
The throttle cable pulls the butterfly valve open on the throttle body when you push down on the gas pedal so how is pulling up on the gas pedal with your foot going to do anything? All that is going to do is create more slack in the cable assuming the butterflyvalve is stuck.
Old 06-25-2009, 08:13 AM
  #15  
Former Sponsor

Thread Starter
 
Moddiction's Avatar
 
Join Date: Oct 2007
Location: Mooresville, NC
Posts: 28,698
Received 38 Likes on 30 Posts
Default

I'm thinking that the throttle got stuck because a while ago I painted the area where the cable attached since it was real
Nasty and rusty and all. Probably during long drives in the heat the paint got a bit sticky and stuck a couple times. Ac idle issue is the problem now.
Old 07-08-2011, 08:24 AM
  #16  
Registered User

 
whippets2k's Avatar
 
Join Date: Oct 2008
Posts: 103
Received 3 Likes on 3 Posts
Default

Originally Posted by Moddiction
I'm thinking that the throttle got stuck because a while ago I painted the area where the cable attached since it was real
Nasty and rusty and all. Probably during long drives in the heat the paint got a bit sticky and stuck a couple times. Ac idle issue is the problem now.

Wondering if you got this AC idle issue fixed? Any solution?
Old 07-08-2011, 09:39 AM
  #17  
Moderator
Moderator
 
Billman250's Avatar
 
Join Date: Jul 2002
Location: Long Island, New York
Posts: 22,124
Received 1,403 Likes on 840 Posts
Default

Sticking IAC valve will cause a high idle.

If you have the proper tool bit (you wont, you will have to buy it. its a five point torx called a pentacle bit...avail only online or tool trucks) you can take the motor portion off the IAC valve. There is a little shaft in the IAC that turns on tiny bearings. you will find this shaft does not turn freely.

Clean it out, and spray it with WD40. get that shaft to spin freely.

Enjoy your super smooth idle.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
J_s2
S2000 Under The Hood
6
07-29-2019 06:13 AM
drsgfire
S2000 Under The Hood
2
07-14-2011 08:56 AM
tlogic
Texas - Houston S2000 Owners
12
11-06-2009 11:03 AM
tdli
S2000 Under The Hood
14
12-10-2008 10:10 PM
djvtecs2k
S2000 Talk
21
01-08-2002 11:42 AM



Quick Reply: Idle stumbling and revs sticking when decel.



All times are GMT -8. The time now is 12:17 AM.