2nd Generation Specific 1986-1992 Discussion

Idle Control Problems

Old 12-29-2006, 12:00 PM
  #1  
Senior Member
Thread Starter
 
Join Date: Mar 2004
Location: A2, MI
Posts: 453
Default

The PO of my car had performed most of the TB mod (all but grinding down/smoothing out the center bit), and ALL emissions stuff plus BAC is gone, but something must have gotten bent or mis-aligned on re-assembly, cause the throttle doesnt close all the way, making the car idle at ~1500. I can force it closed, then it idles at a decent 800, but the moment you touch the gas, the throttle plate frees up and won't return to the fully closed position. To combat this, I am going to try to plug the hole in the primary throttle plate, and just adjust idle with the return screw. Can anyone see any down-sides to doing it this way? Thanks



This is on an S4 TII
toplessFC3Sman is offline  
Old 12-29-2006, 01:38 PM
  #2  
Senior Member
 
Join Date: Jan 2002
Location: San Jose, CA
Posts: 1,145
Default

make sure your throttle plates arent binding. Seems a bit weird that it will idle at 800, then wont return back after you give it gas. You can manually adjust the idle with the throttle stop screw. But keep in mind, you are using the stock ecu you have to re-adjust the tps after this.



stock ecu or haltech?
cymfc3s is offline  
Old 12-29-2006, 02:40 PM
  #3  
Senior Member
Thread Starter
 
Join Date: Mar 2004
Location: A2, MI
Posts: 453
Default

N338 ecu, (88 'vert), will be going megasquirt in the next few months. The odd thing is that the throttle works fine when not on the car, it snaps back into place etc, but once its on the car, it doesnt return fully (unless you let off the gas very quickly). For this reason, i think that either the throttle cable is binding as well, or something is getting in the way or rubbing on the end of one of the throttle shafts
toplessFC3Sman is offline  
Old 12-29-2006, 11:39 PM
  #4  
Senior Member
Thread Starter
 
Join Date: Mar 2004
Location: A2, MI
Posts: 453
Default

Found it... the butterfly valve pivot rod was slightly bent, causing it to bind at the end of it's travel. When I unbent it (wrapped a giant wire around it and tugged), it worked great.
toplessFC3Sman is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Dev
2nd Generation Specific
5
05-29-2006 04:57 PM
Welsh Dan
3rd Generation Specific
3
12-17-2005 11:45 AM
miltstheman
RX-7 & RX-8 Parts For Sale & Wanted
2
12-16-2004 08:32 PM
djgiantrobot
ECU Discussions
1
12-04-2003 05:47 PM
TeamChin
RX-7 & RX-8 Parts For Sale & Wanted
0
02-24-2003 01:05 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Quick Reply: Idle Control Problems


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.