Welcome to the 2GNT Forum!
Home Site Background Info & Specs Mods & Tech Info CAPS Part Reviews Donate 2GNT Stickers
Search Printer-friendly copy 0 Users in Chat
Top 2GNT Technical Performance/Engine topic #101754
View in linear mode

Subject: "High idle afer rebuild, I have searched and cant find problem like this...." Previous topic | Next topic
EclipseGS45150Nov-03-06 04:15 PM
Member since Oct 27th 2006
10 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#101754, "High idle afer rebuild, I have searched and cant find problem like this...."


          

Ok, I just got finished rebuilding my 420a. Timing is set to TDC, I did double check it. It starts fine but idles at 1000-1100, then climbs to 2500rpm and stays there. I checked the tb, and if I cover the opening completely it stalls. The is a hole on the bottom of the tb inside the intake hook up which I beleve goes to my IAC. When I put my finger over this hole is starts to die but right before it stalled I moved my finger and it stayed at 1100 rpm, first question is, is the hole going to the IAC? Or is it to another sensor? Next is with the 1000-1100 idle, I have high compression pistons, would this make the idle change to be that high or would that be a vac leak? I have searched but cant find anything in the forums like my problem. Please help if you can, I also have no Idea how to check for vac leaks, I read about the gauge you can get but I dont have a lot of extra cash, any way to check it with out the gauge?

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

Replies to this topic

Moderatorcs82685Nov-04-06 02:23 AM
Donating 2GNT member
2007 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#101756, "RE: High idle afer rebuild, I have searched and cant find problem like this...."
In response to Reply # 0
 Nov-04-06 02:28 AM by cs82685



          

Originally posted by EclipseGS45150
There is a hole on the bottom of the tb inside the intake hook up which I beleve goes to my IAC. When I put my finger over this hole is starts to die but right before it stalled I moved my finger and it stayed at 1100 rpm, first question is, is the hole going to the IAC?


Yes, if your car was down for a while, you may want to just unbolt the TB, and clean the IAC and its passage out. It's pretty simple There's a write-up for this on the main page under the maintenance section.

Originally posted by EclipseGS45150
Next is with the 1000-1100 idle, I have high compression pistons, would this make the idle change to be that high or would that be a vac leak? I have searched but cant find anything in the forums like my problem.


This IDK someone else could help out I'm sure

Originally posted by EclipseGS45150
I also have no Idea how to check for vac leaks, I read about the gauge you can get but I dont have a lot of extra cash, any way to check it with out the gauge?


I believe you can just spray your vaccuum lines with carb cleaner and if there is a leak when you spray it, there will be a noticeable change in the idle

Also if you really don't want to actually check your vac lines, you can just replace with all new since they're cheap


I contributed to the Wiki!
EVO IX - just a really expensive boost gauge and a K&N air filter
96 Eclipse RS -awaiting registration and inspection
95 Eclipse GS - parts car
Mods/Profile - http://www.2gnt.com/index.php?d=cs82685

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

    
EclipseGS45150Nov-04-06 11:01 AM
Member since Oct 27th 2006
10 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#101758, "RE: High idle afer rebuild, I have searched and cant find problem like this...."
In response to Reply # 1

          

I was thinking about replacing them also, do you think the silicone type you can get from autozone will do just as good a job?

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

    
BlackMagicNov-04-06 11:08 AM
Donating 2GNT member
1243 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#101759, "RE: High idle afer rebuild, I have searched and cant find problem like this...."
In response to Reply # 1



          

Originally posted by cs82685
Originally posted by EclipseGS45150 There is a hole on the bottom of the tb inside the intake hook up which I beleve goes to my IAC. When I put my finger over this hole is starts to die but right before it stalled I moved my finger and it stayed at 1100 rpm, first question is, is the hole going to the IAC?
Yes, if your car was down for a while, you may want to just unbolt the TB, and clean the IAC and its passage out. It's pretty simple There's a write-up for this on the main page under the maintenance section.
Originally posted by EclipseGS45150 Next is with the 1000-1100 idle, I have high compression pistons, would this make the idle change to be that high or would that be a vac leak? I have searched but cant find anything in the forums like my problem.
This IDK someone else could help out I'm sure
Originally posted by EclipseGS45150 I also have no Idea how to check for vac leaks, I read about the gauge you can get but I dont have a lot of extra cash, any way to check it with out the gauge?
I believe you can just spray your vaccuum lines with carb cleaner and if there is a leak when you spray it, there will be a noticeable change in the idle Also if you really don't want to actually check your vac lines, you can just replace with all new since they're cheap


For the high idle it sounds like you have a vacuum leak, check and recheck all hoses and connections and do a leak test.

_____________________________________


http://www.dsmregistry.com/detail.php?carid=1133
*form follows function*

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

        
EclipseGS45150Nov-05-06 10:15 AM
Member since Oct 27th 2006
10 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#101772, "RE: High idle afer rebuild, I have searched and cant find problem like this...."
In response to Reply # 3

          

I checked the vac and no leaks, I found the wires on the CTS needed redone so I did that and now it idles about 1000, but if I give it gas then let go it slowly goes down from 2000 and almost dies???

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

            
TeamMichael_97RSNov-07-06 02:38 PM
Donating 2GNT member
5866 posts, 		Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#101796, "RE: High idle afer rebuild, I have searched and cant find problem like this...."
In response to Reply # 4

          

What compression pistons? What else did you do upgrade with the rebuild?

Exile Racing Technologies
http://www.exileracing.com
Go that way, really fast, if something gets in your way... turn. I was too lazy to do it myself.

  
Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

Top 2GNT Technical Performance/Engine topic #101754 Previous topic | Next topic
   

Powered by DCForum+ Version 2.2
Copyright 1997-2005 DCScripts.com, Copyright 2005-2026 2gnt.com
Generated in 0.067 seconds, executing 24 queries.