2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Idle, and mix adjust

Thread Tools
 
Search this Thread
 
Old Aug 6, 2001 | 03:10 AM
  #1  
TonyTurboII's Avatar
Thread Starter
Glock Lover
Tenured Member 20 Years
 
Joined: Mar 2001
Posts: 2,223
Likes: 0
From: Currently residing in St Charles, MO
Idle, and mix adjust

How should I adjust the Idle screw? The car seems to run crappy (bouncy idle). Also, the idle mix screw is set all the way to rich, I dont know what it should be. Anyone wanna tell me how to adjust the TPS?
Reply
Old Aug 6, 2001 | 10:36 PM
  #3  
TonyTurboII's Avatar
Thread Starter
Glock Lover
Tenured Member 20 Years
 
Joined: Mar 2001
Posts: 2,223
Likes: 0
From: Currently residing in St Charles, MO
So maybe I should get a S-AFC? Arent those things expensive?
Reply
Old Aug 6, 2001 | 11:13 PM
  #4  
Greys 10th's Avatar
Full Member
Tenured Member 10 Years
 
Joined: Apr 2001
Posts: 207
Likes: 0
From: Leeds, Al, U.S.
400 bucks at most dealers or whatever...try th erx7 store on the forum..i believe it is at the top of the forum page on every page. I think he seel them about 100 bucks less.
later
Reply
Old Aug 6, 2001 | 11:48 PM
  #5  
Chris Ng's Avatar
I'm with stupid -----^
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 994
Likes: 0
From: Calgary, AB, Canada
Buying a s-afc in order to band-aid a bad idle... that's one of the biggest wastes of money I've ever heard..
Anything that the s-afc can do improve your idle, you can do yourself using the correct procedure and the idle mixture screw..

In fact, if you need a s-afc to get proper idle, then your car is screwed with to begin with...

idle bounce is usually related to the TPS being misadjusted.. there are several web pages that will show you how to adjust it properly .. the easiest way is shown on Ted's site http://www.k2rd.com/FC3S/HOWTO/TPS/tps.html

once you have the TPS set, then adjust your idle mixture correctly .. jumper the initial set connector with a peice of wire.. adjust the screw on the BAC valve to give you 750 rpm, then adjust your idle mixture screw to give you the highest idle.. use the BAC to adjust the idle back to 750rpm.. disconnect the jumper.. your idle should bounce a few seconds then come down to a normal idle ...

If you still can't get idle set correctly using this method, then there is something else that is out to lunch with your motor.. vac leak perhaps, improper throttle stop screw setting etc...
Reply
Old Aug 7, 2001 | 02:47 PM
  #6  
Bean's Avatar
Junior Member
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 18
Likes: 0
From: AL
ok i'm having trouble with my idle so i'll ask some questions here too

in the Haynes manual that I have... it doesn't mention the mixture screw...

where is it? i can't find it

and where is the initial set connector?

thx
Reply
Old Aug 7, 2001 | 05:08 PM
  #7  
TonyTurboII's Avatar
Thread Starter
Glock Lover
Tenured Member 20 Years
 
Joined: Mar 2001
Posts: 2,223
Likes: 0
From: Currently residing in St Charles, MO
This is great info, im going to go put it to use.
EDIT: Great info meaning the write up on Teds page.

Last edited by TonyTurboII; Aug 7, 2001 at 05:28 PM.
Reply
Old Aug 7, 2001 | 05:15 PM
  #8  
TonyTurboII's Avatar
Thread Starter
Glock Lover
Tenured Member 20 Years
 
Joined: Mar 2001
Posts: 2,223
Likes: 0
From: Currently residing in St Charles, MO
Originally posted by Bean
ok i'm having trouble with my idle so i'll ask some questions here too

in the Haynes manual that I have... it doesn't mention the mixture screw...

where is it? i can't find it

and where is the initial set connector?

thx
The idle mixture screw is by the boost pressre sensor, mounted to the passanger front shock tower. Its recessed in plastic, and has a "L" and a "R"on it. The initial set connector is on the driver side fender, next to the battery. Its by a green 6 prong plug. It is (the initial set connector) a green 2 pronged plug.
Reply
Old Aug 7, 2001 | 05:23 PM
  #9  
Bean's Avatar
Junior Member
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 18
Likes: 0
From: AL
thx i'll be working on my idle today when i get home
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
DerpyToast
2nd Generation Specific (1986-1992)
14
Nov 23, 2024 05:19 PM
barkz
Power FC Forum
37
Nov 21, 2020 09:34 AM
Jeff20B
1st Generation Specific (1979-1985)
73
Sep 16, 2018 07:16 PM
The1Sun
New Member RX-7 Technical
5
Sep 15, 2015 04:45 PM
The1Sun
1st Generation Specific (1979-1985)
0
Sep 7, 2015 10:21 PM




All times are GMT -5. The time now is 08:54 PM.