home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > maintenance & nonperformance

Reply
 
Thread Tools Display Modes
Old 03-18-2021, 06:40 PM   #1
Smckernan
Newbie
 
Join Date: Feb 2021
Default High Idle in Park

My 1992 Volvo 240 GL is idling pretty high in park and I canít figure out how to adjust the idle. So far I have replaced the o2 sensor, cleaned the MAF, replaced the IAC valve, and cleaned the throttle body. I donít see any screw on the throttle body to adjust the idle though. Did this screw just not come on this year of the car? Thanks
Smckernan is offline   Reply With Quote
Old 03-18-2021, 07:46 PM   #2
apachechef
Burnt Sierra Madre
 
Join Date: Jan 2009
Location: Fort Joe Smith, Klendathu
Default

computer controlled. is the throttle cable misadjusted? check to see if throttle plate closes completely
c
__________________
Quote:
Originally Posted by lummert View Post
Dammit, Lummert.
Quote:
Originally Posted by Jesse8931 View Post
Well keep us updated on how your dumbass plan goes.
apachechef is offline   Reply With Quote
Old 03-18-2021, 10:13 PM   #3
fastcomet
Board Member
 
Join Date: Oct 2016
Default

What’s the rpm? I like a higher idle keep oil pressure up. But if it to high can be a pain. Could be a vacuum leak.
fastcomet is offline   Reply With Quote
Old 03-19-2021, 07:35 AM   #4
dbarton
Dejected by Volvo Corp.
 
dbarton's Avatar
 
Join Date: Nov 2002
Location: North of Dallas
Default

LH 2.4 elevates the idle when the shifter is put in drive or reverse. So it's possible its getting an incorrect signal from that. It also elevates idle when the AC is activated.
__________________


'84 242ti, fourth owner, mine since 2003. Always garaged since brand new. Old-school rounds because I like. B21FT, SDS EFI/IGN, TD04HL-15G, T5Z trans with modded 0.73 OD, 3.91 diff, unmodified G80.
Volvo Ambivalence of Volvo Enthusiast Community: prancingmoose.com/#novolvo
Dave's Volvo Page: davebarton.com
240 Mods and Fixes Pages: 240turbo.com/volvo240mods.html
dbarton is online now   Reply With Quote
Old 03-21-2021, 12:16 PM   #5
naterhater
Board Member
 
naterhater's Avatar
 
Join Date: Jul 2013
Location: Portland OR
Default

Quote:
Originally Posted by dbarton View Post
LH 2.4 elevates the idle when the shifter is put in drive or reverse. So it's possible its getting an incorrect signal from that. It also elevates idle when the AC is activated.
Huh, mine doesn't do that.
__________________
"It's probably fine!"
"If you find yourself doing it a second time, do it right this time"
'93 940 Turbo thread:
http://forums.turbobricks.com/showthread.php?t=288116
naterhater is offline   Reply With Quote
Old 03-21-2021, 04:00 PM   #6
bobxyz
Board Member
 
bobxyz's Avatar
 
Join Date: Aug 2014
Location: Boulder CO
Default

There are 3 adjustments:
1) the length of the linkage rod from the cable spool to the pivot arm
2) the throttle plate stop screw position (look carefully at the arm near where the shaft goes into the throttle body)
3) the TPS switch position
See: https://www.volvoclub.org.uk/faq/Eng...itchAdjustment
bobxyz is offline   Reply With Quote
Old 03-21-2021, 05:54 PM   #7
dbarton
Dejected by Volvo Corp.
 
dbarton's Avatar
 
Join Date: Nov 2002
Location: North of Dallas
Default

Quote:
Originally Posted by naterhater View Post
Huh, mine doesn't do that.
Here's the diagnostic for that. It's pin 30 on the LH ECU.
Attached Images
File Type: jpg LH2.4-Pin30.jpg (69.7 KB, 20 views)
dbarton is online now   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 10:13 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.