home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > maintenance & nonperformance

Reply
 
Thread Tools Display Modes
Old 10-01-2017, 11:52 AM   #1
jos 240
Newbie
 
Join Date: Oct 2017
Location: Limburg (Netherlands)
Default B230FT idle saga...

Dear forum members,

As a Volvo enthousiast I have been driving RWD Volvo's for many years now.

2,5 years ago I bought a 240 1993 station wagon with a B230FT engine. I have been able to do the most of the repairs and maintenance myself, but now I am stuck.

6 months ago I started the search to solve the high idling. Since the problem is intermittent it is quite difficult to to pinpoint the cause. ( Idle goes up to 1600 - 1800 rpm than drops to 1200 and goes up to 1500 again and so on)

What I did so far (in random order):

1. Cleaned the throttle body, multiple times
2. Replaced the throttle body ( because there was some play on the butterfly) with a second hand one & checked the settings etc.
3. Replaced the TPS and set it to click at the right moment.
4. Cleaned all the contacts of all sensors/idle motor etc.
5. Replaced the FPR with a brand new one
6. Tried two different AFM's with no result
7. No fault codes during this half year
8. Replaced the ECU cooling sensor
9. Replaced the IAC with a new one
10. Checked for air leaks several times ( also checked by my local garage and Volvo specialist specializing in the 240 model), but found no leaks.
11. Cleaned the IAC
12. The TPS clicks at the right moment and throttle body is closed etc.

Bosch LH 2.4.

I have found a lot of advice / tips when searching this great forum, but I just cannot fix this problem

To be honest you are my last hope to fix this problem.

Jos ( Netherlands - Limburg)
jos 240 is offline   Reply With Quote
Old 10-01-2017, 02:14 PM   #2
petiww
Board Member
 
petiww's Avatar
 
Join Date: Aug 2011
Location: Hungary
Default

Quick thoughts:
Do you have a charcoal canister? Plugging the ports?

Have you tried plugging the vacuum booster port?

Do you have proper speedo signal from the cluster?

Have you tried swapping ecus?
__________________
1980 Brown 244 GL
petiww is offline   Reply With Quote
Old 10-01-2017, 08:38 PM   #3
hiperfauto
The Librarian
 
hiperfauto's Avatar
 
Join Date: Nov 2011
Location: So Cal
Default

Have you tried using control function 2 of the OBD to test the TPS and wiring?

http://www.volvowiringdiagrams.com/v...20Complete.pdf
hiperfauto is offline   Reply With Quote
Old 10-01-2017, 08:59 PM   #4
Vincent Gagnon
Board Member
 
Vincent Gagnon's Avatar
 
Join Date: Sep 2015
Location: Golden, BC
Default

Quote:
Originally Posted by jos 240 View Post
3. Replaced the TPS and set it to click at the right moment.
I had the exact same problem after ****ing around with the TPS. I also did the: "click at the right moment" thing.

Just for fun, get the screws loose on the TPS without removing them (just so you can move the TPS).

Start the car.

Try to move it to see if it influence the idle.

Good luck.
__________________


Member of TBCCS


Vincent Gagnon is offline   Reply With Quote
Old 10-05-2017, 07:13 AM   #5
jos 240
Newbie
 
Join Date: Oct 2017
Location: Limburg (Netherlands)
Default

Thank you for the suggestions & help!


@Petitww:

1.I will plug the ports ( on the bottom of the cannister you mean?). Can I do that also when idle is ok and can I drive the car safely than? Because it is intermittant this problem sometimes occurs once a week / 3 times a day etc.
2. I will plug the vacuum booster port as well.
3. How can I test that the signal from the speedo is ok? I do not know where the the wires are for this signal.
4. Did not swap the ECU yet

@Hiperfauto:
I will try that one for sure.

@Vincent:
I will try this.
jos 240 is offline   Reply With Quote
Old 10-05-2017, 09:47 AM   #6
soclosenotnear
Board Member
 
Join Date: Oct 2011
Location: summerville, south carolina
Default

I have an identical issue. It has changed slightly over the last couple years between all the work I've done but nothing has solved the issue.

http://forums.turbobricks.com/showthread.php?t=319459
__________________
check my feedback here
soclosenotnear is offline   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 09:07 AM.

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