Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > 200 Series General

Notices

200 Series General Forum for the Volvo 240 and 260 cars

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

'91 240 issues

Views : 1068

Replies : 22

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Apr 26th, 2019, 14:40   #21
Bugjam1999
Master Member
 

Last Online: Yesterday 21:34
Join Date: Nov 2012
Location: London and Cambridge
Default

Quote:
Originally Posted by Clifford Pope View Post
Haynes gives directions for testing the terminals on the TPS. I think on this model it's only a micro-switch, it only became a variable resistance with LH 3 ?
Correct- it’s just a micro switch for 2.4lh. Although worth checking, the OP said it passed the test so it should be fine.

And as I understand the system it won’t affect the engine apart from at idle, so it’s not the cause of problems at speed.

Definitely worth cleaning out the throttle body etc if it has tan been done recently.

Cheers
Bugjam1999 is offline   Reply With Quote
Old Apr 27th, 2019, 23:03   #22
Grahambharper
New Member
 

Last Online: Aug 7th, 2019 04:21
Join Date: Mar 2019
Location: Houston, TX
Default

I took it out for a drive today and it is now slower and backfires. If I clamp the return line it still speeds up.
I cleaned the throttle body about the same time I changed the o2 sensor, any other thoughts?
Grahambharper is offline   Reply With Quote
Old Apr 28th, 2019, 11:44   #23
Clifford Pope
Not an expert but ...
 

Last Online: Yesterday 10:11
Join Date: Dec 2001
Location: Boncath
Default

Quote:
Originally Posted by Grahambharper View Post
I have also done a valve adjustment and replaced the hushers and checked the timing.

That was presumably the ignition timing, not the valve?

Could the timing belt be worn or not tensioning, and it has jumped some teeth on a sprocket?

Engine earth lead clean? It's a basic point, but as I recently learned, a poor earth causes all sorts of trouble.
Clifford Pope is offline   Reply With Quote
Reply


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

Forum Jump


All times are GMT +1. The time now is 03:16.


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.