Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: jack68 on 30 December 2008, 20:56:42

Title: Not sure whats happening
Post by: jack68 on 30 December 2008, 20:56:42
Firstly good evening all and i hope you had a great Christmas.  I have just put the miggy through it's MOT and after picking it up from a mates house who assisted me i noticed that the temp gague was not moving, i looked through the computer display and noticed it was apparently 6 degrees outside.  The aircon doesn't seem to be working properly either.  I was wondering if the MOT station might've knocked something i.e. a wire or is it the thermostat thats gone.  I just don't believe in coincidence.  The car is a 2.6 on a 52 plate before you all ask.  Cheers in advance and i hope you all have a great 2009.

Jack  ::)
Title: Re: Not sure whats happening
Post by: ste_bla on 30 December 2008, 21:08:56
Dont most cars stop aircon working if outside temp is below 8deg?
Title: Re: Not sure whats happening
Post by: VXL V6 on 30 December 2008, 21:09:30
4deg on the Omega.
Title: Re: Not sure whats happening
Post by: jack68 on 30 December 2008, 21:14:10
Sorry should have read 68 degrees and it was about -3 outside today.
Title: Re: Not sure whats happening
Post by: VXL V6 on 30 December 2008, 21:19:11
Sounds like your outside temp sensor has become dislodged and is probably touching the radiator. On a facelift it's clipped into the lower grill in the centre of the bumper.... well at least it should be!

Title: Re: Not sure whats happening
Post by: jack68 on 30 December 2008, 21:21:30
Thanks for that suggestion, do you think that would make the brain of the car thinks it is very hot outside and therefore keep the engine running cold?
Title: Re: Not sure whats happening
Post by: TheBoy on 30 December 2008, 21:31:43
cold running will be stat
Title: Re: Not sure whats happening
Post by: jack68 on 30 December 2008, 21:34:16
The aircon will blow really hot or be cold but nothing in between.  The gague has only not been working since MOT so i thought it might be linked.  Do you think the the Stat has gone? and if so could you tell me where it is and how easy to change etc.
Title: Re: Not sure whats happening
Post by: MutantCav on 30 December 2008, 23:40:58
On v6 thermostat is under the plenum/fuel injectors/lower divider
Title: Re: Not sure whats happening
Post by: jack68 on 31 December 2008, 12:32:51
Right here we go, i have changed the outside temp sensor and this has cured the temp reading and also this has sorted the climate control out.  The engine temp is still not moving though.  I ran the car this morning and all the pipes seemed to be running at the same temperature and the fans also cut in and out as they should.  I know the answer but i'm assuming that this would only leave the stat?  If anyone has pictures of where it is and also pictures of what i need to remove i would be grateful.  Thanks again for the help. >:(
Title: Re: Not sure whats happening
Post by: Andy B on 31 December 2008, 16:42:52
Quote
Right here we go, i have changed the outside temp sensor and this has cured the temp reading and also this has sorted the climate control out.  The engine temp is still not moving though. ...... 

The gauge is fed from a diffent sensor right at the back of the engine. You'll find 2 of them, one has just one terminal - this talks to the gauge & one with a blue/grey plug and has 2 terminals - this talks to the engine ECU. If your fans are running as they should ie switching on & off I would think that either the wire has come off the sender or your gauge is fubar'd. To test the gauge, ground wire that goes/should go to the sender, and if the guage is OK then it will read all the way to HOT if it doesn't then it could be the sender, or the dash not properly seated - not making a proper connection on the multipin plug behind it.
Title: Re: Not sure whats happening
Post by: sneakypenguin on 01 January 2009, 02:28:15
any ideas where the outside temp sensor is on a mini/pre-facelift (don't know which ne mine is lol) cos the temp is way off, reading 35c earlier when it was blooming cold lol.

many thanks

sp
Title: Re: Not sure whats happening
Post by: jack68 on 01 January 2009, 14:16:21
Andy,
        thanks for the info.  I had a look and one of the plugs appeared to have come detached.  Not sure if it was knocked when they did the MOT or not.  All working well now.  Once again cheers for all the advice.

JACK

 :)
Title: Re: Not sure whats happening
Post by: Andy B on 01 January 2009, 16:05:02
Quote
Andy,
        thanks for the info.  I had a look and one of the plugs appeared to have come detached.  Not sure if it was knocked when they did the MOT or not.  All working well now.  Once again cheers for all the advice.

JACK

 :)

Good! I wonder what they were looking for to knock the wire off?  :-?
I like the cheap easy fixes!  :y  :y
Title: Re: Not sure whats happening
Post by: Andy B on 01 January 2009, 16:07:53
Quote
any ideas where the outside temp sensor is on a mini/pre-facelift (don't know which ne mine is lol) cos the temp is way off, reading 35c earlier when it was blooming cold lol.

many thanks

sp

Bottom edge of the front bumper, towards the passenger side. They're only around £6 for a new sensor.

Mini face lift has radio controls on the steering wheel, solid head restraints, fog lights telltales on the dash rather than the switch itself ......... and other things ;)  :y