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displaying posts 1 to 10 of 10
| Author | Subject: Coolant temp sensor query |
 :: blade ::
Senior User  Location: Altrincham Registered: 21 Aug 2007 Posts: 697 Status: Offline |
Post #1
I did a search but couldnt find anything.Just wondering what this sensor actually does? My car has been running lumpy on and off for a few month now and felt down on power, so been changing bits here there and everywhere. So ive just changed the green temp sensor on the pug and everything seems fine now seems to have its power back and run fine. So any info welcome  Cheers ________________________________________ Black Ph1 XSi-6161.8BHP (Getting Better!!!!) |
 Posted 3rd Feb 2011 at 04:55
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Rich E
Forum Admin Location: Hertfordshire Registered: 27 Apr 2005 Posts: 7,757 Status: Offline |
Post #2
It's used by the ECU to enrich the mixture when the engine is cold, effectively making an electronic version of a choke.If the sensor is giving a false high temp reading then no enrichment will take place when the engine is cold and with a false low temp reading it will continue mixture enrichment after the engine has warmed up which is what it was doing on your car. ________________________________________ Rich |
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Posted 3rd Feb 2011 at 22:21
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:: blade ::
Senior User Location: Altrincham Registered: 21 Aug 2007 Posts: 697 Status: Offline |
Post #3
ahh right, i see  , thanks for that, now to sus out why the car stinks on idle ________________________________________ Black Ph1 XSi-6161.8BHP (Getting Better!!!!) |
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Posted 3rd Feb 2011 at 22:23
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Rich E
Forum Admin Location: Hertfordshire Registered: 27 Apr 2005 Posts: 7,757 Status: Offline |
Post #4
Stinks of what? Petrol?________________________________________ Rich |
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Posted 3rd Feb 2011 at 22:32
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:: blade ::
Senior User Location: Altrincham Registered: 21 Aug 2007 Posts: 697 Status: Offline |
Post #5
yea fuel, got a feeling the lambda is on its way out, but not sure________________________________________ Black Ph1 XSi-6161.8BHP (Getting Better!!!!) |
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Posted 3rd Feb 2011 at 22:33
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Rich E
Forum Admin Location: Hertfordshire Registered: 27 Apr 2005 Posts: 7,757 Status: Offline |
Post #6
Will most likely be the rubber fuel lines in the engine bay. They are probably all cracked inside and seeping fuel.________________________________________ Rich |
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Posted 3rd Feb 2011 at 22:36
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:: blade ::
Senior User Location: Altrincham Registered: 21 Aug 2007 Posts: 697 Status: Offline |
Post #7
them pipe are pretty much new tho, will get them checked thocheers ________________________________________ Black Ph1 XSi-6161.8BHP (Getting Better!!!!) |
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Posted 3rd Feb 2011 at 22:38
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cjm_harris
Seasoned Pro  Location: Parts for Sale section Registered: 04 Dec 2007 Posts: 7,442 Status: Offline |
Post #8
Told you it would be the coolant temp sensor   ________________________________________ Chris1999 China Gti6 Supercharged  [Fun car] >>Project Thread<<2000 Bianca 306 Diesel [Work runabout] |
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Posted 4th Feb 2011 at 20:19
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:: blade ::
Senior User Location: Altrincham Registered: 21 Aug 2007 Posts: 697 Status: Offline |
Post #9
:p ur just too good, want to diagnose the other faults :p________________________________________ Black Ph1 XSi-6161.8BHP (Getting Better!!!!) |
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Posted 4th Feb 2011 at 20:57
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bennn
Seasoned Pro  Location: Shrewsbury Registered: 05 Sep 2008 Posts: 2,705 Status: Offline |
Post #10
:: blade :: wrote: yea fuel, got a feeling the lambda is on its way out, but not sure It could have well killed off your lambda and wont have been doing you're cat any good if its been overfueling for a while. ________________________________________ Cherry Red 306 HDIChampionship White Integra DC5 Type R |
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Posted 4th Feb 2011 at 21:02
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