Mertin
Member
Registered: 12th Oct 05
Location: Scotland
User status: Offline
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Car has started running alot hotter than usual, and when sitting at 60 the gauge will rise to 100 and continue to rise and this is with the fans on 4. At first I thought it was the thermostat but I thought the fast im going, the more air is getting into the engine
If i leave the car idling it takes a while for the gauge to rise
Could it be a sensor for the gauge or anything else other than the thermostat? Anyone experinced anything similar?
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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air lock on the coolent system?
This would cause the gauge to rapidly rise
Drives supercharged Tec with torque  
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Mertin
Member
Registered: 12th Oct 05
Location: Scotland
User status: Offline
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When the gauge hits 100 the fan doesnt kick in, and iv opened the bonnet when the gauge is at 100 and the engine doesnt seem to be at 100. Iv had the bonnet open before at 100 and youy could tell straight away it was hot
If there was an air lock and the gauge was at 100 would the fan still kick in? Or is the gauge incorrect
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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yer fan would still kick in as it runs of a swtich in the rad
Drives supercharged Tec with torque
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Mertin
Member
Registered: 12th Oct 05
Location: Scotland
User status: Offline
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I was thinking maybe it was something to do with a sensor, and the fast the engine is going the more voltage is being created and the higher the gauge will go?
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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Im not sure what the dash guage reads from actually or how it works
Drives supercharged Tec with torque
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ainsley_brader
Member
Registered: 24th Mar 02
Location: Tattershall, Lincolnshire
User status: Offline
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thermostat is possible.
You are getting more air through the radiator the faster your going but thats no help if the water isnt circulating through the rad.
Check stat and water pump
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ainsley_brader
Member
Registered: 24th Mar 02
Location: Tattershall, Lincolnshire
User status: Offline
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just read the replies if the water wasnt circulating througfh the rad the fan wouldnt switch on as it wouldnt know the water in the engine was hot 
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Mertin
Member
Registered: 12th Oct 05
Location: Scotland
User status: Offline
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Ok thanks, will get the stat looked at and take it from there
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VegasPhil
Premium Member
Registered: 16th Jan 05
Location: Fareham, Hants Drives: Octavia VRS
User status: Offline
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Try changing the cap on the header tank...
Corsa 2.0 16v Vegas - Sold
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Ian W
Member
Registered: 8th Nov 03
Location: Wirral, Merseyside
User status: Offline
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I had six months of thinking my car was overheating, eventually it turned out to be a bad earth making the clocks over read !
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