MarkSport
Member
Registered: 22nd May 09
User status: Offline
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As title says everyone, its on a 1.8 vectra x18xe1 engine...
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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Airlock in the matrix
Coolant not getting hot
Lack of coolant
Give the main rad pipes a squeeze, see how they feel.
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MarkSport
Member
Registered: 22nd May 09
User status: Offline
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Ah cheers Ian, The owner seems to think its the water pump? I have my doubts though!
I had one before with this engine so know they can be pretty decent. Will give it a try, cheers 
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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Hence seeing if the rest of the system is hot.
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MarkSport
Member
Registered: 22nd May 09
User status: Offline
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To add aswell, it only passed its mot 2 weeks ago so cant be anything too serious.
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MarkSport
Member
Registered: 22nd May 09
User status: Offline
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quote:
Originally posted by Ian
Hence seeing if the rest of the system is hot.
Brilliant, so if the heaters are blowing out cold but the temp gauge reads normal it could be something simple?
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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Temp guage can't be completely trusted as it may be somewhere where the system is hot.
Water pump failure may still indicate normal running temp on the dash.
You need to feel the pipes ideally.
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MarkSport
Member
Registered: 22nd May 09
User status: Offline
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Brilliant Ian, cheers thats helped alot.
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Warren G
Member
Registered: 14th May 06
Location: Kent
User status: Offline
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cable might of come off the back of the instruments for the adjuster
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scottyp1989
Member
Registered: 29th Jul 07
Location: Warley, West Midlands
User status: Offline
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stoped working in what way? just blowing cold? or not working at all? if only blowing cold do what ian said. if not working at all check the resistor pack, had a few of them go on me.
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Ryan_G1
Member
Registered: 29th Aug 05
Location: East Ayrshire
User status: Offline
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quote:
Originally posted by MarkSport
To add aswell, it only passed its mot 2 weeks ago so cant be anything too serious.
Aye because they check your coolant system on an MOT 
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alan-g-w
Member
Registered: 9th Nov 07
Location: Glasgow
User status: Offline
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quote:
Originally posted by Ian
Temp guage can't be completely trusted as it may be somewhere where the system is hot.
Water pump failure may still indicate normal running temp on the dash.
You need to feel the pipes ideally.
Water pump failure would see the temperature going off the scale I'd have thought?
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Ryan_G1
Member
Registered: 29th Aug 05
Location: East Ayrshire
User status: Offline
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Not always Alan.
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alan-g-w
Member
Registered: 9th Nov 07
Location: Glasgow
User status: Offline
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Aye I wasn't sure, just figured it'd cause the water to boil up. Thought the steam would reach the temp sensor and read as dead hot.
Not doubting it or anything but how would it not show up?
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Crana
Member
Registered: 20th Jan 09
Location: Newcastle
User status: Offline
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my heaters are also shit there not cold but are luke warm
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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Luke warm could simply be that the engine isn't getting hot enough although it's more likely to be air in the system.
Answer to the temp sensor not reading problems is that it doesn't measure the entire system so lack of pressure/circulation may not be apparent.
Might identify it - but you also can't trust it 100%.
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