Wayne
Member
Registered: 19th May 04
Location: Haslingden, Lancashire
User status: Offline
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Hi, my heater in my corsa are oinly getting to a warm temperature no were as hot as it should get. It's got an xe in, plenty of water in expansion bottle, when you let the car warm up should there be pressure in the pipes so when you take off the cap the presure should be released? Or is it something to do with the heater matrix? If so how do i solve the problem? Thanks
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N3CRO
Member
Registered: 12th Apr 07
Location: Sandy, Bedfordshire
User status: Offline
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Could be the thermastat, that was the cause for my car.
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Wayne
Member
Registered: 19th May 04
Location: Haslingden, Lancashire
User status: Offline
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thermostat is new.
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Wayne
Member
Registered: 19th May 04
Location: Haslingden, Lancashire
User status: Offline
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can the matrix get blocked up?
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johnhara1
Member
Registered: 19th Oct 06
Location: Newcastle upon Tyne
User status: Offline
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Air lock?
try flushing the coolant and bleeding the system through with new coolant/anti freeze.
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Wayne
Member
Registered: 19th May 04
Location: Haslingden, Lancashire
User status: Offline
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yeah have done this as well when replaced the thermostat, new coolant. How do i bleed it properly?
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Stokie Dave
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Registered: 16th Dec 03
Location: Stoke-on-Trent
User status: Offline
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The pulley cable on the heat controller dial might have come off its clips, take the bottom passenger shelf off and have a look, simple problem mine had 
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barneykarl
Member
Registered: 29th Jul 06
Location: Stevenage
User status: Offline
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as above check cable is opening the control on the matrix first.
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Wayne
Member
Registered: 19th May 04
Location: Haslingden, Lancashire
User status: Offline
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will have a look
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Wayne
Member
Registered: 19th May 04
Location: Haslingden, Lancashire
User status: Offline
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can the matrix get full of crap?
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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Yep it can, its a pain in the arse to change I think but you can take the pipes off it and flush it both ways with a hosepipe, will porbably work but might not last forever becuse it never fully unblocks
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Wayne
Member
Registered: 19th May 04
Location: Haslingden, Lancashire
User status: Offline
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ah rite, where's best to clamp the hoses or should i just drain it all out? Are they expensive new?
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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its a pipes off and drain job really. never changed one myself but a mates had the same problem and flushing it fixed it for about a year
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Wayne
Member
Registered: 19th May 04
Location: Haslingden, Lancashire
User status: Offline
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yeah, it's just about getting warm but not very warm like they should be. All pipes are hot in the engine, no pressure now. So i guess the matrix is slightly blocked? Would this cause it not to get as hot?
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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Sounds like a blocked matrix to me, I take it the engine temperature is still normal? Shame its winter really, just buy yourself an extra coat and save a days work
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Wayne
Member
Registered: 19th May 04
Location: Haslingden, Lancashire
User status: Offline
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yeah engine temperature is fine runs as normal.. just not getting hot, will take it off tomorror and give it a good flush out just read haynes manual doesn't sound to tricky. Just takes ages to defrost car with it only gettin warmish lol.
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Wayne
Member
Registered: 19th May 04
Location: Haslingden, Lancashire
User status: Offline
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worked a treat cheers guys, took the heater matrix out, what a bastard it was! A fair bit clogged up with brown sludgey crap, flushed it out with got warm water and it's all now clear. Hot heaters again
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