fyall
Member
Registered: 14th Nov 07
Location: FALKIRK, SCOTLAND
User status: Offline
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my corsa only blows cold air even when the temp gauge is at 100 i put rad weld in last week and was wondering if this would make it blow cold
[Edited on 09-01-2008 by fyall]
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scottyp1989
Member
Registered: 29th Jul 07
Location: Warley, West Midlands
User status: Offline
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heaters got nothin to do with your radiator its your heater matrix. one of the cables may of came off or somethin
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fyall
Member
Registered: 14th Nov 07
Location: FALKIRK, SCOTLAND
User status: Offline
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all conections behind switches seem ok anything else i can check
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Limecat
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Registered: 25th Jun 05
Location: The Internet
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quote:
Originally posted by scottyp1989
heaters got nothin to do with your radiator its your heater matrix. one of the cables may of came off or somethin
It has because the heater matrix is in the same circuit.
Check that the water is topped up and that you have no air locks etc.
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fyall
Member
Registered: 14th Nov 07
Location: FALKIRK, SCOTLAND
User status: Offline
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water is ok how do i check for air locks ?
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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If water is pumping round normally (rad getting hot and engine temp normal) then your heater matrix is probably blocked, maybe because of the radweld blocking it up. You can take the pipes off it and run a hose pipe through in both directions a few times and that will clear it. But its a pain in the arse to get to the pipes and they will be well stuck on.
Does the hot/cold dial feel normal when you turn it or has it gone all loose?
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Limecat
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Registered: 25th Jun 05
Location: The Internet
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Best bet is to go around squeezing pipes.
At the end of the day if you are getting the blowers working as usual the reason you are getting no heat is because the water in the heater matrix isn't hot (be it a leak/blockage etc)
I assume you are not getting any leaks inside the car, your water level is staying constant (not going down over a period of time) etc?
The rad weld may be responsible for a blockage at a guess?
Another thing worth trying is to remove the thermostat and check it is opening as it should be (pan of boiling water) or try running it without to help narrow anything down but it will take AGES for the water to get upto temperature without it fitted.
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fyall
Member
Registered: 14th Nov 07
Location: FALKIRK, SCOTLAND
User status: Offline
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dial feels normal. witch pipes shood i take off?
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
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You can only get to them under the car, they are at the back of the engine about in the middle. they are side by side and go through the bulkhead. you will probably have to cut them off though if they havent been off before (as long as theres enough left still)
Every car ive had them off with has had to have them cut off
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Limecat
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Registered: 25th Jun 05
Location: The Internet
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The ones for the heater matrix come out of the centre of the lower part of the 'bulkhead', above and not far from the selector rod IIRC?
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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quote:
Originally posted by LETGSI16V
Best bet is to go around squeezing pipes.
At the end of the day if you are getting the blowers working as usual the reason you are getting no heat is because the water in the heater matrix isn't hot (be it a leak/blockage etc)
I assume you are not getting any leaks inside the car, your water level is staying constant (not going down over a period of time) etc?
The rad weld may be responsible for a blockage at a guess?
Another thing worth trying is to remove the thermostat and check it is opening as it should be (pan of boiling water) or try running it without to help narrow anything down but it will take AGES for the water to get upto temperature without it fitted.
With the thermostat open or closed doent make a difference to the heater matrix flow
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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quote:
Originally posted by LETGSI16V
The ones for the heater matrix come out of the centre of the lower part of the 'bulkhead', above and not far from the selector rod IIRC?
Yes thats right, what engine is it? one of the pipes will go to the big black one onto the back of the water pump and the other pipe goes to different places depending which engine it is. If its a LET (guessing from your name) then the other pipe goes to the battery side of the cylinder head
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