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Author Topic: Heater problem  (Read 4284 times)

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Nick

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Heater problem
« on: 10 December 2006, 09:03:57 »
Morning everyone

A little while ago the heater valve went on the omega, at the time i could not get a new one so just by pased it.
At last i got one put it on but could not find the vacuum pipe that goes on top of the valve and still cannot find it.

could you boys please tell me where it comes from so that i can reconnect and get the haeter working at last

Cheers in advance

Nick
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Marks DTM Calib

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Re: Heater problem
« Reply #1 on: 10 December 2006, 09:19:46 »
If you look at the bulk head on the divers side you should be able to spot the two main coolant pipes that feed the heater matrix.

Around these is a rubber section and inbetween the two hoses is a hole into which the vac pipe for the bypass vave is inserted.....if I get a couple of minutes I ill take of pic of this area in my (currently) stripped out one.
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Marks DTM Calib

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Re: Heater problem
« Reply #2 on: 10 December 2006, 09:56:35 »
Ok, heres a pic:



The top hose has been removed for clarity (quick release connectors so easy enough), the small vac hose at the top left is the vac feed to the cabin (to operate the vac motors on the heater flaps etc), the additional hose is the feed to the heater bypass valve.

Its worth puttinga bit of washing up liquid on the vac pies to aid insertion into the rubber grommits.
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Nick

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Re: Heater problem
« Reply #3 on: 12 December 2006, 13:26:41 »
cheers for the responce

i will have a look this evening

Nick
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Nick

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Re: Heater problem
« Reply #4 on: 28 December 2006, 16:53:52 »
Right,

hello there everybody, hope you all had a good christmas.

i have managed to replace the crank sensor on the car and at the same time connected the vacuum pipe to the top of the heater valve.

the car now runs and drives beautifully, but the heater is still not working, just blowing through cold.

at one point yesterday it blew through hot for ABOUT 10 SECONDS AND then just went cold again.

please advise on waht this could be

thankyou again for all your help

Nick
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Nick

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Re: Heater problem
« Reply #5 on: 28 December 2006, 20:01:06 »
Please help it is cold in here
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TheBoy

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Re: Heater problem
« Reply #6 on: 28 December 2006, 20:03:59 »
As per Marks photo above, do you have the vac hose that goes through bulkhead?
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Nick

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Re: Heater problem
« Reply #7 on: 29 December 2006, 09:08:47 »
right,

one hose goes accross the engine bay and connects to a piece below the windscreen wipers on the passenger side.
the second one now connects to the heater valve only.

cheers nick
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TheBoy

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Re: Heater problem
« Reply #8 on: 29 December 2006, 11:29:05 »
Quote
right,

one hose goes accross the engine bay and connects to a piece below the windscreen wipers on the passenger side.
the second one now connects to the heater valve only.

cheers nick
not sure if you've seen it, but in faq or maint guides there is a diagram of vac pipes....
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MartinP

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Re: Heater problem
« Reply #9 on: 29 December 2006, 15:22:18 »
Had a similar problem, only had hot air when travelling, if I stopped or turned the fan speed up passed No1, the air went cold very quickly.

Sorted it by replacing the auxilliary water pump (under the expansion tank).

As I had a spare I just replaced it. But on inspection it was only full of crud, which stopped the impeller turning. Impeller is not connected to the motor shaft, it runs via a magnet which is rotating in reaction to the  motor rotor. (or something like that)

It can be serviced, undo the 4 cross head screws, pull off the the pump cover with the inlet/outlet pipes connect to. (orange seal situated under)

spin the impeller, if it turns easily its not the problem, if it's rough or jammed, just pull it out.

Clean the crud out of the bowl and off the magnet and re-assemble
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Nick

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Re: Heater problem
« Reply #10 on: 20 January 2007, 12:59:31 »
Had a similar problem, only had hot air when travelling, if I stopped or turned the fan speed up passed No1, the air went cold very quickly.
 
Sorted it by replacing the auxilliary water pump (under the expansion tank).
 
As I had a spare I just replaced it. But on inspection it was only full of crud, which stopped the impeller turning. Impeller is not connected to the motor shaft, it runs via a magnet which is rotating in reaction to the  motor rotor. (or something like that)
 
It can be serviced, undo the 4 cross head screws, pull off the the pump cover with the inlet/outlet pipes connect to. (orange seal situated under)
 
spin the impeller, if it turns easily its not the problem, if it's rough or jammed, just pull it out.
 


This is what issunaz wrote for me. Does he mean the header tank. So do i have to remove it and take it apart or what. Where is the auxilliary water pump. Please expalin i need to get this sorted

Thankyou for all you help

Nick
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JamesV6CDX

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Re: Heater problem
« Reply #11 on: 20 January 2007, 15:33:22 »
As per the post above, it's under the header tank.
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rpont

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Re: Heater problem
« Reply #12 on: 20 January 2007, 16:38:33 »
You might not have one, I don't think they were fitted before 1997. If you do it's mounted on the inner wing just below the header tank and the two pipes going to it are held in a clip fixed to the inner side of the header tank.
« Last Edit: 20 January 2007, 16:39:00 by rpont »
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Nick

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Re: Heater problem
« Reply #13 on: 20 January 2007, 22:00:47 »
No i do not have one, any  other ideas boys

Thanks for all of your help by the way

Nick
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TheBoy

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Re: Heater problem
« Reply #14 on: 21 January 2007, 10:28:46 »
Nick, remind us of the symptoms - no hot air?

If so, check the heater pipes entering matrix are hot - its always possible that the new HBV is faulty of that the vacuum pipe from the hbv to its solenoid is not connected right. Air lock in the matrix is possible as well...
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