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Author Topic: no heating  (Read 2660 times)

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omega trev

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no heating
« on: 16 November 2009, 19:39:23 »
hey all
im having a few probs with the heating in the old elite, im not getting hot air from the vents in the car even tho both the alloy pipes off the matrix are hot, ive tried the reset (off and auto buttons pressed same time) and the little vent is still sucking the air in. now for the strange bit, if i take the vac pipe off the hbv valve and then replace it straight away the air in the cabin does get slightly warmer! i wouldnt have thought the hbv was at fault as both of the matrix pipes are hot, any ideas anyone?
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VX1

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Re: no heating
« Reply #1 on: 16 November 2009, 21:46:14 »
Sounds like to me that all the vac pipes have been put on the wrong way round. Have you had/done any work to the engine which you would need to remove any of the vac pipes?
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Boracic

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Re: no heating
« Reply #2 on: 17 November 2009, 12:47:55 »
Does it work if you press the Eco switch? My old Elite only seemed to blow hot air in Eco mode for some reason
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GArlington

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Re: no heating
« Reply #3 on: 17 November 2009, 16:32:09 »
Quote
hey all
im having a few probs with the heating in the old elite, im not getting hot air from the vents in the car even tho both the alloy pipes off the matrix are hot,
Did you use Radweld any time recently (or before it happened)?
As far as I know heating rad gets blocked by it before the main radiator gets sealed...
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omega trev

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Re: no heating
« Reply #4 on: 17 November 2009, 17:17:43 »
eco switch on or of makes no difference at all mate and as far as rad weld is concerned i havnt used it but cant say it hasnt been used before, the vac pipes are working fine as far as i can see, vac on when set to cold no vac when set for heat as i said the two alloy pipes to and from the matrix are both hot so im at a complete loss as to why i have no heat :(
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steve2.5cd

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Re: no heating
« Reply #5 on: 17 November 2009, 18:56:52 »
Airlock in the system ?
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omega trev

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Re: no heating
« Reply #6 on: 17 November 2009, 20:40:54 »
I don't think it's air locked as I wouldnt be getting hot water in and out of the matrix or am I wrong
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Marks DTM Calib

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Re: no heating
« Reply #7 on: 17 November 2009, 20:43:21 »
Hmmmm....can you try flushing the matrix through with a hose pipe.

Do you get hot air on either side (passenger or drivers)
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omega trev

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Re: no heating
« Reply #8 on: 18 November 2009, 18:28:36 »
no hot air on either side mark, it was flushed out back in april and i wasnt using the heater then, i got the car in feb so im not sure the heating has ever worked since ive owned it :( if i was only getting hot water through the matrix inlet and the outlet was cold it would point to blocked matrix but to be getting both pipes hot and still no heat at the vents is a bit baffleing!
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Marks DTM Calib

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Re: no heating
« Reply #9 on: 18 November 2009, 20:04:26 »
Quote
no hot air on either side mark, it was flushed out back in april and i wasnt using the heater then, i got the car in feb so im not sure the heating has ever worked since ive owned it :( if i was only getting hot water through the matrix inlet and the outlet was cold it would point to blocked matrix but to be getting both pipes hot and still no heat at the vents is a bit baffleing!


You have to consider that the water will conduct the heat through such a short section quite quickly....and hence both pipes can still feel hot.
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omega trev

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Re: no heating
« Reply #10 on: 18 November 2009, 20:49:00 »
ill try and do another flush then mate and see how we go, at first i did suspect hbv but im not getting any coolant loss from it or can they be faulty without coolant loss?
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Marks DTM Calib

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Re: no heating
« Reply #11 on: 18 November 2009, 21:03:29 »
What year is the car....I am assuming it has climate
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omega trev

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Re: no heating
« Reply #12 on: 19 November 2009, 16:56:19 »
yes mate its a 99 t and it does have digital climate, i tried the old reset trick but to no avail.
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medwaykent

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Re: no heating
« Reply #13 on: 24 November 2009, 18:34:20 »
have you dicovered your fault as i have same problem
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omega trev

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Re: no heating
« Reply #14 on: 27 November 2009, 14:43:17 »
not yet mate im gonna do a few things at once when i get time i.e. hbv change and matrix flush ill pm u you the results  :y
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