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Author Topic: VW Heating and Steaming issues front and back.  (Read 1681 times)

Offline yeshu26

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VW Heating and Steaming issues front and back.
« on: November 24, 2018, 11:05:30 AM »
1: Rear Heating: Being discussed in another thread. Rear fans blasting cold air again. My Torx have arrived, so will open up the C pillar as recommended before. VCDS test screenshots are attached never the less. One is taken at Auto temperature (22).

Second is taken when the temperature is at HI.

2: Engine Heating: Whatever you do, Italian tune up, over-speed, put the car in a furnace, the temperature will never ever go above 62-66 degrees. The reading has been confirmed by using Ross Tech, and rules out the instrument gauge.

3: Interesting bit: When the temperature setting is OFF (fans off et al), the temperature needle goes up to 80 degrees (confirmed buy ross tech). Increase the temperature setting to say 24 and beyond in the freezing Aberdeen weather, and temperature drops like a stone. ross Tech found no errors.

So today, I disconnected the coolant FAN by power, to see if it made any difference. No it did not! Engine simply does not heat enough. Open thermostat?

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #1 on: November 24, 2018, 07:44:30 PM »
Sounds like a thermostat fault to me,as a temp test try a brake pipe clamp on hose from thermostat and see if it will reach operating temp

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #2 on: November 24, 2018, 10:59:21 PM »
Ok. Do Thermostat faults dont reflect on the vcds tests?

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #3 on: November 25, 2018, 06:37:36 AM »
No itís a mechanical part with no electrical feedback to ecu. It is designed to keep engine at optimum running temp so opens and closes as required to keep that desired temp. Diagnosing faults with stats is done with old school methods and not by plugging in.

On these cars with such a large cooling circuit and an engine that produces very little waste heat warm up times in cold weather can be quite long of boost heater not working. However in my experience even with boost heat not running the engine still reached operating temp and stayed there. So in my opinion you have a faulty stat in yours.

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #4 on: November 25, 2018, 10:25:41 AM »
No itís a mechanical part with no electrical feedback to ecu. It is designed to keep engine at optimum running temp so opens and closes as required to keep that desired temp. Diagnosing faults with stats is done with old school methods and not by plugging in.

On these cars with such a large cooling circuit and an engine that produces very little waste heat warm up times in cold weather can be quite long of boost heater not working. However in my experience even with boost heat not running the engine still reached operating temp and stayed there. So in my opinion you have a faulty stat in yours.

Ta

1: Easy to change? any tutorials?
2: What's the story with the rear cold air blast?

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #5 on: November 25, 2018, 11:08:42 AM »
Yeah easy enough to change itís in block by alternator,1/4 drive socket set will be ideal.

If coolant not heating up enough it will be even colder by time it reaches rear of the car

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #6 on: November 25, 2018, 11:14:04 AM »
Sorry to be pain,

Any pictures or pictorials for it?

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #7 on: November 25, 2018, 10:32:15 PM »
Have a look at this thread as it shows the thermostat housing. 2 10mm head bolts hold it in place. 1/4 drive socket set due to space down there,good idea to disconnect battery as you will be getting close to alternator wiring with tools.

https://www.fordmpv.com/smf2/ford-galaxy-common-faults-and-problems/heater-blowing-cold-air-and-engine-overheating-underload-(all-models)/

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #8 on: November 26, 2018, 08:51:14 AM »
Have a look at this thread as it shows the thermostat housing. 2 10mm head bolts hold it in place. 1/4 drive socket set due to space down there,good idea to disconnect battery as you will be getting close to alternator wiring with tools.

https://www.fordmpv.com/smf2/ford-galaxy-common-faults-and-problems/heater-blowing-cold-air-and-engine-overheating-underload-(all-models)/

Thanks!


Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #9 on: November 26, 2018, 10:54:16 AM »
On a seperate note even when the car is hot and dry. Windows steams up. Could one of the causes be pin-hole leak in the heater matrix assuming everything is running as normal?

Its the  windscreen which is steamy, and every other window is squeaky clean.

Offline brianh

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Re: VW Heating and Steaming issues front and back.
« Reply #10 on: November 26, 2018, 12:23:01 PM »
It could do, but you'd usually smell that (antifreeze has a sickley sweet smell to it). Also it tends to leave a flim on the glass thats a bugger to get rid of by cleaning it. Assuming its actually got Antifreeze in the system of course, though given your location posted previously I'm sure you'd already know if it hadn't as you'd have noticed other problems anyway. But easy to check the expansion bottle to see what is in there if your not sure.

But if it is leaking, you'd expect to see the expansion bottle level dropping as well.

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #11 on: December 06, 2018, 05:57:31 AM »
Finally! Drove 4 miles, till it gulped the expansion bottle dry. In total topped up 2+3+2 litres of coolant.

Nice and hot now. Engine temp up to 90.

ta lads.

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #12 on: December 12, 2018, 08:33:26 AM »
So the window phantom is back.

This is how I drive! See the pic for yourself lads.

1: We checked the rear ventilation, and clear it up with pressurised air although it was not necessary

2: Aircon working fine. Air circulation button is working fine. demist control is working fine.

3: Thermostat is tip top

4: No water ingress in cabin, as far as I can see.

5: We jacked up the car, and let the aircon run for some time. There was no water dropping from anywhere under the car, which we expected due to condensation. Aberdeen weather to blame perhaps?


Where are the front ventilation egress vents?


Anything other ideas?


Thanks

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #13 on: December 12, 2018, 10:19:33 AM »
I wouldnít expect a great deal of condensation drain in this weather as the temp differential between evaporator and ambient is not that big.

Itís certainly worth checking the air con condensation drain is clear though,also the scuttle drains as they can block and allow moisture to build up on pollen filter.
Also behind rear quarter trims check the vents to make sure they are ok.

Canít really think of anything else so long as there are no water leaks in to the car and recirc is functioning correctly.

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #14 on: December 12, 2018, 11:57:57 AM »
I wouldnít expect a great deal of condensation drain in this weather as the temp differential between evaporator and ambient is not that big.

Itís certainly worth checking the air con condensation drain is clear though,also the scuttle drains as they can block and allow moisture to build up on pollen filter.
Also behind rear quarter trims check the vents to make sure they are ok.

Canít really think of anything else so long as there are no water leaks in to the car and recirc is functioning correctly.

Where do I find the air con condensation drain and scuttle drains? Any pictorials?

Thanks

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #15 on: December 12, 2018, 02:26:05 PM »
Air con comes out of bulkhead above subframe,you will need to check from under the car.
Scuttle drains have a look in ref library for bulkhead extension removal as they are on there if I remember correctly

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #16 on: December 12, 2018, 02:29:20 PM »
Air con comes out of bulkhead above subframe,you will need to check from under the car.
Scuttle drains have a look in ref library for bulkhead extension removal as they are on there if I remember correctly

1: Do you have more specific location of the bulkhead drains?

2: Does my model have any drains coming out of the wheel arch areas? I have read somewhere that many hotel have drains there as well?

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #17 on: December 12, 2018, 02:38:54 PM »
Canít remember exactly but I think it comes out by where the gear cables exit??  If you get underneath you will see it coming out it will have a rubber end on that opens up with weight of water behind it


Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #18 on: December 12, 2018, 03:00:32 PM »
Canít remember exactly but I think it comes out by where the gear cables exit??  If you get underneath you will see it coming out it will have a rubber end on that opens up with weight of water behind it



T Y

I intend to take compressed air and start firing to clear out the gunk. Where would be the good points to start?

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #19 on: December 12, 2018, 03:17:15 PM »
PS: 3 of my door's wirelooms have been repaired in a botched manner. I.e. there original protective rubber is missing.

They are never wet or something, but could they be responsible in anyway for the problem?
I mean when a car is being driven, the cold and moist air from the outside finds its way into the cabin then condensing on the windscreen?>

Offline Chrispb

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Re: VW Heating and Steaming issues front and back.
« Reply #20 on: December 12, 2018, 04:39:38 PM »


https://www.fordmpv.com/smf2/ford-galaxy-common-faults-and-problems/galaxy-mk1-mk2-sun-roof-drainage/

https://www.fordmpv.com/smf2/ford-galaxy-common-faults-and-problems/galaxy-bulkhead-extension-(lower-scuttle)-removal/

https://www.fordmpv.com/smf2/ford-galaxy-common-faults-and-problems/galaxy-pollen-filter-removal-and-replacement/

The condensate drain tube is visible (pipe sticking out from bulkhead) looking down behind the gearbox,

Aircon will not work below 5deg C

Check refrigerant pipes for operation the large one will be cold the small will be hot if working.
2009 Kia Sedona GS In Black 2.9CRDI 183PS. 5 Speed Manual WAV.
2003 MK2 Galaxy Ghia In Solid Black 1.9 TDI 115PS. 5 Speed Automatic.

Upgraded Eberspšcher booster heater  to independent heating with 7 day timer.

With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me.
All for a pint of Strongbow.

The FordMPV.com Forum - The free forum for questions and answers relating to the Ford Galaxy, S-Max and C-Max

Offline brianh

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Re: VW Heating and Steaming issues front and back.
« Reply #21 on: December 12, 2018, 04:45:28 PM »
Where do I find the air con condensation drain and scuttle drains? Any pictorials?

Thanks

Scuttle drains are either side of the scuttle area - the bit below the wipers. You need to take some plastic off to see them, but if they are blocked you will have a large portable puddle running round with you. If you can see into the area where the pollen filter lives, if the drains are blocked then there will be water trapped under the bottom edge of the housing.

Usually a problem if its parked near to trees, as they block up with trapped leaves.

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #22 on: December 12, 2018, 09:47:05 PM »
PS: 3 of my door's wirelooms have been repaired in a botched manner. I.e. there original protective rubber is missing.

They are never wet or something, but could they be responsible in anyway for the problem?
I mean when a car is being driven, the cold and moist air from the outside finds its way into the cabin then condensing on the windscreen?>

No that wonít cause an issue as the inside of door can get wet anyway thatís why it has drain holes and a membrane between the door and door card.

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #23 on: December 12, 2018, 10:20:20 PM »

https://www.fordmpv.com/smf2/ford-galaxy-common-faults-and-problems/galaxy-mk1-mk2-sun-roof-drainage/

https://www.fordmpv.com/smf2/ford-galaxy-common-faults-and-problems/galaxy-bulkhead-extension-(lower-scuttle)-removal/

https://www.fordmpv.com/smf2/ford-galaxy-common-faults-and-problems/galaxy-pollen-filter-removal-and-replacement/

The condensate drain tube is visible (pipe sticking out from bulkhead) looking down behind the gearbox,

Aircon will not work below 5deg C

Check refrigerant pipes for operation the large one will be cold the small will be hot if working.

Thanks Chris

1: I can confirm that one aircon pipe is hot, and the other is cold.

2: Is there any drain/s to the heater intake which I could investigate apart from the pollen filter area?

3: I have access to UV torch. May I use a AIRCON dye and mix it with coolant for investigation?

Offline brianh

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Re: VW Heating and Steaming issues front and back.
« Reply #24 on: December 13, 2018, 08:09:37 PM »
Thanks Chris

1: I can confirm that one aircon pipe is hot, and the other is cold.

2: Is there any drain/s to the heater intake which I could investigate apart from the pollen filter area?

3: I have access to UV torch. May I use a AIRCON dye and mix it with coolant for investigation?

They do a specific dye to put into the coolant to detect by that method. Usually the a/c stuff is in the oil, but not always. But given theres a specific one I'd suspect that means the a/c one isn't suitable for mixing with coolant.
Are you finding the level in the expansion bottle gradually drops?

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #25 on: December 13, 2018, 08:55:48 PM »
They do a specific dye to put into the coolant to detect by that method. Usually the a/c stuff is in the oil, but not always. But given theres a specific one I'd suspect that means the a/c one isn't suitable for mixing with coolant.
Are you finding the level in the expansion bottle gradually drops?

Have not noticed any coolant since the thermostat change over 10 days back. There was an incident of airlock, but all settled now.

Offline brianh

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Re: VW Heating and Steaming issues front and back.
« Reply #26 on: December 14, 2018, 05:50:08 PM »
Have not noticed any coolant since the thermostat change over 10 days back. There was an incident of airlock, but all settled now.

Not much point in putting dye in the coolant then as if it isn't going down it can't be getting anywhere it shouldn't. If it was coolant (and there is some antifreeze in the coolant, which your posts suggests will be the case) you will be smelling it - it has a horrible sickly smell to it when heated.

The only place i know of for the water ingress though the heater is the front one where the pollen filter is. That said though, does the a/c Condensate drain actually work? You should see a puddle under the car if the a/c is on where it drips down, If that is blocked up then that might explain your problem.

The rear heater doesn't draw from the outside air, it just recirculates. Don't know on the rear aircon that yours has where it draws air in from, would assume the front pollen filter route, but that may not be the case. It should be the case it has possibly another drain point like the main heater though (I've not seen the dual a/c model, so don't know where the second evaporator lives)

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #27 on: December 14, 2018, 07:42:50 PM »
2nd evap is in the rear heater box and draws recirculated air in like the heater.

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #28 on: December 15, 2018, 11:45:16 AM »
2nd evap is in the rear heater box and draws recirculated air in like the heater.

Very well. Just to be clear, what am I investigating here?


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Re: VW Heating and Steaming issues front and back.
« Reply #29 on: December 15, 2018, 04:18:50 PM »
2nd evap is in the rear heater box and draws recirculated air in like the heater.

That being the case, there should be a condensate drain for it?

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #30 on: December 15, 2018, 05:41:29 PM »
That being the case, there should be a condensate drain for it?

That's a good question. Most of the pictorials on the web are around the front drainage systems.
Have not come across a rear one yet personally.

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Re: VW Heating and Steaming issues front and back.
« Reply #31 on: December 15, 2018, 06:48:27 PM »
I think you might have to dig into it to find out then, I can imagine if the rear a/c is allowing condensation to form and not escape as intended (And a cold evap unit will draw moisture from the car to it) all it will then do is send it round the car again to mist up the windows.

Should be possible to at least see condensation building up if so?

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #32 on: December 18, 2018, 12:29:56 AM »
Ok three problems found. Kindly refer to the pictures.

1: Is this amount water you see normal for the scuttle area? No wonder in the bonny Scottish windscreen steams up.

I followed ChrisP instructions and checked for the dirt or blockage in the front drainage system. All clear!

2: Grease in the intake vent.

3: In the cabin area (passenger area), we did some acrobatics to get our gloves reasonably wet and sticky with red coolant. Now the question here is, shall I just order the Heater Matrix or any other ancillary parts as well? Considering the fact the entire dashboard needs to be ripped apart to change the matrix.

Ta muchly

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Re: VW Heating and Steaming issues front and back.
« Reply #33 on: December 18, 2018, 01:14:48 AM »
Looks like you have found the culprit.

As for the matrix I changed mine and just ordered the matrix I didnít find I needed anything else other than matrix. Itís certainly a time consuming job to do though. Once dash is out and bolts for heater box are removed,undo the metal bar that runs across the car you then just about have enough room to lever heater box back so matrix can be pulled out.

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Re: VW Heating and Steaming issues front and back.
« Reply #34 on: December 18, 2018, 01:16:30 AM »
Looks like you have found the culprit.

As for the matrix I changed mine and just ordered the matrix I didnít find I needed anything else other than matrix. Itís certainly a time consuming job to do though. Once dash is out and bolts for heater box are removed,undo the metal bar that runs across the car you then just about have enough room to lever heater box back so matrix can be pulled out.

VISTEON any good by Euro?

2: Any thoughts on that puddle of that water you saw?

Ta

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Re: VW Heating and Steaming issues front and back.
« Reply #35 on: December 18, 2018, 07:05:50 AM »
Only ever heard of them for making the media system in the old galaxyís so would assume they are ok?

The drains are blocked if I remember correctly the drain holes are either side letting water out in to wheel arch area,but itís been a few years since I did mine so could be wrong. You need to get the water out,locate the drains and give them a good clear out.

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  • First Name: Himanshu
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Re: VW Heating and Steaming issues front and back.
« Reply #36 on: December 18, 2018, 08:10:09 AM »
Only ever heard of them for making the media system in the old galaxyís so would assume they are ok?

The drains are blocked if I remember correctly the drain holes are either side letting water out in to wheel arch area,but itís been a few years since I did mine so could be wrong. You need to get the water out,locate the drains and give them a good clear out.

We did the water test, which passed. When I change the matrix, I will give them a good blast by compressed air.

Thanks again

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #37 on: December 18, 2018, 08:32:50 AM »
The drains are clear but itís still holding water like that by the pollen filter housing? You sure they are all clear?

When you do all the work I would change pollen filter aswell as itís probably got wet due to that water

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #38 on: December 18, 2018, 09:55:03 AM »
The drains are clear but itís still holding water like that by the pollen filter housing? You sure they are all clear?

When you do all the work I would change pollen filter aswell as itís probably got wet due to that water

When we dropped water with  bottle the water came down freely, however I can't comment how "semi-blocked" they already are for bad weather.

Point well taken. I will certainly clean them pressurised air. Anything else to look in that area?

best
PS: Should that area be bone dry usually?
« Last Edit: December 18, 2018, 10:02:35 AM by yeshu26 »

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #39 on: December 18, 2018, 01:38:03 PM »
You will get trace of water there but it shouldnít be a pool like that.
Mine always got wet there but never had water pooling

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #40 on: December 18, 2018, 10:52:26 PM »
1: Does the matrix usually leak, or the associated pipes can also leak?

2: Having hard time on Fleabay to find a better quality part than Euro, but they are asking for OEM number. Tried 7zap as well with no luck. Any ideas folks?

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #41 on: December 19, 2018, 12:12:49 AM »
Canít answer that but with mine it was the matrix itself leaking,to be honest even if it is an o ring on the plastic tubes you still need to remove dash so may aswell change matrix anyway.

Mine was from eBay I forget the make but it was only about £30 a few years ago so doubt it was a well known make.

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #42 on: December 19, 2018, 08:34:19 AM »
Canít answer that but with mine it was the matrix itself leaking,to be honest even if it is an o ring on the plastic tubes you still need to remove dash so may aswell change matrix anyway.

Mine was from eBay I forget the make but it was only about £30 a few years ago so doubt it was a well known make.

Anyone go the dimensions, so I can compare it from the  fleabay listings?.

Sellers from Flea asking for OEM number, I heard from another use someone getting wrong size of matrix for Euro. Don't want to open the entire dashboard to find a wrong sized matrix. Don't want to pay for TPS either! bah humbug!!

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #43 on: December 19, 2018, 03:28:47 PM »
Ok. So there are two kinds of sizes available in the market for the engine code BVK.

Not sure, which one to buy for my car.

Size 1:  VISTEON BY Europarts

Depth [mm]32
Length [mm]265
Width [mm]158


Size 2: Nissens own website

250 x 158 x 42 mm

So we have two variables depth and the height!

I have read someone's horror story on the internet about cutting and modifying his dashboard to fir the new matrix. Dont want the same dilemma for myself.

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #44 on: December 20, 2018, 04:09:19 PM »
I have ordered the "smaller sized" NRF Heater. Will collect the "larger" sized heater from Euro locally.

On the big day, will take the heater out, measure it and open the appropriate box.
Hope NRF comes with O rings, apart from it's 5 year long guarantee.


Offline brianh

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Re: VW Heating and Steaming issues front and back.
« Reply #45 on: December 21, 2018, 04:53:39 PM »
1: Does the matrix usually leak, or the associated pipes can also leak?

2: Having hard time on Fleabay to find a better quality part than Euro, but they are asking for OEM number. Tried 7zap as well with no luck. Any ideas folks?

When I replaced mine it was leaking from the core - I don't think it helped that it had radweld used on it prior as the radiator was disintregating as well, but there was clearly a few places it looked to be seeping out of once we got it out, it had also leaked into the heater box and was working like a sticky glue on the flaps, so be prepared with stuff to clean them if required.

You will want a long handled phillips screwdriver when it comes to putting the new one in - that way it can be pushed through the bulkhead to screw up the two bolts that fit either side of the pipes.

Be aware if buying from ebay - The Lefthand drive models use a different matrix to the righthand ones. We had one of the ones ordered from ebay for months before getting round to dealing with fitting it, only to find it was then the wrong one. We used a euro car parts one in the end without major problems.

Nissens are usually good for radiators, can't see any reason a heater matrix from them would be a problem.

Offline brianh

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Re: VW Heating and Steaming issues front and back.
« Reply #46 on: December 21, 2018, 04:56:09 PM »
And on the scuttle drains your best bet is to get the hose in there and see if the water looks like its being trapped - If you look at the drivers side first you can just about see the drain hole at the end of the scuttle there, the one over the other side is the same, but much more difficult to see. If you need access I think easiest bet may be to remove the fixings from the wheel arch liner and go in from there.

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #47 on: December 22, 2018, 07:26:24 PM »
So the NRF Heater has arrived. Are these "foam thingys" enough to seal?

I was expected some O rings to go along.

What are the seals which I saw on Etka? (yellow highlighter)

Offline yeshu26

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Re: VW Heating and Steaming issues front and back.
« Reply #48 on: December 22, 2018, 07:31:46 PM »
And on the scuttle drains your best bet is to get the hose in there and see if the water looks like its being trapped - If you look at the drivers side first you can just about see the drain hole at the end of the scuttle there, the one over the other side is the same, but much more difficult to see. If you need access I think easiest bet may be to remove the fixings from the wheel arch liner and go in from there.

Cheers

Actually we did remove the wheelarch and tested the water flow which looked OK then. Never the less I will remove them again, and clean the drains with compressed air.

Any other possibility of puddles? 

For e.g.: my mate commented that the scuttle may have been improperly installed by Autoglass, and the water may have seeped via the "rubber bead" which is around the scuttle area. I am not referring to the windscreen bead, but there is another softer bead in the scuttle area.

Offline johnnyroper

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Re: VW Heating and Steaming issues front and back.
« Reply #49 on: December 22, 2018, 10:34:29 PM »
The foam things are only to seal against the bulkhead,the o rings are between the tube housing and matrix. Other end the hoses fit to the tubes.

Your mate could be right about scuttle not being in properly as like you say there is a seal on it. There should still be somewhere it can drain away in the area underneath though.

 

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