Aux Heater - Does This Sound Like The Glowplug And If So, What Type ?

[sasquartch]

Hi a

 

I know this has been covered before but wanted to get some feedback first.

 

I have a 2005 (I think manufacture date is something like 11/04) 1.9TDI manual with the usual non-functioning auxiliary heater.

 

I decided to try and diagnose the problem and the results are as follows.

 

Shareware VAG.COM detects module 18 (AUX Heater) and reports VAG Number 7M3 815 071B, Component HEIZG. B/D5W 0001. It reports error code 01409 Repeated Flame-out.

 

I reset the code.

 

I then start the engine (it's only 3C outside and see if the aux heater does anything. I can hear the heater gradually spool up and I can feel air / gas being pumped out of the heater unit exhaust. It doesn't get hot so ignition clearly isn't happening.After a minute or so I can hear the heater unit spool down.

 

I checked VAG.COM later and the fault code had re-appeared.

 

Does this sound like the glow-plug ?

 

Another thread (can't find it now) I'm sure said that the aux heater on 2005 models is different and another type of glow plug is required.

 

So, does anyone know a) Does this sound like the glowplug, and :) What glowplug to buy (hopefully the vag.com data will specify this), and c) where the best place to buy one is

 

Is it just a question of replacing the glowplug, clearing the fault code and that's it ? Or is there more to it than that.

 

Thanks for any advice

[edatelder]

See the FAQs, no.1, by Nikpv,

[sasquartch]

Thanks for the reply

 

What I really want to find out is if the data from VAG.COM indicates what model of heater it is (and therefore which glowplug to buy) - it seems there are more than one type of heater fitted over the 10 years or so of production.

 

It seems very likely that it is the glowplug - if it was a problem with fuel (ie the pump) would vag.com be exoected to give another error message ?

[big_kev]

Sounds more like a faulty dosing pump.

[sasquartch]

Mmm, any idea how that could be tested ?

 

Would I still get a flameout error code ?

[gregers]

does your run on pump work?

[big_kev]

Mmm, any idea how that could be tested ?

 

Would I still get a flameout error code ?

 

Check to see if its pumping fuel by disconnecting it at the heater.

 

yes it would cause a flameout error .

[Munter]

I had this error on VAG-com also (after repairing a broken wire on the aux-heater). Repeated flame outs.

 

Today I replaced the glow plug which cured the problem, my aux-heater now works. As a test, once I had removed the old glow plug I hot-wired it to a leasure battery and it worked! This put serious doubts in my mind as to wether it was acutally the glow plug that was at fault.

 

Being as I had no other choice I installed the new plug and tried it anyway. It fixed the problem although I still do not understand why I was getting flame out errors with the original plug. Maybe the controller does not pass a full 12-14v to the plug, so it worked when I did but would not get hot enough with the voltage the controller passes through it?

 

Anyway, I would change the plug first before doing anything else.

[sasquartch]

Mmm, any idea how that could be tested ?

 

Would I still get a flameout error code ?

 

Check to see if its pumping fuel by disconnecting it at the heater.

 

yes it would cause a flameout error .

 

Are you saying I need to disconnect the fuel pipe to the heater and see if fuel is pumped out ? Is there a pump elsewhere that supplies the fuel to the heater ?

[Jayton]

As I understand it there is a small fuel pump to supply the aux heater, Disconnect the hose from this pump that runs to the heater unit at the heater end and see if fuel is pumped through (use a small glass jar to catch the fuel).

 

If it is then Woohay! Replace the GP and see if it works.

[sasquartch]

As I understand it there is a small fuel pump to supply the aux heater, Disconnect the hose from this pump that runs to the heater unit at the heater end and see if fuel is pumped through (use a small glass jar to catch the fuel).

 

If it is then Woohay! Replace the GP and see if it works.

 

 

Thanks all - a few things to look at then - first check the fuel is delivered to the heater, then if that's ok replace the glowplug.

 

Where have people bought their glowplugs from ?

 

Also can anyone say whether the data that is reported by vag.com is enough to identify which heater type is fitted (and hence which glowplug to buy) or is there some sort of ID plate on the heater I need to look at ?

[Jayton]

You'll want a Beru GH001

 

http://www.vwspares.co.uk/product_info.php?products_id=54

 

:46:

[dadstaxi]

Hi all new here but try this on ebay "Ford Galaxy 1.9TDi Cooling Water Pre-Heater " very cheap !!!!

[Mirez]

Hi all new here but try this on ebay "Ford Galaxy 1.9TDi Cooling Water Pre-Heater " very cheap !!!!

 

Comes back with two results, both are for the engine glowplugs not the aux heater one - hence the price :46:

[smokie]

When i replaced my glow plug i got it from ford and they only had one heater plug listed. i removed the old one it looked different and the wiring was different and i rang ford back up and was told it was the only one they do? i managed to get it to fit by altering the wiring and its worked great since.