MK5 smiley heater probs?? >> nice videos here ONE STOP SHOP

[97transit2.5D]

I thought it was quite confusing to sort the heater problems in MK5 , so why not have a ONE STOP SHOP that organises everything for you to study? ;

[u]VIDEOS[/u]

OVERVIEW of the heater system mk5 mid 1997 or earlier

https://www.youtube.com/watch?v=JDk8GUMyTe0

and also how to take apart the whole console to get access to the inerds of the heat and fan system

https://www.youtube.com/watch?v=85iCOKECJuY

SCHEMATICS (found this from the transit forum thks to cherniy_chack and others)

MK5_heater_electrical_schemat.pdf

EXPLODED VIEW OF HEATER SYSTEM and parts (heater hardware taken from this forum courtesy of Chug and others)
This is for the heater system with fan speed regulator under dash, so post mid 1997)

MK5_heater_electrical_schemat.pdf

[97transit2.5D]

Here are some common parts
RESISTORS (pre mid 1997 in engine bay by drivers main light, post mid 1997 under dash board item 11 on exploded view)

fan_speed_resistors.png

FAN BLOWERS

blower motor fan.png

[V184]

the sub loom can burn out quite common but relevantly easy to change

[97transit2.5D]

my problem seems to be a blocked MATRIX.

symptoms. No heat on demist or anything

top inlet hose HOT going into heater via bulk head
BOTTOM hose cold coming out.

Does anyone know how to disconnect these hoses??

20231214_091634[1].jpg

[97transit2.5D]

found these matrix types not sure which is for a smiley 1997 pre updates ie resistor in engine bay

3matrix.png

[terryplaysmusic]

Thanks for your efforts!

I've been deep in the study for quite some time now and this is getting me closer I feel!

Fingers crossed I can find the issue when I take the dash apart!

-Terry

[Bruce e]

I got my one working better by running a house hold descale through it with a small electric pump

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