more FIESTA HEATER help...??????
#1
more FIESTA HEATER help...??????
following on from this post -
https://www.scoobynet.com/other-marq...g-problem.html
i've had the cold air blowing problem, the heater control valve has been replaced, the thermostat has been checked and working fine, the coolant system has been drained and replaced but the cold air problem persists....
could anybody suggest what the cause could be? or a fiesta based site that could provide more info?
tia
max
https://www.scoobynet.com/other-marq...g-problem.html
i've had the cold air blowing problem, the heater control valve has been replaced, the thermostat has been checked and working fine, the coolant system has been drained and replaced but the cold air problem persists....
could anybody suggest what the cause could be? or a fiesta based site that could provide more info?
tia
max
#3
Did you check the power supply coming from the heater control (on the dash) to the valve? AFAIK it should be a pulsed 12v. If you're getting nothing then it could be the heater control on the dash. If it is, you'll be wanting one of Fleabay like this :-
eBay.co.uk: 1996 Ford Fiesta Mk4 Heater Control Unit Panel (item 300044389204 end time 08-Nov-06 12:34:15 GMT)
because they're about £120 new apparently
eBay.co.uk: 1996 Ford Fiesta Mk4 Heater Control Unit Panel (item 300044389204 end time 08-Nov-06 12:34:15 GMT)
because they're about £120 new apparently
#4
cheers for the replies guys
i have been thinking its a power supply prob, ie the heater control on the dash, but would it be the cold to hot blower?, as the 1,2,3,4 heater controls still works!
does anybody know if the whole panel needs to come out or can i just pull the cold to hot controler out and check somehow?
gaz-cole, where/what is the heater matrix?
i have been thinking its a power supply prob, ie the heater control on the dash, but would it be the cold to hot blower?, as the 1,2,3,4 heater controls still works!
does anybody know if the whole panel needs to come out or can i just pull the cold to hot controler out and check somehow?
gaz-cole, where/what is the heater matrix?
#5
The electro wizardry is on the back of the panel I posted up there ^ small circuit board. (the fan switch is seperate, as is the direction switch which still sensibly runs off cable)
Unless, you are watching that panel ^ on ebay, someone is about to get a £4.99 bargain in 13 mins
Unless, you are watching that panel ^ on ebay, someone is about to get a £4.99 bargain in 13 mins
#6
the heater matrix is the small radiator on back of your dash board thats where the warm air comes from on the inside of your car and if its blocked at all you wont get any water flow trough the heater matrix
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#8
Originally Posted by Stainy
The electro wizardry is on the back of the panel I posted up there ^ small circuit board. (the fan switch is seperate, as is the direction switch which still sensibly runs off cable)
Unless, you are watching that panel ^ on ebay, someone is about to get a £4.99 bargain in 13 mins
Unless, you are watching that panel ^ on ebay, someone is about to get a £4.99 bargain in 13 mins
do you know if its a plug in job, or am i going to have to get the soldering iron out?
thanks again
#10
have got a 12v pulse at the HVC!
nexts tep of diagnosis, looks like its going to be the heater matrix, not much else left to check...
gaz-cole, any idea how to access this? is it a remove dash job?
as a side note, the heater now provides its own 'natural' heat once the car is warmed up and moving, end up stationery and it goes back to cold... would this be more signs of the heater matrix not working?
thanks
nexts tep of diagnosis, looks like its going to be the heater matrix, not much else left to check...
Originally Posted by gaz-cole
the heater matrix is the small radiator on back of your dash board thats where the warm air comes from on the inside of your car and if its blocked at all you wont get any water flow trough the heater matrix
as a side note, the heater now provides its own 'natural' heat once the car is warmed up and moving, end up stationery and it goes back to cold... would this be more signs of the heater matrix not working?
thanks
#11
sounds like bad flow to me. You've replaced the valve and the heater controls are okay. So as long as you have hot pipes at the valve, it's cabin side. Try taking the valve off again and using a hose-pipe down the hose into the car. use it in the reverse direction to normal flow and it *may* clear any blockage
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