Heater problem MK4

Problem or technical question?

Heater problem MK4

Postby rs220bhp on Mon Dec 28, 2009 1:27 am

My gf's sister has a mk4 fiesta and the heaters have stoped working, fan doesnt even blow, I have checked all the fuses and they are all ok. Next thing to check was the motor but looked under the bonnet and couldnt see it so im guessing its behind the dash. Anyone know if the fan/motor is a dash out job? Also is there a relay for the heaters and which one/where is it located. I said id have a look 4 her when its a bit lighter but dont wanna spend ages on it.

Suggestions welcome please

Cheers
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Re: Heater problem MK4

Postby Pastieman on Mon Dec 28, 2009 2:07 am

blower unit is under the shuttle panel under the bonnet mate, by the wiper motor
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Re: Heater problem MK4

Postby lyonsfiesta on Mon Dec 28, 2009 7:57 pm

hey mate i had this problem not saying its the solution but check the ignition relay its a yellow called V (5) i think..changed it on mine had no problems since .

the engine fan and the reverse light works of the same relay to so check them to
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Re: Heater problem MK4

Postby jonyb4 on Tue Dec 29, 2009 3:16 am

some one had similar problems

heres it answered:

http://www.fiestaturbo.com/forums/mk4-fiesta-heater-problem-vt181823/
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Re: Heater problem MK4

Postby THE GIT on Fri Jan 01, 2010 9:10 pm

i have the same fault on my mk4, i checked the reverse light as you said in your post which comes on then go,s straight out but im having trouble finding the relay on the car so i can change that can anyone help cheers
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Re: Heater problem MK4

Postby jonyb4 on Fri Jan 01, 2010 9:15 pm

reverse light?

this problem being spoken of is a heater problem lol
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Re: Heater problem MK4

Postby knuckles on Fri Jan 01, 2010 11:11 pm

Pastieman wrote:blower unit is under the shuttle panel under the bonnet mate, by the wiper motor


if he had a mk3 fiesta that would be helpful. :lol:

The mk4 motor is built into the heater box and is controlled by a heater resistor which is screwed on the side and has a mutliplug going into it. Very common for these to burn out over the years and cost around £25 to replace from fords.
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Re: Heater problem MK4

Postby jonyb4 on Sat Jan 02, 2010 12:39 am

lol im confused, about 2 ppl talkign aobtu completely different things lol
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Re: Heater problem MK4

Postby THE GIT on Sat Jan 02, 2010 12:51 am

sorry to confuse you fella but someone else said that the same relay powers the heater aswell as the reverse light, so i checked my reverse light and it go,s on then turns off while the gearbox is in reverse gear
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Re: Heater problem MK4

Postby THE GIT on Sat Jan 02, 2010 12:52 am

ive changed the resistor pack already
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Re: Heater problem MK4

Postby jonyb4 on Sat Jan 02, 2010 12:54 am

:s first ive heard it have anything to do with the reverse light, has replacing it solved the problem?
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Re: Heater problem MK4

Postby THE GIT on Sat Jan 02, 2010 12:58 am

lyonsfiesta wrote:hey mate i had this problem not saying its the solution but check the ignition relay its a yellow called V (5) i think..changed it on mine had no problems since .

the engine fan and the reverse light works of the same relay to so check them to


this is what i was talking about mate lol
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Re: Heater problem MK4

Postby jonyb4 on Sat Jan 02, 2010 1:21 am

yea think he was talking about a mk3 lol
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