You lot are so helpful I thought I'd ask another question.
I have removed this part (quite easy when you know how) I can measure the 3 wirewound resistors contained therein
0.8R, 1.2R and 2.7R, there is also another componet which looks like a large diode this measures open circuit both ways so if it is a diode then its blown.Does anybody know what this part is, I am intending to just replace with some thick copper wire 18swg or similar.
Thanks
Almost certainly a thermal fuse, which has blown to prevent overheating resistors reducing your car to a smouldering heap! *DO NOT* replace with anything other than the correct temperature value of fuse. Common reasons for failure include the fan motor bearings starting to seize.
Thermal fuses are available from RS, Maplins et al, but you need to make sure you get the right one.
HTH
Chris
I think it's a temp cut-off., should be ok to by-pass
John
It is a diode and you shouldn't bypass it. IIRC it's to stop any 'spikes' the fan motor may develop at switch off, speed change etc. being transferred to the rest of the electrical system.
I've had exactly the same problem with a ZX and fixed it by replacing the diode... with a diode. I can't remember what I used though- I think it was a 10A diode of some description, it might have been 15A though.
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