Heater only works on 4.

[dodge_vdub]

Did you buy brand new or 2nd hand?? Could be a faulty?
I'm assuming from your description you brought this one??


Not sure on spec of your golf but mine has air con so I've got this one

[Povey]

Yeah I got mine second hand but was assured it worked on all settings, I think I'll email the seller and see what they can come up with.

My car is a 1.8 gl non aricon so mine is the top one.

Do you think that's the problem that I need a new resistor to make all 4 settings work? 

[dodge_vdub]

Best bet is to buy a brand new one and fit it, if that doesn't work then it could be something else maybe the switch itself, I'm sure I read on here somewhere that someone's switch wasn't making full contact on contacts which gave him a similar problem.
Either that or ask a mate with working heating on their mk3 if you can try their resistor if it works you know you have brought a faulty resistor.

[Povey]

After some digging iv found a few people are saying try the switch, I'll have a play and try find someone local with a working heater and try that
:-)