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over heating
Posted: 16 Aug 2009, 15:58
by timthetrader
I had a prob with overheating on the way up from forest of dean to cheshire last weekend and before I set off for home I opened the header tank top and looked at the water which did seem to be over filled and I emptied it a little and the top seemed to be loose when I undid it so I made sure I tightened when I put it back on and drove home with no heating probs! Today I've been for a drive and have overheating issues again! I had a new thermostat put it last month! Any ideas?
Re: over heating
Posted: 16 Aug 2009, 16:02
by R0B
the water in the header tank should be filled to the brim.(im assuming you dont mean the one behind the number plate flap)so cant be over filled.you could have a dodgy sender...
which did seem to be over filled
Re: over heating
Posted: 16 Aug 2009, 16:12
by timthetrader
Thanks Rob! One more thing the guage is nearly at max and I had to put the heater on full blast to try and keep the heat down but while it was very hot I stopped and openned the expansion tank behind the number plate and the water was cold? Also would it not help by removing the thermostat in the short term?
Re: over heating
Posted: 16 Aug 2009, 16:24
by R0B
the water in this tank will be cold as the system sucks this up should it need it.is your rad fan kicking in...
Re: over heating
Posted: 16 Aug 2009, 17:34
by timthetrader
R0B wrote:the water in this tank will be cold as the system sucks this up should it need it.is your rad fan kicking in...
Cant hear it kicking in and today it was very very hot but I didnt hear it! Is it connected to a sensor and does it has a fuse and if so what fuse no is it?
Re: over heating
Posted: 16 Aug 2009, 18:02
by R0B
the switch (screwed into the rad) should kick in once a certain temp has been achieved.if its not kicking in you need to test it.
to test it.just take off the wires to it and touch them together.if the fan comes on.then chances are it is the switch that is faulty.and yes it could be a fuse but im not sure which one it is..
Re: over heating
Posted: 16 Aug 2009, 18:15
by windysurfer
Was your new thermostat a genuine VW one?
Pattern one's are sometimes not the best
Re: over heating
Posted: 16 Aug 2009, 18:19
by xpress
I concur with patten thermostats not always working properly, I had this on another car.
Re: over heating
Posted: 16 Aug 2009, 18:51
by timthetrader
windysurfer wrote:Was your new thermostat a genuine VW one?
Pattern one's are sometimes not the best
Im going to ring the garage i had the work done in the morning! Thanks for all your help.