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General => The garage => Topic started by: Michelleywelly on 22 December 2011, 16:23
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As above, maximum hot temperature and not blowing hot air inside the car. does anyone know any reasons why? the relay has been re-newed and the fan is still working on numbers 2,3, and 4 by the switch. also have to give the fan a thump to get it working sometimes.
any ideas?
Cheers!! :sad:
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heat exchanger faulty or airlock in coolant
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Whats your water temp like? Also what car? Old ones suffer with dodgy bypass valves or blocked heater matrices.
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Whats your water temp like? Also what car? Old ones suffer with dodgy bypass valves or blocked heater matrices.
Hi there, thanks for the reply.
its a Mk 4 (1999) golf
she has had the tendency to over heat. but this is quite rare. is this a job for auto technicians?
i am a bit wary to send my car into garages, as they do work that doesnt need doing....or say theyve done the work when they havent. i try to do things myself. but this heater has confused the hell out of me............. :laugh:
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heat exchanger faulty or airlock in coolant
hi there, thanks for that :smiley:
how would i know for defo?? coz these garages around here charge by the hour :laugh:
even then, they tell u something else different is wrong with the car :grin:
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try bleeding it - there is a sticky somewhere - but essentially, start it from cold with the expansion cap off, let it warm up (will take ~15mins) and massage coolant hoses. Once its hot and the t-stat is open, all hoses including radiator will be hot. Switch off and put cap back on. Oh and put dial in cabin to full hot to let water/air flow.
if its still cold then its the heat-exchanger.
James
(PS - assumes that you have coolant in it???)
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Sounds like a thermostat mate. Worth a try only 6quid from s.c motor factors.
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not the thermostat.
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not the thermostat.
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Stat can cause car to overheat and under heat taking ages to get heater hot
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but some heat would come into the cabin - particularly when stationary.