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General => General discussion => Topic started by: grayGTI on 22 January 2005, 18:47

Title: mk4 over heating problem
Post by: grayGTI on 22 January 2005, 18:47

hiya......a week ago my 99 mk4 golf over heated and i checked it over and i noticed that the radiator wasnt hot at all or the pipe from the thermostat when the engine was at full temp.so i thoght it would be the thermostat so ichecked it and it was stuck shut i then fitted a new 1.started the engine left the header filler cap off and let it get hot again but its the same again the rad aint gettin even warm i also checked pipes for blocks the engine just keeps over heatin what could it be is there anyway it could have a air lock and how do i stop it or is this the symtems of a broken water pump? can i test it?...plz help im missin my car lol.

thanx for any help peep.

Title: Re: mk4 over heating problem
Post by: Dizzie on 23 January 2005, 13:36

when you take the cap of the header tank can you see the water circulating in there?

Title: Re: mk4 over heating problem
Post by: kniterider on 23 January 2005, 14:29

if youve fitted a new thermostat and the water is circulating, it points to the water pump, what model mk4 golf is it you have?? the 1800cc 20v engines are prone to water pump failure as the plastic impellor breaks down with age, sounds like this could be your problem, there about ?35 on an exchange basis at vw, but unless your any good at DIY i wouldnt attempt it...........

kid

Title: Re: mk4 over heating problem
Post by: grayGTI on 23 January 2005, 16:58

its a late 99 model v reg. the water is doin somthing in the header tank not sure wat it is suposed to do but it boils up in there. all i no is the engine is over heatin and its not gettin into rad much the rad stays stone cold but you can feal the rad inlet pipe gettin a little warm.it just dont go round so thats what made me think its the pump....so to swap the whole pump its only ?35 or is that just for the broken part on the pump. sorry if i sound dumb lol but im not used th vw engine yet only had it 5 months.

Title: Re: mk4 over heating problem
Post by: topher on 23 January 2005, 21:23

Agree with above, sounds like the pump.. the plastic blades just break with age. Usual practice is to change them at the same time as cambelt, since you have easy access then.

Title: Re: mk4 over heating problem
Post by: grayGTI on 25 January 2005, 19:07

had a mobile grease monkey come out today to have a look and hes taken the car :( the head gasket had died so im now skint for a few weeks.....