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Model specific boards => Golf mk2 => Topic started by: hartdub on 06 May 2009, 12:47

Title: MK2 hot runner !
Post by: hartdub on 06 May 2009, 12:47

Anyone know if the white/brown connection to the dash clocks will affect the oil buzzer light going off periodly ???
Not sure what this wire is ? (earth??)...

Also why after changing a thermostat my engine runs hotter ? even when I have blead the air from the system ?

Thanks Guys. :cool:

Title: Re: MK2 hot runner !
Post by: danny_p on 06 May 2009, 17:57

i had thermostat rage last week,   car allways ran a bit warm since fitted the ABF, so put bigger abf rad in and fans that choudl power a small wind farm and then it went and boiled ( GRRRR )  pulled it all apart looked at it most confused then tested the really quite new stat in a pan of hot water, it started opening after the water had started boiling :(   so rummaged around in toms garage and found an old ABF thermostat that opend at 82 degrees like it shoud so fitted that instead and problem went away

Title: Re: MK2 hot runner !
Post by: jezza16v on 06 May 2009, 18:21

If the thermostat you replaced was quite old its more likely a new stat will make it run a bit hotter, they get weaker with age. I replaced mine a couple of weeks ago because I figured it was running a bit cool, just above the bottom white mark. When I replaced it (with a pukka vag unit) it runs now at just below the middle marker, which is about right and the oil temp is 95-105 in normal driving. The fans should come on with the gauge between the middle & three quarter. That assumes all your senders and gauge are not telling porkies. So it may just be that your engine was running a bit cooler than spec. before you changed the stat.

Title: Re: MK2 hot runner !
Post by: dan_apps on 06 May 2009, 19:24

Quote from: jezza16v on 06 May 2009, 18:21

If the thermostat you replaced was quite old its more likely a new stat will make it run a bit hotter, they get weaker with age. I replaced mine a couple of weeks ago because I figured it was running a bit cool, just above the bottom white mark. When I replaced it (with a pukka vag unit) it runs now at just below the middle marker, which is about right and the oil temp is 95-105 in normal driving. The fans should come on with the gauge between the middle & three quarter. That assumes all your senders and gauge are not telling porkies. So it may just be that your engine was running a bit cooler than spec. before you changed the stat.

thats good to know as i thought mine was running a little too hot but it does everything you mention above and has the same figures temp wise :smiley:

Title: Re: MK2 hot runner !
Post by: hartdub on 06 May 2009, 22:07

Thanks Guys, The reason I changed the thermo stat was because the temp gauge went to 3/4 all the time. so I thought
maybe the therostat was stuck closed or something. Know it runs 3/4 to nearly full.... yet the oil never goes above 105.

any idea's ? Could it be that the gauge is dicky ? is this a common fault ? Ive ordered a digital temp gauge, will fit friday and see what it says...
could be the sendor maybe ? any helps thanks.

mike.  :huh:

Title: Re: MK2 hot runner !
Post by: gstar-dubworld on 07 May 2009, 08:16

You might as well change the temp sender while you at it, get a genuine vag item, we run our car with neuspeed thermostat/fan switch set to come in at 180 degrees, remember the cooler the engine better the punch..