VW GOLF MK5 GTI OVER HEATING

[vernymac]

Hey guys

so i need some advice,

My mk5 gti started over heating yesterday (thank god it was close to home) the temp gauge jumped up over about 2 clicks over the 90deg mark i then switched the car off and heard the fans come one let it sit for about 5min then started again and as i drive it sort of started going up when i stopped the car and let it idle.

I checked the oil cap for any mixing of fluids didnt see anything i also checked the if there was any leaks and coolant in the water bottle everything seems fine.

Which direction should i start in by checking all possible issues that could be the cause of the car over heating?

will have car scanned this weekend to see what fault codes come up but any advice on where to start looking would be appreciated!!

Thanks Gents

[Wolf Mk2 16V]

Something sudden like that, start with the thermostat...

[Howie-WP]

Water pump?

[vernymac]

Water pump?

thats what im thinking as well, but havent seen any fluid loss or could be a bad sensor maybe or something silly

[jaredm]

How is the idle? Had a similar issue when the PCV was faulty.


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[vernymac]

How is the idle? Had a similar issue when the PCV was faulty.
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Hey bud PCV seems fine, had it checked by a buddy of mine...

Just had a look now what a F#*k of a job it is to change thermostat lol and waterpump... and its going to cost an arm and leg to do

[panic-mechanic]

Change pump and thermostat. AroudnR7k for the parts and another 2-3k for labour.

[Wolf Mk2 16V]

Change pump and thermostat. AroudnR7k for the parts and another 2-3k for labour.

Ouch!

[jimbogp]

what is the mileage on the car.

While replacing the waterpump you might as well replace the cambelt, tensioner, and 2 rollers one time.

[vernymac]

Jeeez thanks panic for killing my plan of doing downpipe and software lol

car has 273xxxkm on the clock and full service history with VW till 262xxxkm I did the service last weekend which i did fuel filter,oil filter, oil, plugs, cam follower

so was planning doing coolant flush and brakefluid flush in a week or to

[Noel_el]

Yes, changing the thermostat is quite a job but do able with patience. Did mine a few months back with OEM part(R800) and two bottles of anti freeze.

[panic-mechanic]

That is why I gave that price. While you are in there you do the timing belt and tensioners.

[vernymac]

Yes, changing the thermostat is quite a job but do able with patience. Did mine a few months back with OEM part(R800) and two bottles of anti freeze.

need to get all the parts together and sit a weekend and get it done.... drove the car yesterday and today sat in traffic etc seems fine now fans coming on heat gauge staying at 90 no issue could be right maybe just a sticky thermostat

[vernymac]

That is why I gave that price. While you are in there you do the timing belt and tensioners.

That requires some saving 10k is alot... but it has to be done

[Noel_el]

Mine was stuck OPEN, used to take very long to warm up and if you on the open road it should stay around 60/70 degC.

[vernymac]

Mine was stuck OPEN, used to take very long to warm up and if you on the open road it should stay around 60/70 degC.

rather be open then closed bru, over heating is a killer