uk_scoob

ive been having a few problems recently with overheating . the water pump started to leak , so i changed that and the belt and put a new thermostat in it while i was there.

now after all that its still overheating.

ive removed the thermostat completely and it now doesnt over heat but the gauge reads next to zero temperature , sometimes moving up to the half.

any ideas what the problem is

exvaux

iTrader: (1)

air lock in the system maybe?

jaytc2003

iTrader: (1)

when you put the new pump in did you make sure it rotated cleanly both ways without friction?

I recently did mine with the engine in the car and the gasket got caught when I put the new water pump in. Result was the pump wouldnt rotate freely. Luckily I checked before I did the belt and tensioner!! lol

Failing that, when I got mine back up and running it did overheat at first (have power fc and commander and temps was in the high 90's initially) but took it for a run and it soon settled. checked to top it up the following day when cool

uk_scoob

ive drained it , refilled it lots and lots of times . making sure there are no air locks., the thing is ive tried to different thermo stats.. and it makes no difference at all . with a thermo stat in it overheats, take it out and it doesnt ,
i just cant understand it

and yeah i checked the waterpump as i put it in

james-wrx

I have exactly the same problem and I have even had it chemicaly tested for head gasket failure and it passed, but garage is convinved it's the head gasket!

uk_scoob

yep ive had mine tested for it also and both times they say it cant be .

uk_scoob

and the heaters will only blow warm air , not hot .. they will blow cold tho .

it does seem as if its airlocking , but there is no way it can be . lol

james-wrx

[QUOTE=uk_scoob;7291808]and the heaters will only blow warm air , not hot .. they will blow cold tho .

it does seem as if its airlocking , but there is no way it can be . lol[/

my heaters blow hot until the water level drops!

Can still be HG it might only do it under heavy boost!

uk_scoob

but then explain why it doesnt do it while its not got the stat in it . this is what i dont understand..

the fact it doesnt do it when the thermostat isnt there suggests to me that its a problem with the thermo stat, but ive changed it twice .

james-wrx

Dont know mate think we need an expert!