Running hot problem?

[jonnyd61]

Cheers for the help lads turned out to be a dodgy thermostat even though it was brand-new

[House]

Further to this,

I always drill a 5mm hole in thermostats to make sure any trapped air comes out the block.

We also found when on the rollers mapping my car that the water pump doesn't circulate enough on idle to move the water around the system, we had to set an idle control into the ECU to up the revs by 60-70 revs per degree over 95, so by the time it's at 105 the idle is about 1400 and this get the water pump moving more, we were finding the rad fans never turned off without this, within 2 minutes of the revs rising the fan turns off. Just a side thought.

[kevy.m]

Correct me if I'm wrong doesn't the water from the engine (hot) go through the thermostat back to the top hose on the rad
then the water gets cooled then go out the bottom hose to the water pump to get cooler water to the engine..........

So the bottom hose will always be cooler than the top

Also you could try removing the thermostat & put it in a cup an fill it with boiling water & see if it opens

Cheers for the help lads turned out to be a dodgy thermostat even though it was brand-new

Glad you got it solved thermo after all eh