overheating problem

[Tommyk]

Hi guys basically since my car was mapped at td and had a new triple core half rad I've had heating issues. It's not down to the engine as this is the third engine it's happened on now. Basically if I give it some thrashing temp gauge goes rite up and heaters go cold and then heaters come warm again and it goes back down. Also spits water out the cap or somewhere but I've put a new high pressure cap on and all bleed up perfect but still no difference any ideas?

[Gainzy]

Is your rad fan kicking in at any point?

[Tommyk]

Yea kicks in fine mate and on idle and normal driving it fine and even fine when just blit it about it a when I give it some hammering throught the gears up to speed it happens

[Gainzy]

Check your waterpumps ok no leaks or anything you getting any smoke or out?

[Ryan_EP82 GT]

Airlock in the coolant system? Have you bled it to see if that could be an issue?

also try a low temp thernostat with your half rad for future

[Ryan_EP82 GT]

sorry only seen the bleeding bit!

[Tommyk]

Yh it's bleed up fine and it's had 3 different water pumps obv with the 3 engines so not tht. I wondered if a bad map could cause this and unless it's a faulty rad

[akyakapotter]

Yh it's bleed up fine and it's had 3 different water pumps obv with the 3 engines so not tht. I wondered if a bad map could cause this and unless it's a faulty rad

Whip the thermostat out and take it for a spin see if it still dose it

[Tommyk]

Ok mate Il try that

[russ78]

i had an issue a while back with the fan polarity being the wrong way round check when your fan cuts in its spinning the right way