vendredi 2 mai 2014

Another MGTF overheating question

Since I replaced the underfloor pipes with stainless, I’ve been having overheating problems.

When I replaced the pipes, I flushed the system out with dishwasher tablet powder, bled it 3 times and the water pump was replaced just over 1000 miles ago.

My 2002/3 MGTF 160 runs for about an hour with the water temp just below the middle (heater turned off) then then needle goes to ¾ fan comes on at just over ½.

Turning the heater on drops the temp immediately, so the flow would appear to be OK.

The header tank fills to overflowing, but drops back fairly quickly after I turn off the engine.

I’m in the middle of fitting aircon, and the aircon rad is quite big, and just in front of the engine one, would this be sufficient to cause overheating, or should I be looking elsewhere ?





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