AO Platinum Member
Join Date: Feb 2002
Location: The land that Time forgot
It sounds like the fan is working okay, since it comes on when the engine gets hot, cools the engine down and then turns off again.
What temperature is teh engine when it cuts out? Is it off the scale? If it's just 85-90C on the gauge (the gauge usually reads low) then it should be fine. 90C on the gauge is around 100C in reality.. and the engine should be still running, even beyond that temperature.
When it's hot though, the engine will lean out the mixture.. if there's anything weak in the system it could be starving the engine of fuel.
I'd start by looking at the MAF sensor to make sure it's clean. It may be worth cleaning the injectors too (put 250ml of paraffin or injector cleaner in the next tank of petrol).
It could be an electrical issue (coil?) but there are 4 coils and if just one was breaking down, the engine would probably still run.. so look at fuelling problems first.
No bullets for Chaingun..