Hi folks, I've spent a few bob trying to sort this problem and I've still got it. Any help would be greatly appreciated.

The Engine overheating warning light comes on sporadically and the engine stutters (not always).

I've been told it's not overheating and I'v had new waterpumps, sensor and thermostat fitted.

Sometimes the warning comes on straight away before the engine has a chance to heat up.

Lately the coil light has also came on and I have difficulty starting. When I do start, I run the car for a few miles (think it's in limp mode)

Stop the car, restart and the car drives normally. It's driving me crackers.

 

If you are getting this overheat warning when the engine has just been started ( & obviously still cool ), you've had the coolant temperature sensor changed, I would suggest you have a wiring fault somewhere in the engine bay loom which is giving false data back to the engine ECU.

 

Have a good look around the coolant temperature sensor plug & local wiring for damage, then trace the loom back towards the engine ECU looking for any chafing  against anything adjacent to it.

 

Check the engine ECU electrical multi-plug for any corrosion or moisture.

Thanks PipH, that's what I thought. Will get that checked asap.