Quote:
Originally Posted by mbonwick
Careful there Simon, Bob does not have an overheating problem.
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Thanks for this Michael. Having reviewed the whole thread I can see that Bob reported that the steam coming from the overflow pipe and expansion tank cap has stopped after refitting the original cap. So I agree that without steam I no longer suspect overheating.
Quote:
Originally Posted by FLYING BANANA
But with the change of the cap we no longer have any steam. As for the diagnostic check ... at a constant speed of 65 mph it stayed level at 84 degrees. Going down hill it dropped to 81 and on climbing up the hills it rose to 88. Only once did it reach 90 degrees, and that was when I pulled up at home and manoeuvred into her parking space.
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Thanks for the latest data Bob. I look forward to hearing whether the coolant loss has stopped following the change of expansion tank cap.
For an engine with a conventional thermostat, the temperature should be reasonably stable when the car is moving, whether it is coasting downhill or climbing a gradient. A variation of 7˚ is excessive. However, you have a PRT which is more complex in operation. From reading
T-Cut's detailed investigation into these I understand that the original colour coding (indicating opening temperature) can no longer be relied upon. Therefore we probably don't know which variation your car has which would make drawing a conclusion from the temperature readings difficult.
Simon