Recently bought an old P-Reg ford escort diesel(Td) etate, having just replaced the thermostat as the radiator was not heating up, the car now revs off the clock when the throttle is applied and released (not everytime but intermittantly) the only way to stop the reving is to switch off the ignition (difficult to start next key turn), any help would be appreciated. thanks Rob

not sure it's related but it could be the turbo oil seal leaking, we've had it on a couple of our vans, the seal leaks engine oil into the intake manifold and burns causing the revs to rise, if it goes the engine revs off the clock using all the engine oil, blowing white smoke out the exhast.

end result is blown engine as it stops then it's run dry at excessive RPM, trying to drop the clutch in gear usualy results in damaged clutch & gearbox....

good luck

Thanks I'll look there first then!