Air regulator
Hi Rob,
you seem to have the same problem, I have found that my air regulator is sticking. If you pinch the outlet pipe of the regulator closed (highlighted with red arrow) when the engine is cold then the rpm should drop (possibly 250 rpm) if it makes no difference then the air regulator must be stuck closed. Mine is sticking open resulting in a high tickover when warm, hope this helps. The yellow arrow is one of the "idle up" solenoids but I have no wiring diagram and don't know what energises them? On my car with no air con they seem never to operate?
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