In the morning my opel corsa sport 2007 take long to start i have to switch on and of a few times then it starts but idle very high i have to switch of an on again then its better but idle hihg
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erratic idle can be many things but as the head has been worked on double check all the connectors to the injector's, vacuum lines , air intake etc have been replaced correctly and look for signs of wear, splits in the pipe work , have the OBD codes read as could have a sensor/switch issue
A similar thing happend to me turns out it was the idle rev cold switch thing> basically the switch which provides more fuel and revs when the car is cold, so that when you start the car it doesnt just die off. the switch itself is a bit mechanical and is perhaps jammed on the full on position. If it happens more when the car heats up. then it is this switch.
what you can do is start your car one cold morning and see how high the revs are, if its still high then its probablly not the switch
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