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Renault 25 - Engines - Fast idle on Renault 25 GTS
As far as I know the auto choke works fine because when standing idling the choke cuts out when warm and revs settle at about 1000rpm. However after a motorway journey the idle speed is 2000rpm. Engine temp read cold so I changed the thermostat which was rotten, but it didn't seem to make any difference except that the engine now maintains a normal temp. Cleaned the carb with redex and put some in petrol tank, but no effect on the problem.
I read that another guy found it was air coming into the engine of his megane through the inlet manifold. Could it be the same problem and can I find out without taking the thing off.
Anyone got any suggestions as to the cause of these fast revs.
Currently in simon davies's garage:
Renault Scenic II Toyota Hiace Super Custom