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post #1 of (permalink) Old 3rd January 2006 Thread Starter
simon davies
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Angry 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.
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