Originally Posted by ourcar
I'd imagine it should not completely close or you would get no air to the TB.
If it is over revving, then it is getting too much air, check that there are no leaks prior to the TB.
It is possible that your MAP sensor is busted, worth getting checked.
Hi, I have done a search over the last few days, looking for info on why my Megane is over revving and surging at idle.
Up to now I have found various posts but none that are the same prblem as mine, or that have been solved.
When the car is started, the car idles around 1600 - 1800 rpm, no misfires or any other problems. Once driven the car still idles at high revs, but also surges from 1000rpm upto 2800rpm.
So far I have removed and cleaned the throttle body
, checked and improved the throttle body
to manifold seal, tried a different MAP sensor
, tried a different set of coil
packs, checked for any other air leaks on the intake system. All to no avail.
I have ordered an ELM 327 diagnostics able and software to check any fault codes and that should arrive tomorrow, my galletto arrived today!
Any help greatly appreciated
Forgot to mention its a 2004 1.4 16v megane, 54,000 miles
Sat Jun 18, 2011 4:50 pm