ferguson_tom Posted October 25, 2012 Report Share Posted October 25, 2012 Hi Everyone I have been kindly given a 2.0 petrol Renault Megane from the parents its on a 53 plate it recently had a new cam belt and water pump and has now developed a fault. It sometimes struggles to start but always eventually does, also have the problem that it does not idle. When you take your foot off the acclerator it revs just drop and drop steadily like it should be then just carry on dropping and the engine cuts out, its like it just doesnt even know its got a point to idle. It does not happen every time I drive and it can sort itself out while driving as well or randomly start. It drives perfectly in every other way and isnt to much of a problem apart from have to keep my foot on the throttle at traffic lights etc. Has anyone got any ideas what it might be? Thanks, Tom Quote Link to comment Share on other sites More sharing options...
armsid Posted October 25, 2012 Report Share Posted October 25, 2012 hi,suggest you check cam timing or crank sensor the timing could be out one tooth eitherway how did it run before cambelt change? as i said advise check cam timing hope this works. Quote Link to comment Share on other sites More sharing options...
andypaint Posted October 25, 2012 Report Share Posted October 25, 2012 Renault famous for throttle sensor, get yourself a Bluetooth obd reader off ebay and download the torque app to your phone to confirm. Quote Link to comment Share on other sites More sharing options...
FarmerSim Posted October 25, 2012 Report Share Posted October 25, 2012 hi,suggest you check cam timing or crank sensor the timing could be out one tooth eitherway how did it run before cambelt change? as i said advise check cam timing hope this works. Had a pal with one that did the same thing or remarkably similar - it was the crank sensor. IIRC it was cheap(ish), and a simple job too. Diagnosed with a cheapo box from the bay, so Andypaint has the way forward! ATB Sim Quote Link to comment Share on other sites More sharing options...
ferguson_tom Posted October 25, 2012 Author Report Share Posted October 25, 2012 Thanks everyone, it was perfect before it went for the work. The people who did the belt are looking at it for me next week but i think it might be the throttle sensor as its an intermitant fault and found to stop it you just rev it hard for a couple of seconds. I think might of been upset by them doing the work if you know what i mean. Thanks for the app idea as well i will have a look asap. Quote Link to comment Share on other sites More sharing options...
Paul223 Posted October 26, 2012 Report Share Posted October 26, 2012 As already mentioned, sounds like timing is out Quote Link to comment Share on other sites More sharing options...
Bloggs Posted October 26, 2012 Report Share Posted October 26, 2012 If its intermittent the timing won't be out - as said its more likely to be one of the sensors... Quote Link to comment Share on other sites More sharing options...
ace_of_hearts Posted November 7, 2012 Report Share Posted November 7, 2012 Hey Tom i have a fault code reader if you need to borrow it Quote Link to comment Share on other sites More sharing options...
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