InKontrol Posted January 21, 2014 Share Posted January 21, 2014 Evening all, I appear to have a bit of a strange problem with the diesel engine at the moment, it's not a massive issue but it odd nonetheless. When the outside air temperature is 5 degrees or less the engine sort of feels like it's misfiring in one or two cylinders. I have an example of when it happens:Start the car up, engine is idling fine no misfiring or surgingSet off at up to max speed of 20mph to the point where I get to the end of the road (approx 450 yards) Trying to maintain the speed is difficult at around 1800rpm, because the engine and car surge back and forth as if the engine is misfiringEngine is fine by the time I have pulled out of the junction to join the main road I have noticed that taking it up to 2500rpm in 2nd after startup seems to clear the throat so to speak, and the engine stops surging, I have also noticed that it doesn't happen if I was to leave the engine idling for a minute or two.Could it just be that the temperature is so low and diesel engines are rough as hell when cold? Quote Link to comment Share on other sites More sharing options...
Stoney871 Posted January 22, 2014 Share Posted January 22, 2014 Could be a problem with the MAF sensor on the air intake pipe after the airbox. Misreading of the intake air temp or pressure may be causing the uneven running. Quote Link to comment Share on other sites More sharing options...
InKontrol Posted January 22, 2014 Author Share Posted January 22, 2014 The car has about 5 months warranty left, would it be worth removing it and cleaning it with MAF cleaner or just take it in the garage? Quote Link to comment Share on other sites More sharing options...
Stoney871 Posted January 22, 2014 Share Posted January 22, 2014 If still under warranty I'd take it in and let them take a look around. Quote Link to comment Share on other sites More sharing options...
jeebowhite Posted January 22, 2014 Share Posted January 22, 2014 Agreed, unless you have a lot of disruption from it, the garage should be the first port of call. otherwise if its too much agro, give it a clean and then if the issue persists, return it to them for review. Quote Link to comment Share on other sites More sharing options...
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