Fisherman Mike Posted February 14, 2014 Report Share Posted February 14, 2014 My sister as a 07 plate Mitsubishi outlander petrol. It has this problem with hesitancy in most gears when you put your foot down the car doesn't pick up immediately and is hesitant as if dying and then takes off again. It doesn't do it all the time might be ok for a week or two and then it will be playing up for a couple of days before clearing again. If its in a high gear and you drop it down a notch or two it usually picks up so it is more prevalent under load. I've ruled out the Maf sensor and its had a recent fuel filter. If when its doing it you disengage the clutch the revs immediately return..... any one have any clues what I should check next.? I hate these modern cars with their on board computers and sensors etc. I remember when you could get every part you needed at Halfords and if it started raining when you were fitting it you could get under the bonnet and in the engine bay with it! Thanks, Mike Quote Link to comment Share on other sites More sharing options...
malkiserow Posted February 14, 2014 Report Share Posted February 14, 2014 As you know..... I am not a mechanic. However, a failing crankshaft sensor can make a car behave a bit like you describe. I'd have it plugged into a good diagnostics machine and see what code it throws up. Quote Link to comment Share on other sites More sharing options...
Gordon R Posted February 14, 2014 Report Share Posted February 14, 2014 If you are the North West, you are more than welcome to use my code reader / fault code remover. Quote Link to comment Share on other sites More sharing options...
Del T Posted February 14, 2014 Report Share Posted February 14, 2014 Cam or crank sensor ?. Have you checked the earth wiring from the battery ? Quote Link to comment Share on other sites More sharing options...
hoggysreels Posted February 14, 2014 Report Share Posted February 14, 2014 Throttle body !! Airway blocked (sensor pipe) .. Quote Link to comment Share on other sites More sharing options...
Fisherman Mike Posted February 14, 2014 Author Report Share Posted February 14, 2014 Cheers guys....I think I will persuade her to get it back to the local dealer and have a diagnostic done on it......she can afford it ! Quote Link to comment Share on other sites More sharing options...
HAYBURN Posted February 14, 2014 Report Share Posted February 14, 2014 check with code reader....could still be MAF meter..(unless you swapped with known good one) also electrical...coils..ht leads..etc under load do you hear a popping sound in the air intake.... Quote Link to comment Share on other sites More sharing options...
inthedark Posted February 14, 2014 Report Share Posted February 14, 2014 I've got diagnostic kit if you're close enough Quote Link to comment Share on other sites More sharing options...
deershooter Posted February 14, 2014 Report Share Posted February 14, 2014 My money is on the MAF senser Deershooter Quote Link to comment Share on other sites More sharing options...
bikemad24 Posted February 14, 2014 Report Share Posted February 14, 2014 check with code reader....could still be MAF meter..(unless you swapped with known good one) also electrical...coils..ht leads..etc under load do you hear a popping sound in the air intake.... Thats what id go for first. quick clean with some contact cleaner sometimes work. try disconnecting it and see it it makes any difference. Quote Link to comment Share on other sites More sharing options...
Sx3 clay breaker Posted February 15, 2014 Report Share Posted February 15, 2014 I'm betting maf I could look fine to the eye but need a diagnostic check I could be down to a rubed or broken wire ie not getting full power or a dodgy sensors she hasn't run it out of fuel since the fuel filter has she as I had this a few times with differ vechle s Atb Scott If you want to know anything else inbox me Quote Link to comment Share on other sites More sharing options...
armsid Posted February 15, 2014 Report Share Posted February 15, 2014 did this problem occur before the fuel filter change ? Quote Link to comment Share on other sites More sharing options...
Fisherman Mike Posted February 15, 2014 Author Report Share Posted February 15, 2014 did this problem occur before the fuel filter change ? yes it did... I also disconnected the MAF when it was running and the car stopped, I then cleaned it and had it tested...and its its fine. I will get her to have it looked at by the Mitsubishi dealer.. Would a faulty oxygen sensor cause these symptoms. Cheers Quote Link to comment Share on other sites More sharing options...
bikemad24 Posted February 15, 2014 Report Share Posted February 15, 2014 yes it will. im sure a few will agree Quote Link to comment Share on other sites More sharing options...
FatherandSon Posted February 15, 2014 Report Share Posted February 15, 2014 (edited) Ive just had a NOX sensor changed on my car as it was really sluggish. Its now changed the car completely. I can pull out of junctions without the fear of it bogging down! Edited February 15, 2014 by FatherandSon Quote Link to comment Share on other sites More sharing options...
activeviii Posted February 15, 2014 Report Share Posted February 15, 2014 new shape or mk2 shape? Quote Link to comment Share on other sites More sharing options...
Longchalk Posted February 16, 2014 Report Share Posted February 16, 2014 Had exactly those symptoms on my Focus. Turned out to be the cam sensor. Purpose of which is to determine when the cam is top dead centre, and regulate the injection sequence. Was very scary at junctions. until I got it fixed! Quote Link to comment Share on other sites More sharing options...
Twistedsanity Posted February 16, 2014 Report Share Posted February 16, 2014 I'm in Watford and have an obd2 reader if your nearby ? Quote Link to comment Share on other sites More sharing options...
Fisherman Mike Posted February 16, 2014 Author Report Share Posted February 16, 2014 Thanks guys for all the replies...she has had a local home tune guy out this morning he plugged in his fault code reader and it showed the cam position sensor is faulty.. apparently when they deteriorate they can sometimes work and sometimes not and the CPU will adjust fuel provision...This explains why it runs well for a time and then poorly... Downside...£144 for a OE part....or £65 for a copy....OUCH. Quote Link to comment Share on other sites More sharing options...
Cannon Posted February 16, 2014 Report Share Posted February 16, 2014 Try Amayama for Mitsubishi parts Quote Link to comment Share on other sites More sharing options...
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