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1.8 (Lynx) misfire
Posted 23 May 2012 - 09:28 AM
It goes away if I open the throttle more and seems to occur less if the engine is warm. At first, I thought it might be unique to my machine (58, 75K) but a friend's company recently purchased a new one and that does the same.
Is this likely to be a mapping problem? (Fuel filter changed) Is it a potential cause for the DMF failures? Certainly not doing the drivetrain any good.
Any thoughts gratefully received.
Posted 17 June 2012 - 02:16 PM
Posted 17 June 2012 - 05:45 PM
Can you tell me if you hold your revs at 1300rpm in neutral, does your car vibrate? My cars going back under warrnety to have this sorted next week.
2015 Ford Focus Titanium
Posted 17 June 2012 - 06:52 PM
Posted 17 June 2012 - 07:13 PM
Due to it only being occasional I've not thought too much about it. I'll mention it to my mechanic friend and see what the says.
Posted 20 June 2012 - 05:35 PM
Posted 20 June 2012 - 05:42 PM
You should have a slight vibration if you hold the revs about 1300rpm.
2015 Ford Focus Titanium
Posted 07 July 2012 - 07:25 PM
Posted 19 March 2014 - 05:09 PM
Upon further reflection, I think I may have found an answer. I have noticed that my engine is also very rattly at low revs. Goes away sharply at about 2000rpm. Combined with the misfire in top gear at low revs/light throttle, is it possible that the injector timing is at fault? May this also explain the disappointiing fuel consumption? If so, any recommendations for rectification?
You have all the symptoms of my engine to a T. Exact same conditions and misfire. Although mine is a bit less frequent by the sounds of things. Over the last year it has spent a good few weeks at the dealer, and a couple of days with a diesel tuning company.
I have a 2008 mondeo 125 lynx engine like yourself. I was met with "can't see anything wrong" and "scanner reads nothing" despite having an obvious warning light when the car coughed itself into limp home mode!!!
Anyway, the one cherry of advise I did get from this, is that the injectors on this model are a bit on the crap side, and have been known to go very early on in the engine's life. (Mines coughed all the way to 58 thousand miles...)
The guy at the independent place said I should expect to change the set at some point in the not so distant future, but shouldn't focus on this because "the power steering rack normally fails first"
FORDS! WHO'D HAVE ONE!
Posted 20 March 2014 - 10:10 AM
Cleaned the MAF sensor last week. Rattle severely reduced. Possibly poorer fuel consumption, though. Too early to tell, yet. Looking for the air charge temp sensor to do next but not found it so far.
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