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Old 16-08-2019, 12:07   #1
SuperJon
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Smoky Lancer 2.0 DiD - help and advice please?

Hi there,

I've had this issue for a while now so hope that someone can shed some light on what I might do to fix the issue...here goes.

I own a 2010 Lancer Juro 2.0D - it's done 76k, has been serviced at all intervals. I purchased it about 2 years ago and it has ran beautifully for the initial year and a bit but, towards the end of last summer, I noticed that it ran fine but then started to stutter and emitted loads of smoke - and I mean clouds - from the exhaust. I had a check of all of the air intake pipes and decided after doing a few checks and research that I should also replace the MAF sensor which I did. It ran well for a while but, whilst on holiday in April, the symptoms started again so I took the connector off the MAF sensor and it has been running OK(apart from the expected engine light from not having the MAF sensor connected) - a bit sluggish than normal but certainly better than when it stutters and smokes like a Victorian Steam Train!

Over the summer I've re-checked the intake pipes and actually the whole air system for split pipes and even swapped out the MAF sensor for the old one I kept but to no avail.

I guess I could be really unlucky and have two faulty MAF sensors but my instinct tells me it is more than this and I just wanted to check if anyone out there has had similar issues like this and what they have done to fix it?

Thanks for your help.
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Old 16-08-2019, 12:50   #2
LEGNUMVR4
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Why did you swap back to a maf you knew was faulty?
Get a known good unit and see how it runs then
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Old 16-08-2019, 13:11   #3
SuperJon
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Quote:
Originally Posted by LEGNUMVR4 View Post
Why did you swap back to a maf you knew was faulty?
Get a known good unit and see how it runs then
Sorry - I didn't know for sure that the original MAF was faulty but swapping it out for a new one was one of the potential solutions that this forum suggested.

I have to presume that the new one is a good working unit and only changed it back to check that the outcome was the same - it was!

Last edited by SuperJon; 16-08-2019 at 13:12..
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Old 16-08-2019, 14:33   #4
r3k1355
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You need to read fault codes, on a diesel engine it could be a number of different things.

Don't just go swapping stuff out blindly.
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Old 16-08-2019, 15:49   #5
SuperJon
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You need to read fault codes, on a diesel engine it could be a number of different things.

Don't just go swapping stuff out blindly.
Sorry, should have said, when it stutters and blows out smoke - it doesn't trigger a fault code. It only does this when I remove the MAF sensor plug.

With the greatest of respect - I was swapping things out blindly, I was trying to identify the problem.

Wow - they are a bit edgy on here - just looking for some friendly advice!
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Old 16-08-2019, 16:11   #6
grants
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Wow - they are a bit edgy on here - just looking for some friendly advice!
Friendly advice was to read the fault codes with a code reader. It plugs into OBDII port

Or take it to a dealer
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Old 16-08-2019, 16:21   #7
SuperJon
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Friendly advice was to read the fault codes with a code reader. It plugs into OBDII port

Or take it to a dealer
I've got an OBD reader but there wasn't any codes! That's my point really.

Seriously - if there are any helpful people out there who might know the cause of this then please reply but otherwise....

Last edited by SuperJon; 16-08-2019 at 16:23..
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Old 17-08-2019, 15:31   #8
LEGNUMVR4
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Have you tried the vw forums ?
If you have no code and the maf is causing differences then you should.....
If that doesn't work people seem to have problems with your vw engine to do with egr coolers/turbos .
Where did you get the new maf from?

Last edited by LEGNUMVR4; 17-08-2019 at 15:48..
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Old 19-08-2019, 11:02   #9
r3k1355
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Originally Posted by SuperJon View Post
Seriously - if there are any helpful people out there who might know the cause of this then please reply but otherwise....
Otherwise what exactly??

You're the one needing help here, no-one is under any kind of obligation to provide assistance so maybe wind back the attitude or you'll just get told to **** off.

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I've got an OBD reader but there wasn't any codes! That's my point really
A cheap ten quid ebay reader or a proper unit?? Cheap units can't read all codes, there could be several on there it just doesn't understand.

Can it read live data?
Can it see what each sensor is doing when the car starts to splutter?
Can it see what each sensor is displaying at idle, part load and engine off?
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Old 19-08-2019, 11:14   #10
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Originally Posted by r3k1355 View Post
A cheap ten quid ebay reader or a proper unit?? Cheap units can't read all codes, there could be several on there it just doesn't understand.

Can it read live data?
Can it see what each sensor is doing when the car starts to splutter?
Can it see what each sensor is displaying at idle, part load and engine off?
May I add;
Reader needs to CAN compatible
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