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Very late Turbo boost
Posted: Thu Nov 14, 2013 11:19 pm
by oldcol
Hi. My 02 plate 406hdi110 estate has suddenly developed a niggling fault. Now i have to say that as nearly all my running is on lightly trafficked rural roads the problem is actually not a 'Problem' as such. However, until a couple of weeks back the car was running fine and in fact it still runs fine, BUT it has developed a strange, to me, fault.
The turbo is not coming on stream until over 3000rpm. A local mechanic did a diagnostic check and the only thing that came up was Crankshaft sensor and Camshaft sensor not synchronised. He put 2 new sensors in but the same fault code comes up and the turbo still does not come in until 3000rpm. Have any of you had this problem and if so how was it resolved ?
Thank you.
Re: Very late Turbo boost
Posted: Fri Nov 15, 2013 8:33 am
by Bailes1992
Sounds like the timing had jumped a tooth or two!
Re: Very late Turbo boost
Posted: Fri Nov 15, 2013 8:45 am
by Doggy
That was my first thought too. It would be sensible to at least check the timing.
Re: Very late Turbo boost
Posted: Fri Nov 15, 2013 9:44 am
by steve_earwig
And change the timing belt, tensioners etc. if it has...
Re: Very late Turbo boost
Posted: Fri Nov 22, 2013 4:18 pm
by Contigo
Re: Very late Turbo boost
Posted: Fri Nov 22, 2013 5:51 pm
by trem1
one of our very own farmers videos
Re: Very late Turbo boost
Posted: Tue Nov 26, 2013 5:13 pm
by oldcol
Problem Solved !
Big, big, big thanks to Contigo ! The problem was indeed the MAF sensor. Went around to a mates house and we spent about 10 minutes or so removing the MAF sensor from his 406hdi110 saloon and fitting it to my estate ~ instant fix. Turbo coming in just when it should again. Spent 32 quid for a new aftermarket one from a reputable motor factors, 2yr warranty, and a big smile on my face, the old girl is back to her perky self. The strange thing is that a 1600 quid diagnostic test unit did not pick the fault up.
A thank you also to my mate Eddy for the brief loan of his sensor .
Re: Very late Turbo boost
Posted: Tue Nov 26, 2013 5:16 pm
by nutski
Diagnostic kit will not show a problem with the MAF unless it is physically broken, if it has become dirty it can't read the airflow so in effect sends back false readings
Re: Very late Turbo boost
Posted: Tue Nov 26, 2013 6:17 pm
by jonsowman
Agreed, you'll only get a MAF fault if the sensor is disconnected or short circuited to either supply rail. Glad it's fixed though, well done
Re: Very late Turbo boost
Posted: Tue Nov 26, 2013 6:54 pm
by dirtydirtydiesel
Re: Very late Turbo boost
Posted: Tue Nov 26, 2013 9:58 pm
by GingerMagic
nutski wrote:Diagnostic kit will not show a problem with the MAF unless it is physically broken, if it has become dirty it can't read the airflow so in effect sends back false readings
Did you keep the old MAF? You can clean it up a bit with brake cleaner, just be careful of the thin wire bits. Give it a go and if it works again it'll make a good spare.
Re: Very late Turbo boost
Posted: Tue Nov 26, 2013 10:18 pm
by Quinny
Or use this:
http://www.maplin.co.uk/switch-cleaner-27515
It's what we radio hams use on sensitive electrical circuits.
Re: Very late Turbo boost
Posted: Tue Nov 26, 2013 10:27 pm
by jonsowman
Off topic, but M0JSN
Re: Very late Turbo boost
Posted: Tue Nov 26, 2013 10:40 pm
by Quinny
jonsowman wrote:
Off topic, but M0JSN
G8FSO.
Re: Very late Turbo boost
Posted: Wed Nov 27, 2013 12:34 am
by dirtydirtydiesel
Quinny wrote:jonsowman wrote:
Off topic, but M0JSN
G8FSO.
W.T.F
£1600.00