Engine: D5: - D5 Missfire and Black Smoke when warmed up

MOTION32 · Feb 21st, 2011, 20:45

Help needed please. 2002 D5 V70 .
Starts fine cold or hot. When cold starts and runs well until car warms up (5 to 10 miles or so, or if left for a few minutes when in between cold and warm like heatsoak) then developes a missfire and consequent lots of black smoke when running on an even/light load. If car accelerated hard it clears and runs fine. Seem like it may be overfuelling or is it injector problem?
Any advice VERY welcome
Dave W

S60D5-185 · Feb 22nd, 2011, 09:01

Quote:

Originally Posted by MOTION32

Help needed please. 2002 D5 V70 .
Starts fine cold or hot. When cold starts and runs well until car warms up (5 to 10 miles or so, or if left for a few minutes when in between cold and warm like heatsoak) then developes a missfire and consequent lots of black smoke when running on an even/light load. If car accelerated hard it clears and runs fine. Seem like it may be overfuelling or is it injector problem?
Any advice VERY welcome
Dave W

Blocked or Faulty EGR valve can give you those symptoms so do a search on that.

Cheers Darryl

fungus · Feb 22nd, 2011, 11:27

+1.....

MOTION32 · Feb 22nd, 2011, 18:27

Thanks for response. Had recently fitted genuine exchange EGR valve and also the operating solenoid. Also a new Bosch MAF. (all done to cure permanent limp home mode. MAF eventually cured that problem. Was all OK after that for a month or so.
Dave

Dynosaur · Feb 22nd, 2011, 20:50

Intercooler.
Not a big job - but better done with assistance.

Feb 21st, 2011, 20:45	#1
MOTION32 New Member Last Online: Feb 28th, 2011 23:14 Join Date: Feb 2011 Location: somerset	D5 Missfire and Black Smoke when warmed up Help needed please. 2002 D5 V70 . Starts fine cold or hot. When cold starts and runs well until car warms up (5 to 10 miles or so, or if left for a few minutes when in between cold and warm like heatsoak) then developes a missfire and consequent lots of black smoke when running on an even/light load. If car accelerated hard it clears and runs fine. Seem like it may be overfuelling or is it injector problem? Any advice VERY welcome Dave W

Feb 22nd, 2011, 11:27	#3
fungus Member Last Online: Oct 26th, 2022 09:12 Join Date: Jul 2007 Location: Spalding	+1..... __________________ Current: S60 D5 SE geartronic 2004 161K Current: C70 T5 GT automatic 2000 192K Past: S60 D5 SE geartronic 2004 48K last seen upside down in a field Past: V40 2.0T Sport Lux Auto 2003 171K Past: 340DL

Feb 22nd, 2011, 20:50	#5
Dynosaur GoldMember Last Online: Mar 10th, 2016 17:58 Join Date: Aug 2008 Location: SomewhereInTheSouthOfEngland	Intercooler. Not a big job - but better done with assistance. __________________ S80 D5-S manual (facelift) MY04 (avec V70 driver's seat)

Feb 22nd, 2011, 18:27	#4
MOTION32 New Member Last Online: Feb 28th, 2011 23:14 Join Date: Feb 2011 Location: somerset	Thanks for response. Had recently fitted genuine exchange EGR valve and also the operating solenoid. Also a new Bosch MAF. (all done to cure permanent limp home mode. MAF eventually cured that problem. Was all OK after that for a month or so. Dave

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