D5 (D5244T to 2005) - Engine lumpy when cold - EGR valve?

v_matt_v · Jan 6th, 2011, 22:15

Hello everyone,

I wonder if anyone experienced lumpy engine when cold. I've got a D5 V70 which is lumpy and smokes when it's cold but once the engine is warm everything works perfectly. The injectors, the glow plugs and the turbo were replaced but the problem remains.

I'm suspecting either faulty EGR valve or one of the exhaust valves sticking. The engine compression is spot on.

I appreciate your advice.

Matt

outnumbered · Jan 6th, 2011, 23:32

hi matt.
in the cold spell that we have just had when it was down to -7 mine was starting like a bag of bolts lots of smoke and rough idle. prior to that no problems. and as of today no issues with it being slightly warmer.
mike

v_matt_v · Jan 7th, 2011, 07:08

Yes, the start will be louder but there shouldn't be any power loss. There is definitely an issue.

beale · Jan 11th, 2011, 15:01

ive had the same prob with d5 engine very poor power and black smoke then when warm works ok been told either injectors or injector board?not sure myself .any ideas please

noscralc · Jan 11th, 2011, 16:13

noticed that during very low temperatures recently my v70-D5 was slow turning over but fired up ok but was a lot noisier than normal untill it warmed up-did'nt notice any loss in power althouh tended to take it easy until warmed up.starts and seems normal now temperatures are up a bit so can only think that is how they are,

Auldgit · Jan 12th, 2011, 17:09

Got a similar problem with my V70 ('02 80k) Good as gold until the cold snap, then lumpy and (sort-of) misfiring at 1000-1100 rpm when starting off. Starts ok, and once warm runs just as well as ever. Bit warmer here today too, but not used the car, see what happens tomorrow. I've put a post on the main V70 forum, but only one reply so far.

grainqey · Jan 12th, 2011, 21:54

diesels do tend to sound like a bag of spanners when cold, just imagine how bad it'd be if you had 4 cylinders instead...eurgh i hate to think lol! technically though at idle the D5's do idle on 4 cylinders alternating between no ignition on 1 and 5 or 3 and 5 (cant remember which cylinders its on now)

is it defo black smoke or just grey? mine smokes when cold if i boot it from the lights, leaves a nice cloud in the rear view until it's got to about half a bar of engine warmth :P

if it feels under powered while cold but fine when warmed up then it'll be the egr or possibly something to do with fuel lines/filter/injectors but i doubt it, look for sludge round an injector under the engine cover
HTH

Jan 6th, 2011, 22:15	#1
v_matt_v Volvo Fan Last Online: Jul 27th, 2023 23:35 Join Date: Mar 2009 Location: Edinburgh View Photos By: v_matt_v	Engine lumpy when cold - EGR valve? Hello everyone, I wonder if anyone experienced lumpy engine when cold. I've got a D5 V70 which is lumpy and smokes when it's cold but once the engine is warm everything works perfectly. The injectors, the glow plugs and the turbo were replaced but the problem remains. I'm suspecting either faulty EGR valve or one of the exhaust valves sticking. The engine compression is spot on. I appreciate your advice. Matt

Jan 6th, 2011, 23:32	#2
outnumbered Lunatic from Wakefield Last Online: Apr 16th, 2023 06:33 Join Date: Dec 2004 Location: wakefield	hi matt. in the cold spell that we have just had when it was down to -7 mine was starting like a bag of bolts lots of smoke and rough idle. prior to that no problems. and as of today no issues with it being slightly warmer. mike __________________ 2012 volvo xc90 Executive Buccaneer Bermuda 2021

Jan 7th, 2011, 07:08	#3
v_matt_v Volvo Fan Last Online: Jul 27th, 2023 23:35 Join Date: Mar 2009 Location: Edinburgh View Photos By: v_matt_v	Yes, the start will be louder but there shouldn't be any power loss. There is definitely an issue.

Jan 11th, 2011, 15:01	#4
beale New Member Last Online: Jan 11th, 2011 15:01 Join Date: Jan 2011 Location: barnsley	ive had the same prob with d5 engine very poor power and black smoke then when warm works ok been told either injectors or injector board?not sure myself .any ideas please

Jan 11th, 2011, 16:13	#5
noscralc Senior Member Last Online: Mar 26th, 2024 19:49 Join Date: Feb 2010 Location: worksop	noticed that during very low temperatures recently my v70-D5 was slow turning over but fired up ok but was a lot noisier than normal untill it warmed up-did'nt notice any loss in power althouh tended to take it easy until warmed up.starts and seems normal now temperatures are up a bit so can only think that is how they are,

Jan 12th, 2011, 17:09	#6
Auldgit Master Member Last Online: May 12th, 2024 17:38 Join Date: Jan 2006 Location: Chester	Got a similar problem with my V70 ('02 80k) Good as gold until the cold snap, then lumpy and (sort-of) misfiring at 1000-1100 rpm when starting off. Starts ok, and once warm runs just as well as ever. Bit warmer here today too, but not used the car, see what happens tomorrow. I've put a post on the main V70 forum, but only one reply so far.

Jan 12th, 2011, 21:54	#7
grainqey Master Member Last Online: Feb 23rd, 2021 00:40 Join Date: Jan 2009 Location: rotherham	diesels do tend to sound like a bag of spanners when cold, just imagine how bad it'd be if you had 4 cylinders instead...eurgh i hate to think lol! technically though at idle the D5's do idle on 4 cylinders alternating between no ignition on 1 and 5 or 3 and 5 (cant remember which cylinders its on now) is it defo black smoke or just grey? mine smokes when cold if i boot it from the lights, leaves a nice cloud in the rear view until it's got to about half a bar of engine warmth :P if it feels under powered while cold but fine when warmed up then it'll be the egr or possibly something to do with fuel lines/filter/injectors but i doubt it, look for sludge round an injector under the engine cover HTH

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