D19 - S40/V40 to 2004 - s40 1998 td misfire HELP

FLENG2008 · Mar 12th, 2008, 12:45

HELP
i have a volvo s40 1.9 td with a couple of problems first, it doesnt like starting in the morning, it needs to be cranked a few times and give it some gas to start in the mornings, then when it is started the tick over seem to drop occassionally then pick up like its missing, and it has a misfire whilst driving between 1000rpm and 2000rpm, it doesnt seem to misfire when you put your foot down and go, it misfires when your light on the throttle say doing 30-40mph, i thought it was the fuel filter so i changed that but hasent made any difference and recently it has been feeling tired and sometimes feels like your driving with the handbrake on slighlty can anyone give me some tips please many thanks

Bernard333 · Mar 12th, 2008, 14:13

I have something similar on a V70 D5 but yours seems to fit the symptoms of a possible faulty MAF even more than mine , but dont take my word for it as it could be like the blind leading the blind , I have another thread going about the MAF unit and am hoping someone can tell me if its safe to clean it using a carb cleaner spray or something similar ( dont try this yet until I get advice about cleaning it as I suppose its possible there is nothing wrong with your MAF unit and you could well cause even more problems ) . I am also going to clean out the EGR as advised by another member .

FLENG2008 · Mar 12th, 2008, 14:21

Quote:

Originally Posted by Bernard333

I have something similar on a V70 D5 but yours seems to fit the symptoms of a possible faulty MAF even more than mine , but dont take my word for it as it could be like the blind leading the blind , I have another thread going about the MAF unit and am hoping someone can tell me if its safe to clean it using a carb cleaner spray or something similar ( dont try this yet until I get advice about cleaning it as I suppose its possible there is nothing wrong with your MAF unit and you could well cause even more problems ) . I am also going to clean out the EGR as advised by another member .

thanks for the reply much appreciated

yer you can use carb cleaner on mafs i have heard that before
i will try cleaning the maf sencor later see if this helps

anymore idea's or anyone experiencing same problems??

Mar 12th, 2008, 12:45	#1
FLENG2008 New Member Last Online: Apr 10th, 2008 14:32 Join Date: Mar 2008 Location: nottingham	s40 1998 td misfire HELP HELP i have a volvo s40 1.9 td with a couple of problems first, it doesnt like starting in the morning, it needs to be cranked a few times and give it some gas to start in the mornings, then when it is started the tick over seem to drop occassionally then pick up like its missing, and it has a misfire whilst driving between 1000rpm and 2000rpm, it doesnt seem to misfire when you put your foot down and go, it misfires when your light on the throttle say doing 30-40mph, i thought it was the fuel filter so i changed that but hasent made any difference and recently it has been feeling tired and sometimes feels like your driving with the handbrake on slighlty can anyone give me some tips please many thanks

Mar 12th, 2008, 14:13	#2
Bernard333 Premier Member Last Online: Oct 20th, 2021 11:41 Join Date: Nov 2007 Location: Ramelton	Maf I have something similar on a V70 D5 but yours seems to fit the symptoms of a possible faulty MAF even more than mine , but dont take my word for it as it could be like the blind leading the blind , I have another thread going about the MAF unit and am hoping someone can tell me if its safe to clean it using a carb cleaner spray or something similar ( dont try this yet until I get advice about cleaning it as I suppose its possible there is nothing wrong with your MAF unit and you could well cause even more problems ) . I am also going to clean out the EGR as advised by another member .

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