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high emissions

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Old Aug 8th, 2021, 21:46   #1
neanderthal
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Default high emissions

volvo v50 2.0d 2007 just failed M.O.T on high emissions emitting black smoke took it for a blast still failed would some liqui moly diesel purge sort it cant afford garage at the moment.here are the codes that came up but no indication of egr etc should i look at cleaning it in case it maybe sticking or maybe my injectors are faulty but dont know how to check them(if at all)with my snap on.....DF11...can-h high speed network missing....8C20...rear fog lamp faulty signal....6F11+6F12....sunroof faulty signal....4F48....seat belt buckle rear left hand signal too low....6F83....dimmer faulty signal.....4F82....lamp,seatbelt reminder faulty signal.....DD1A....communication with rrx control module signal missing....8D06.....right hand stop lamp faulty signal.....E010.....control module internal fault.....8003.....mirror heater shorted to supply....0005....power supply from battery too low.....0003 pad/pae lamp faulty function.....ran car up to temperature then took 3 pictures of values...ime very basic with how to use a snap on solus ultra 19.4 software...cant upload values as security token missing
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Last edited by neanderthal; Aug 8th, 2021 at 22:02.
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Old Aug 9th, 2021, 09:34   #2
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Default emissions failure

here are the pictures for the above question
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Old Aug 9th, 2021, 10:45   #3
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If a diesel is clagged up enough to fail the emissions test then "taking it for a blast" is 20 or 30 miles of motoring at moderately high engine speeds, and then straight into the MOT bay while the engine is still piping hot hot hot!

If you've not done that type of mileage at at least 3000 rpm then the Italian tune up is unlikely ease things, assuming of course that is the problem.
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Old Aug 10th, 2021, 11:01   #4
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would liqui moly help and shall i buy injector cleaner if yes do i put it in the tank when its low and take it for a run or fill the tank once ive put it in.or any kit form i can use....i cleaned the egr pipe out.i couldnt get the egr valve off to check if it is sticking but the car seems to run ok...also look at the crap i cleaned out of the big plastic thing(pic1) that air pipe goes to... i didnt know how to take it apart so cleaned it out best i could...stupid me forgot to take a picture of the throttle body before i cleaned it out. as it too was bunged up
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Old Aug 10th, 2021, 15:11   #5
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To be honest that level of diesel crud doesn't look too bad.

I would make sure that your MAF and MAP sensors are clean as these can effect emissions ( use a dedicated contact cleaner/ sensor cleaner).

Whilst I am generally a fan of fuel additives I wouldn't expect too much if there is an underlying issue. Liqui Moly have a decent reputation though and for the cost its no great loss if it doesn't work. Maybe have a search for a local garage that offers terraclean which is a similar kind of thing but potentially a lot more effective (does cost more though).
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Old Aug 11th, 2021, 15:06   #6
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Default update

put a bottle of wynns cleaner in the tank cleaned all sensors i could apart from the egr valve itself(hard to get off)..went for a 22 mile drive at 300rpm and the m.o.t. centre says the emissions are now slightly higher still emitting a lot of black smoke any ideas
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Old Aug 12th, 2021, 20:20   #7
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Default elimination with emissions

still needing help in trying to work whats causing so much black smoke coming out of the exhaust...see pics is my oil level ok do i have a dpf as i was thinking of removing it and cleaning it out.or any suggestions of the cause.apart from what i have done in the above post hope some pics help others
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Old Aug 13th, 2021, 03:12   #8
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Try this:

https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1

Fill up with Shell Vpower.and go for some long drives - 50+ miles at motorway speeds.

If that doesn't solve it I don't know what will.
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Old Aug 13th, 2021, 04:16   #9
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Quote:
Originally Posted by eagle58 View Post
Try this:

https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1

Fill up with Shell Vpower.and go for some long drives - 50+ miles at motorway speeds.

If that doesn't solve it I don't know what will.
That's just repeating what has been tried already (and hasn't worked).

Op - some info here https://motorcompanyleicester.co.uk/...diesel-engine/

I think you should probably get the egr off and cleaned out, new air filter and see what effect that has.

Dpf could also maybe benefit from a clean but I suspect that the issue is before that point.
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Old Aug 13th, 2021, 08:53   #10
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Smile canH missing

The canH signal missing i think means your diag tool wont be reading any of the engine related values, which probably means your missing the most useful info.. might be worth checking the pins on the obd2 connector and clean with some switch cleaner or similar..

just a thought..
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