Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73069
Title changed!!
Phoned couple of parts departments up in the Heelands and neither had even heard of it, they were convinced I was mad and meant MAF sensor. Saint Nick (Patron Saint of Parts) knew but had only sold 2, ever! Credit to LRA man that attended to Barry's car and Disco Mikey for telling me I'd got the wrong end of the stick, it was not the MAF sensor.
13th Apr 2011 7:28 pm
Trackman
Member Since: 16 Apr 2010
Location: Glasgow
Posts: 430
Bizz,
Yes, I was talking about adding 2 stroke to the Diesel at fill up.
If you have blanked EGR's it will not make any difference.
Years ago I used 2 stroke with Diesel and paraffin during the winter to stop it freezing. The 2 stroke was to give lubrication to the pump.
If you go to the Freel2 site there is a large discussion on this topic.
Ian
13th Apr 2011 8:05 pm
defector
Member Since: 23 Feb 2009
Location: Greater Manchester
Posts: 1471
Although a lot of people are saying that cleaning appears to have made no or little difference, this may be because the internals may be seized up due to caked up gunk and i dont think any amount of cleaning will free it. I think a more worthwhile option would be to change it for a new one, unless the sensor can be checked for operation.
I think a multimeter would show if it was working by checking the voltage/amps either whilst engine running or blowing into the hole to check if voltage/amps vary.
No variance means gunged up internally.
13th Apr 2011 8:11 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73069
My new one should be dropping onto the door mat tomorrow! Considering what I've spent trying to sort out this lack of go/heavy thirst problem it's small beer.
13th Apr 2011 8:15 pm
Russell
Member Since: 23 Aug 2007
Location: Kent
Posts: 10564
DSL once you have your new one are you going to adminster surgery on your old one to see what is inside?MY17 D5 1st Edition Namib Orange
MY15 D4 HSE Kaikoura Stone
MY12 D4 HSE Nara Bronze Sold and gone
MY11 D4 HSE Stornaway Grey Sold and gone
D3 S spec Silver Sold and gone
Tow bar, full length roof bars, side steps, tow bar storage unit, surround camers.
D4 camera club
13th Apr 2011 8:19 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73069
Will have a peer down with a torch but don't have the tech skills to see if it works. Remember I'm just a dumb ex-geologist, happiest looking at lavas coz you can hit them with a hammer & dissolve them in acid for the mass spec machine.
Although a lot of people are saying that cleaning appears to have made no or little difference, this may be because the internals may be seized up due to caked up gunk and i dont think any amount of cleaning will free it. I think a more worthwhile option would be to change it for a new one, unless the sensor can be checked for operation.
I think a multimeter would show if it was working by checking the voltage/amps either whilst engine running or blowing into the hole to check if voltage/amps vary.
No variance means gunged up internally.
I borrowed one of my engineers generic fault code reader which has a live data view as well, and that showed that my MAP sensor was varying as the car was driven. Whether it is correct is hard to tell - but went from ~1bar to ~2.5bar.Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
_________________________________________________
Disco Picture Website Here
13th Apr 2011 8:27 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26770
Well, you could just hit it with a hammer then I think the acid bath is a bit much though.
13th Apr 2011 8:27 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73069
Old sensor to go in glovebox as spare.
13th Apr 2011 8:31 pm
dick dastardly
Member Since: 29 May 2007
Location: wiggleigh bottom
Posts: 1112
gummeduppedness caused by bad fuel air mix caused by faulty maf and or map sensor.
can check vacuum with obd emc327 cheap thing 2 c if working.
must go, waxoyling the bathroom There's one wheel on my wagon, but i'm still rollin' along, it's the cherokee, they're after me, but I'm singing a happy song
13th Apr 2011 8:43 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73069
I understood the first sentence, explains my +20% fuel burn. Second sentence went waaaaaaaaaaaaay above my head. That was for the techie types.
13th Apr 2011 8:48 pm
WOODY179
Member Since: 01 Jun 2005
Location: Chesterfield
Posts: 3654
dick dastardly wrote:
must go, waxoyling the bathroom
13th Apr 2011 8:55 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73069
I wasn't going go say anything!!
13th Apr 2011 8:57 pm
Renton
Member Since: 13 Jan 2009
Location: Somewhere in the middle
Posts: 1718
When this mod goes into the wiki maybe we as this;
"The Manifold Absolute Pressure sensor (MAP sensor) is one of the sensors used in an internal combustion engine's electronic control system. Engines that use a MAP sensor are typically fuel injected. The manifold absolute pressure sensor provides instantaneous manifold pressure information to the engine's electronic control unit (ECU). The data is used to calculate air density and determine the engine's air mass flow rate, which in turn determines the required fuel metering for optimum combustion (see stoichiometry). A fuel-injected engine may alternately use a MAF (mass air flow) sensor to detect the intake airflow. A typical configuration employs one or the other, but seldom both.
MAP sensor data can be converted to air mass data using the speed-density method. Engine speed (RPM) and air temperature are also necessary to complete the speed-density calculation. The MAP sensor can also be used in OBD II (on-board diagnostics) applications to test the EGR (exhaust gas recirculation) valve for functionality, an application typical in OBD II equipped General Motors engines."
Makes you wonder if a bad EGR is the result of a dirty map sensor.............CLUB ILLEGAL CAR WASHERS
14th Apr 2011 8:07 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73069
Explains my mpg falling off a cliff last October. 10mpg bit was across a dune stint in Tunisia and normal but after that mpg & performance/drivability were dire. Will be good if I've fixed it. She's still shutting down but smile should be returned.
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during the winter to stop it freezing. The 2 stroke was to give lubrication to the pump.
