Fault Code P0100

[Narangga]

The only reference to this code I found on the forum was the post I mentioned it in 3 weeks ago. Having what I believed was a worsening case of black smoke I have been investigating why that would be.

I have had a remap recently and while this has improved fuel consumption (i.e. it is using less fuel) the black smoke did not decrease much.

I then cleaned the MAP sensor and this made a marked difference to the black smoke but did not eliminate it. Fuel consumption improved as well.

I have subsequently also cleaned the MAF sensor and this did not change the black smoke situation (as others have reported it has reduced theirs). I have also blanked the EGR this weekend.

However the Nanocom is still telling me that I have a P0100 MAF Sensor Circuit fault (historic). Concurrently to this, since I have had the vehicle, it has been very slow off idle and takes to 2000 RPM before it decides that it can actually perform. No amount of 'driving it like I stole it' in sport mode improves the 'off idle' performance.

An internet search has revealed others have similar issues although in the UK it seems to be 1500 RPM when their performance increases. Fixes have been:

the insertion of engine compartment fuse 17 - replaced mine with no change and even changed 13 also but without effect,

Cleaning MAF Sensor - yet again today without effect, and

Checking MAF Sensor plug voltages. With the engine running mine were Pin 1 (red & blue wire) 13.44V, Pin 2 (red) 5.02V, Pin 3 (white) 5.02V & Pin 4 (black) 0.02V. I thought black would have been the earth and therefore 0.

I also cleaned the plug and socket with electrical cleaner.

One post on the Disco3 site suggested unpluggin the MAF sensor and monitoring what happened. I did and there was no change in performance and no message centre or dash errors. Pushed for time I did not check with the Nanocom.

I have not had a chance to check the electrical diagram and may not even read it correctly if I did find what I am supposed to be looking for to check that my voltages are correct!

So is my next step getting a new MAF sensor or is there something else I should be checking? :( TIA.

[Grentarc]

With the Nanocom, can you bring up live values for air mass?
With a fault like that I would assume a dead MAF, but if the Nanocom can give you live values, just idling and reving the engine should make the value change, if it is stuck at one value, then I would definitely say bad MAF

[Narangga]

With the Nanocom, can you bring up live values for air mass?
With a fault like that I would assume a dead MAF, but if the Nanocom can give you live values, just idling and reving the engine should make the value change, if it is stuck at one value, then I would definitely say bad MAF

Oops - thanks Justin. Yes the live value is a big 0 at any engine speed.

[Grentarc]

Yep, I would be looking at buying a new MAF

[sheerluck]

Dale,

Post a picture of the part number on your MAF. I may have a spare you can test with to save you spending on a brand new one to find it doesn't change.

[Narangga]

Dale,

Post a picture of the part number on your MAF. I may have a spare you can test with to save you spending on a brand new one to find it doesn't change.

You mean I have to go downstairs in the dark, fighting cane toads and the like to take a photo for you :o



Oh OK then:p

[sheerluck]

That's ok, because I'm not going outside until it gets light to find the one I've got to check it's the same. :p

[Narangga]

Dodged 3 cane toads but fortunately it's too cold for carpet pythons.

Photo of PHF500101 attached as requested.

[sheerluck]

Ok, I braved the sub-Arctic winds, mozzies slightly smaller than a C-130, and a strategically discarded dog toy to find that the one I have is the same.

If you want, I can stick it in the post tomorrow, so you can give it a test, and see if it makes a difference.

[Narangga]

Ok, I braved the sub-Arctic winds, mozzies slightly smaller than a C-130, and a strategically discarded dog toy to find that the one I have is the same.

If you want, I can stick it in the post tomorrow, so you can give it a test, and see if it makes a difference.

MAF sensor - yes please. All other references in that post ARE YOURS. ;)

Do you still have the PM with my address?

[sheerluck]

.....Do you still have the PM with my address?

Sure do, it'll be on it's way tomorrow ;)

[LandyAndy]

Sure do, it'll be on it'sway tomorrow ;)
AWESOME!!!!
I love how people look after one another on AULRO:cool::cool::cool::cool::cool::cool:
Andrew

[Narangga]

AWESOME!!!!
I love how people look after one another on AULRO:cool::cool::cool::cool::cool::cool:
Andrew

So when did you intend we do the 12 month vehicle swap you talked about??? :angel: :angel: :angel:



:wasntme: :D

[sheerluck]

AWESOME!!!!
I love how people look after one another on AULRO:cool::cool::cool::cool::cool::cool:
Andrew

We've got to look after each other, no one else will!

Personally, I'd rather someone spent a few dollars on returning a loaned part, than spending $500 on a new part to find it wasn't the problem in the first place, and being no further forward. :D

[sheerluck]

Sure do, it'll be on it's way tomorrow ;)

Ok, hands up all those who didn't know it was a public holiday today? :angel:

Tomorrow Dale......:D

[Narangga]

Ok, hands up all those who didn't know it was a public holiday today? :angel:



:arms: :arms: :arms:

[Narangga]

Tomorrow Dale......:D

No worries. As I always say - you get the service that you pay for... :angel:

[Graeme]

Ok, hands up all those who didn't know it was a public holiday today?It wasn't, not here anyway.

[Narangga]

It wasn't, not here anyway.

It was a Queensland thing apparently Graeme...

[scarry]

Ok, hands up all those who didn't know it was a public holiday today? :angel:

Tomorrow Dale......:D

It wasn't everywhere,nor will it be on Wednesday.

Just a PITA for people trying to run a business:mad:

I will put my hands up high,found out the hard way:mad:

[sheerluck]

It was a Queensland thing apparently Graeme...

Or more specifically, the Logan council area, for the Brisbane show.

I'd forgotten, as my son's school is in the Brisbane council area, which is taking it's holiday on Wednesday.....

[scarry]

Or more specifically, the Logan council area, for the Brisbane show.

I'd forgotten, as my son's school is in the Brisbane council area, which is taking it's holiday on Wednesday.....

And today a few other areas as well...not just Logan

Then many people have Tuesday off,because they can.

Then Wednesday its the Brisbane area....

All fun and games:twisted:

[letherm]

Public Holidays really annoy me. :mad: I'm retired and don't get any. :p:p:p

Martin

[Narangga]

All fun and games:twisted:

And no Australia Post :Thump:

[sheerluck]

And no Australia Post :Thump:

But they were open today! The guy behind the counter didn't laugh when he told me that Express Post to your neck of the woods wouldn't get there for a few days, and I replied "it doesn't get anywhere in less than a few days any more". :angel:

I think I upset him.

[Narangga]

But they were open today! The guy behind the counter didn't laugh when he told me that Express Post to your neck of the woods wouldn't get there for a few days, and I replied "it doesn't get anywhere in less than a few days any more". :angel:

I think I upset him.

DDDDDaaaaavvvvvveeee
MMMMMMaaaaaaaaaaaaattttttttttttteeee
Legend
I'll let you know when it arrives. :)

(Translated this means: Typical Queenslander. I hope it arrives before Christmas :p)

[Ean Austral]

DDDDDaaaaavvvvvveeee
MMMMMMaaaaaaaaaaaaattttttttttttteeee
Legend
I'll let you know when it arrives. :)

(ChrisTranslated this means: Typical Queenslander. I hope it arrives before tmas :p)

:Rolling::Rolling::Rolling::Rolling:

[Narangga]

It arrived today thanks Dave :thumbsup:

Swapped them over and went for a run and the D3 is definitely quicker off the mark off idle. Previously it was at least 1 sec to get up to nearly 2000 RPM which is when it really started accelerating. Now it is less than 0.5 sec (by my reckoning) and moving from the start rather than waiting to get to 2000 revs. That certainly makes a difference in traffic.

I took the attached photos before I put Dave's unit (on the right) in. It is the first time I have seen one as there does not seem to be any photos of the internals on the internet. Given my sensor is not working is it worth me trying to move the sensor to position it similar to the one in Dave's?

[Grentarc]

Given my sensor is not working is it worth me trying to move the sensor to position it similar to the one in Dave's?

Great to hear that it makes things better!
It actually looks like Dave's one has been knocked, and yours looks to be "correct". The problem with yours is probably that you either have a broken contact or corrosion or similar in the air mass measuring circuit - that sensor you see there is just the inlet air temperature sensor.

[Narangga]

Thanks Justin. I wasn't sure if the position of the head of the probe was significant having only ever seen mine up until today.

[Narangga]

New MAF Sensor arrived today and has been fitted.

Thanks to Ean and the loan of his Hawkeye, I measured the live readings firstly with Dave's 'loaner' and then the new unit. The new unit gave slightly lower readings for the MAF from idle right through to 100kph.

Vehicle acceleration off idle is still not instantaneous but definitely better than with an inoperative MAF sensor.