E46 Limp Mode 320D

[cf_corp]

Hi,

My 320d developed a problem where its got no boost under full throttle. it feels dead, it just started to day, i removed the plug for the maf and it didnt make any difference. I have inpa is there anything that can be done there? the dde3.0 doesnt work with inpa on my car but. anything it could be, my car was really low on fuel at the time but i doubt that would make a difference, anything i can check ior anyway of getting codes via inpa without going into dde module. There are no EML lights etc

[Wash]

Yes, check for the codes first. Have you tried cleaning out the EGR valve?

[cf_corp]

hi,

egr valave was cleaned and then disconnected a few months ago,

How do i read the codes with inpa if the DDE 3.0 unit isnt comaptible with my 136bhp m47, is there somewhere else i can see it, or get live readings through the instrument cluster module with inpa?

[robocoupe]

Is it an auto?

[cf_corp]

nope manual

[marc l]

You can get live info on the instrument cluster but its only coolant temp, mpg ect. So don't think that would help.

Have you tried plugging the egr back in? It def sounds like you needs the codes read and cleared

[robocoupe]

If you are able to, get your transmission speed sensor checked.

[cf_corp]

ok so ill try using dis but my lappy i have it on is so slow, but i think that works with the dde3.0 failing that i will take it to a local indy with carsoft

[cf_corp]

Im gonna have to try and get the codes read, however, i noticed that there was no pwer in my car when i started my 35 mile drive to work, then after being on a long straightish road cruising at 60mph in 5th i noticed when i floored it, the car leapt into life, i wasnt sure why, i even slowed down at junctions and floored it and there was that familiar smooth power delivery, after about 5 mins though i noticed the car started chugging when i floored it and eventually it went back to miserable mode. I wonder: my car was low in fuel, i mean 9-10 mile range on the trip computer low, i was going down to fill it up, i wonder if its a fuel issue? whether its restricted or something? as i was driving on a straight maybe it built up in the lines or something? how would i check/confirm this other that changing the fuel filter, my filter being the one in the engine bay as opposed to the one under the car.

[CliffThomson]

If you look in the INPA menus, there are various versions relating to the DDE for each of the 320d lumps. Maybe you've got the wrong software version onboard, or need a later version. If you do let me know, may be able to help. Someone on here posted a link not long back listing a download for a version that covers all the DDE versions for the 2.0 diesel lumps. A forum search may help.

It's a shame you're so far north, i'm in Co Kerry at the moment, and you could have copied my install media.

[cf_corp]

hmm dont suppose you have the link to that topic, ive been searching but to no avail, although a google search turned up a dde 3.0 adding ipna to the 136bhp guide from bimmerforums, but that thread you mentioned seems very interesting if i can find it

[cf_corp]

damn, just read the codes it says air mass meter too small, if i clear it, the error stays away until i rev the car a bit, then rescan for codes it reappers as air mass meter, error currently active. replace the MAF then.

[B0B]

damn, just read the codes it says air mass meter too small, if i clear it, the error stays away until i rev the car a bit, then rescan for codes it reappers as air mass meter, error currently active. replace the MAF then.

You can confirm it by unplugging the maf because if it's not connected the car runs on preset values, if it runs better with the maf disconnected it will confirm you need to replace it.

[cf_corp]

it kind of runs the same, but witout the chugging, i was looking at the live data from inpa before i patched in the dde 3.0 ECU compatability, the maf was reading a crazy value like !20.33 etc and not changign with revving, unlike the other sensors

Edited 30 Oct 2012 by cf_corp

[edber]

it kind of runs the same, but witout the chugging, i was looking at the live data from inpa before i patched in the dde 3.0 ECU compatability, the maf was reading a crazy value like !20.33 etc and not changign with revving, unlike the other sensors

I have the same engine as you and my maf reading in inpa is 32.36 at idle,but my car is going grand.What is that dde3.0 compatibility thing you mentioned?There is a change to the inpa cfg file that will allow

dde3.0 to show in inpa but the menus will be in german.

Edited 30 Oct 2012 by edber

[cf_corp]

yes for the most part the menus will be in german, i havent found the english m47 dde 3.0 thing although as you can see from the screenshots above they are kind of in english. i have some german anyway so it wasnt too bad for me. i thought id stick in the funny reading from the maf, however, it consistintly sees an issue with the MAF and it looks like it may be dead, anyone have thoughts or that? thanks

[CliffThomson]

Dead MAF, for sure. Not a cheap part either!

Get it done. You'll see a world of difference.

[cf_corp]

yeah, i mean the code is there, clear the error code, its back again, so there is a problem. i dont know if its better when its disconnected, unless it was already reverted to factory setting as the maf may have been completly dead,

[edber]

And you dont need to buy the full maf housing,you can buy the sensor only and put it in the existing housing which will be cheaper.

When i need a new maf i will be going for the pierburg maf sensor.Apparently it gives good results in the m47 engine.

Edited 31 Oct 2012 by edber

[cf_corp]

yes hopefully, with the new maf that should be it. I understand there is like a learning period for a new sensor as in the adaption vaules, can INPA be used for this as i dont want to fight with vmware/slow laptop and the have DIS gimme some issues when it finally loads, or would i know pretty much right away in terms of power even though it is still adapting to the new sensor, obviously i will clear the code after the install and monitor it to see if it comes back,

a local bmw specialist quoted me €120 for a bosch Maf and i thought that wasnt bad but then he said actually that for a used one, a used one on ebay is like €40, i didnt buy OEM or peirburg, i bought o generic one with a 2yr warranty as i dont think ill have the car for longer after xmas anyway.

[cf_corp]

UPDATE: so i got my replacement MAF sensor today and i fitted it in about 5 mins. The difference is noght and day, the low down power is back and has good torque through all the gears like it should have.

[edber]

UPDATE: so i got my replacement MAF sensor today and i fitted it in about 5 mins. The difference is noght and day, the low down power is back and has good torque through all the gears like it should have.

Can i ask where you got the maf from and how much?