carlosrg

So on my 2011 GL350, I have a lot of little issues that I am trying to deal with.
1. Check Engine light caused my 13AF00 confirmed with iCarSoft MBII .. OBD error code P2463.
2. Steering rack bushings are shot and steering rack may be leaking.
3. I got an oil leak somewhere.. I replaced the oil cooler seals before. But that was like 70K miles ago.
4. Had the transmission oil changed .. got a code 2783. I am concerned that they didn't put enuff fluid in it.

So starting off with my first major issue. The check engine light is on I replaced the sensor a while ago.. using OBD fusion I was able to check that I am getting 10-30kPA reading for DPF differential pressure... http://www.enginesens.com/Delta-P_60...nstruction.pdf that does seem like a lot. But it seems that if I clear the code. The code is pending immediately. It makes me think maybe another sensor is also bad? Or are those values bad? Is the sensor bad? The one I took out was A007-153-61-28 and replaced with a A642-905-01-00 which I believe is ok.. I am kind of wondering one of the other sensors is bad? The exhaust temp sensors seem to be working I get values for both.

I had the DPF baked for 12 hours .. But I didn't chemical cleaned.. I wonder if it is really still clogged? I am thinking of getting the Liqui Moly cleaner and flush. I really like to get the check engine light off so I can see if the system with start doing its own regen cycle or altow me to do one at the moment I Can't even force one with the MB2 Carsoft..
Here are things I done so far with truck
1. Replaced air filters
2. Replaced Cabin filter
3. Replaced broken air intake tube (that piece was expensive) that feeds both air filter boxes it was cracked..
4. Had transmission oil changed
5. Replaced Diesel Fuel Tiler
6. Had DPF baked and blown out.
7. Blew out DPF sensor lines to make sure they were clear of obstruction. (they were fine)

Any recommendations ?

Plutoe

Sell the car!!

carlosrg

thought about it.. But in some ways it is a not a bad car at all..

S-Vibes

First off thanks for the link to the article on differential pressure for the DPF pressure sensor. It was a question I also had, so appreciate the share.

Did you do the baking yourself? If not, who did it for you and at what cost? Funny think is I went the elemental 180 degree direction with solving my DPF cleaning issue. Pulled it out and went medieval on it with my power washer. This I think is the cheapest option for cleaning it out. YMMV, but I've done it twice without issue. I was hoping to trigger a manual regen after this clean out, but as you said the icarsoft MB II is a dud in that regard. I did later get the Autel Maxidaig (sp) to trigger regen, and it also doesn't do what it promises in terms of actually triggering regen. What it does actually seem to do is allow you to set as new (supposed "teach in"). When I got the Autel I took the DPF out again (6 mons later from the first PW) and gave it another power wash and set as new.

So the other thing that I recommend before getting to deep in your wallet is to swap the DPF sensor first. Seems very often the issue lies with the sensor. I know I'm not using an original, since I source them from ebay for less than $15, so I always have 2 replacements ready to swap in if I get:
11DA00 The lower limit value of component B28/8 (Differential pressure sensor (DPF)) was dropped below/not reached,
P2453 DPF differential pressure sensor circuit range/performance, or
P2454 DPF differential pressure sensor circuit low
I guess the rising heat in that location has a habit of cooking the sensors? Don't know for sure, but they can be changed in 15 mins.

Anyways good luck with the rest of it.

carlosrg

s-vibes do you have perchance an obd2 wireless adapter? And have the OBD Fusion app? https://play.google.com/store/apps/d...hScan&hl=en_US It has the ability to check kPa values. I checked mine and it shows the sensor is working properly and the max I got it at full load 23PSI was 38kPA, That is around 6psi. It doesn't seem like a lot but maybe that is enough? Can you check to see what your sensor values are perchance?

Also, I am thinking of following this procedure to clean the DPF. I took my DPF to a semi-truck place called "Rush Trucks" and they baked it for 12 hours and blew it out. Normally they use a machine to blow it out but they said they didn't have the adapters for my truck. And after that the truck seems to run better.. I did also replace all the other things at the same time.

http://www.peachparts.com/shopforum/...***-om642.html

Did you use the same products to clean your DPF?

S-Vibes

I don't have that scanner, but I can just run a live data stream on my MBII and let you know what I get.

I did not bother with any products. Seems redundant and a waste of money to spend for a product since you have the DPF out, the cleaning agent is high pressure water forcing out the soot.

carlosrg

Maybe I am missing something with my MB2 iCarSoft I can't see the DPF differential pressure value.. Are you able too? I had to use another tool

S-Vibes

sorry I misspoke. The MBII doesn’t do that, it was my MaxiDaig

S-Vibes

So I get 14 to 16 kPa when cruising around 60 mph. Curious to see where it would max out, I floored it to about 90 mph and got 46.9 kPa at the peak on the gauge.

carlosrg

I went ahead and ordered a VCV and a new sensor, and going to flush the DPF and give it a try again.

S-Vibes

what is a VCV?

carlosrg

CVV is the Crankcase Vent Valve.. This getting stuck open sucks in oil into the turbo and pushes it to throw the intake system coating everything with oil and right out the exhaust. Getting everything oily usually the reason for the large consumption of oil. At least that is what I have been reading so I figure I replace it while doing a new Sensor.


So new sensor in and 13AF00 is still on after ECM reset, I am going to try and use Liquid Moly DPF cleaner and Purge and a pressure washer. The fact that it's a hard code makes me wonder if something else is on that circuit and the actual problem. I am going to see if I can find something. I wondering if one of the exhaust pressure sensors is faulty and this the code that's coming out instead.

carlosrg

I wanted to let you know I posted an update in the diesel forums.. My DPF problem seems to be resolved without replace the DPF unit.

Review this post for more info.
https://mbworld.org/forums/diesel-fo...ml#post8170102

hyibin

I follow this method, use hydrochloric acid to clean ash. Ash won't be burned during regeneration.

You Tube

bcubed

Hi have you checked seal turbo to y pipe oil pours out of there best to replace crank breather as well. oil leaks into swirlflap servo there is a hack. In tank Fuel pump and rear fuel lines are prone to fail as well.