dpf problem

Author
Discussion

stumpyalan

Original Poster:

620 posts

209 months

Wednesday 22nd October 2014
quotequote all
hi all i've got a e92 335d 07 plate with 58000 on the clock i've had the car 10 month now the other day the dpf light came on so i got it checked out its fine when cold but when the car warms up the dpf light comes on i've had the dpf cleaned out and plug it on the computer and its 60% blocked i do not know if the last owner did alot off town or short driving what the best way now spend money on a new dpf or it maybe something else? please help. alan

philmots

4,630 posts

259 months

Wednesday 22nd October 2014
quotequote all
Is the car reaching temp? Check on the onboard computer, if it's not hitting 70degs it won't regen.. 2 new stats required, fairly cheap job.

TheHound

1,759 posts

121 months

Wednesday 22nd October 2014
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Sounds like you need a new EGR valve.

As advised above check running temps on hidden menus, you need to be hitting about 90 degrees after 10 miles or so, if not the DPF won't regenerate.

I found this out the hard way on my old 330D

stumpyalan

Original Poster:

620 posts

209 months

Wednesday 22nd October 2014
quotequote all
philmots said:
Is the car reaching temp? Check on the onboard computer, if it's not hitting 70degs it won't regen.. 2 new stats required, fairly cheap job.
where do i find the temp gauge on the onboard computer i've asked people about this they say their is not one?.

TheHound

1,759 posts

121 months

lewis328

496 posts

197 months

Wednesday 22nd October 2014
quotequote all
That link is good, but I cannot make sense of it. What reading is for the temp gauge?

Smiley198700

158 posts

115 months

Wednesday 22nd October 2014
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Coolant temp is 07.00

You have to go to menu 19 and scroll through the numbers until you get to the sum of the last 5 numbers of your VIN first to enable the other menus, it is fiddle but easy once you get the hang of it. Easier to sit in the car with YouTube video on the phone than to read instructions

stumpyalan

Original Poster:

620 posts

209 months

Thursday 23rd October 2014
quotequote all
thxs for the feedback guys i've seen on youtube what i have too do i hope this sorts out what the problem is. alan

Vee

3,094 posts

233 months

Thursday 23rd October 2014
quotequote all
Havge you actually had the fault codes read to get to the 60% figure.
If so they should have told you when the last regen was.

As for the regen process, I'm led to believe that a number of criteria need to be met before it can start.
A minimum level of fuel in the tank, coolant temperature > 70c, glow plugs working and EGR temperature.

If it hasn;t regened for a while then it is probable that something is stopping it happening.

Mine has just been cleaned for a second time after blocking up again within 4 months.
It turns out that everytime the regen started the pressure sensor was reading 2 bar and it shut down immediately on the basis that it thought the filter was too blocked. It also put the car into limp mode.
2 bar back pressure means that the car would barely have run so pointed to a faulty sensor.

It is important to get yourself a decent independent who will not only clean it but diagnose what caused it to block/throw the error in the first place.



helix402

7,832 posts

181 months

Thursday 23rd October 2014
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Also dpf will not regen when a fault is stored relating to the dpf. Even a forced one via ISTA D.

stumpyalan

Original Poster:

620 posts

209 months

Friday 24th October 2014
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Hi all just been out for a 20 mins drive and the car runs over 90% in temp and the dpf light never came on? what i need too do nexted time i go too work to see what temp the car is running. alan

lewis328

496 posts

197 months

Friday 24th October 2014
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stumpyalan said:
Hi all just been out for a 20 mins drive and the car runs over 90% in temp and the dpf light never came on? what i need too do nexted time i go too work to see what temp the car is running. alan
Did you use the hidden menus? I am curious to see how my car is running.

stumpyalan

Original Poster:

620 posts

209 months

Saturday 25th October 2014
quotequote all
lewis328 said:
Did you use the hidden menus? I am curious to see how my car is running.
yes i did.

lewis328

496 posts

197 months

Sunday 26th October 2014
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stumpyalan said:
lewis328 said:
Did you use the hidden menus? I am curious to see how my car is running.
yes i did.
I shOuld have asked I drive menus or dash ones? Was it easy enough to work out?