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DPF clean

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Bertie

New Member
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Car
Honda Accord Tourer
Hi all,
Thanks for all your advice on a previous post.
Cars recent issues...blowing exhaust smoke in to cabin, also produced engine management light. Split EGR pipe replaced and issue solved.
2 weeks later, bloody DPF light came on, and limp mode.
Took it back to Honda specialist and forced regen performed, but warning light cane on after a few days again.
Now booked in for DPF removal and clean.
My questions to you all are;
1. Has anyone had a successful DPF clean that's lasted more than a year or two?
2. I can't removed the DPf etc, so would either have to try and sell the car with a fault or replace the DPF. If I chose to replace the DPF, should the EGR valve be replaced at the same type, and/or other parts that are likely equally filled with sooty crap?
Thank
Chris
 
How many miles are you doing a week and are any of them long runs ?

What was the last MOT emission test result and is it much different from previous years ?
 
Channel Hopper said:
How many miles are you doing a week and are any of them long runs ?

What was the last MOT emission test result and is it much different from previous years ?
Click to expand...
Hi,
It gets a good run most days, about 40 mins each way, and most of that at 70 or 80mph, so about 3-4k revs.
Don't know the last MOT emissions, but there were no advisories.
 
If you want to keep the dpf present then you must replace with a brand new genuine Honda dealer item, new differential pressure sensor and vacuum pipes as a minimum. I would also recommend replacing the exhaust gas temp sensor at the same time, as both sensors are used to measure and activate the regeneration cycle.

It’s not necessary to replace the egr valve.
 
F6HAD said:
If you want to keep the dpf present then you must replace with a brand new genuine Honda dealer item, new differential pressure sensor and vacuum pipes as a minimum. I would also recommend replacing the exhaust gas temp sensor at the same time, as both sensors are used to measure and activate the regeneration cycle.

It’s not necessary to replace the egr valve.
Click to expand...
Thanks, that's a really helpful answer. I shall hold out for a lottery win tonight, as I guess it could be 2 or 3k all in!
 
Sell the car to someone who is willing to have the dpf removed and buy yourself a petrol or electric car.
 
Yep, it's certainly a sensible option, though I'd essentially have to give it away. Either way, I'm stuffed as I just spent £3k on buying it...only had it a couple of months
 
Not anti as such, but my employer would be if I was unlucky enough to get caught out at MOT!
 
Each to their own mate. I would agree, sounds like a petrol or pre dpf diesel car would be better for you.
 
I feel for you Bertie and you say the fellow that sold you the car was okay but I aint so sure.
Anyways if you are to recuperate your money the cheapest option would be to get the dpf removed and mapped out.
Then you can sell it on with a clear conscience knowing the car is problem free and the new owner might pay top price knowing that he won't have to sort that common problem.
I bought mine in 2018 and later found that the car had an exhaust leak from the egr pipe, a common problem apparently that I was not aware of and I was properly annoyed that I had missed
this when purchasing, the seller seemed so genuine. It also had a flat battery as it stalled on the way home and I had to jump start it off the wifes car.
 
Last edited:
stellamon said:
I feel for you Bertie and you say the fellow that sold you the car was okay but I aint so sure.
Anyways if you are to recuperate your money the cheapest option would be to get the dpf removed and mapped out.
Then you can sell it on with a clear conscience knowing the car is problem free and the new owner might pay top price knowing that he won't have to sort that common problem.
I bought mine in 2018 and later found that the car had an exhaust leak from the egr pipe, a common problem apparently that I was not aware of and I was properly annoyed that I had missed
this when purchasing, the seller seemed so genuine. It also had a flat battery as it stalled on the way home and I had to jump start it off the wifes car.
Click to expand...
Sounds like the same EGR pipe that I had!
I'm well chumped off, but at least I've got some options. Thanks ☺️
 
Drop me a line Bertie, let’s see what we can do to help.
 
When you said the warning light can't back on after the regen, was that the DPF light or the engine management light? I had an issue with mine going into limp mode with an engine management light on when at cruising speeds. Checked it with an OBDII reader and the code I got was P00AF, which indicated an issue with the turbo actuator, often caused by residue build-up on the turbo veins coming from a sooty DPF.

I performed a home DFP flush and got a can of Wynn Turbo cleaner Spray (not the fuel additive). This sprays directly into the turbo intake with the engine running (tutorials available on YouTube). Resolved the issue and it hasn't returned since.
 
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