[cm335d]

Hello All,

I recently used the Liqui-moly Diesel Intake cleaner, where you pull off the charge pipe and squirt this stuff in the egr (and further up because the straw applicator is very long). The car smoked and hiccupped like crazy while I was squirting the cleaner in. I did have a helper hold the idle up a bit (1800rpm) like the instructions mentioned. There was a whole mess of nasty black smoke coming out of the tailpipe when doing this. I can't tell if it cleaned my intake ports or not (I suspect not). The EGR looks slightly cleaner and I do mean slightly (I'll try to post pics soon). I don't recommend trying this cleaner due to the problems I have had using it and the cost ($27 at Napa). I do plan to remove the intake and walnut blast everything, but until I get my applicator tools together for the walnut blast, the car remains together.
Anyhow, after I finished the can of Intake cleaner (which takes some time BTW), I put that charge pipe back onto the EGR and cleared the codes. Shortly after driving, the dreaded SES came on and I am now showing code 242A (EGT bank 1 sensor 3?) and 242d (dpf ash accumulation or egt sensor or damaged dpf pressure sensor). Has anyone had the faults? If so, what did you do to resolve them? I have yet to pull out the EGT sensor to look at it, but I'm thinking it might be caked with soot. Liqui-moly customer service claims that their cleaner could not have caused the problem, but the codes were not there prior to my using their product. Hmmmm. Anyhow, thanks in advance for the help.

[Owen81]

All that black crud probably coated your sensor and is causing it to throw some bad readings. If that is the case you should be able to burn it off with some spirited driving or a forced DPF regen?

[cm335d]

Originally Posted by Owen81

All that black crud probably coated your sensor and is causing it to throw some bad readings. If that is the case you should be able to burn it off with some spirited driving or a forced DPF regen?

I’ve done several spirited drives and think the car did a regen once (but don’t know for sure). How do you do the forced regen without the Carly app?

[cm335d]

Originally Posted by cm335d

I’ve done several spirited drives and think the car did a regen once (but don’t know for sure). How do you do the forced regen without the Carly app?

Forgot to say that the codes were still on after that.

[Owen81]

Its possible the codes would latch and not clear unless reset?

[cm335d]

Originally Posted by Owen81

Its possible the codes would latch and not clear unless reset?

I cleared the codes several times with my cheapo Harbor Freight code read/clear tool, but they still came back. I think I need to pull out the sensors and see if they need to be cleaned.

[Persian Whisperjet]

I used that stuff and it grenaded my MAF sensor and my SCR crapped the bed within 1,000 miles, under warranty thankfully. For a few days after the treatment the car smelled like a sumo wrestler taking a dump on a burning tire.

[rbreding]

Imagine all that sludge running down your intakes and now in your cylinders. No telling if the valves now have so much sludge they can't close properly.