DPF Screen
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Joined: Feb 2018
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From: Hutto
DPF Screen
I turned on my DPF screen with FORScan the day I got my truck. All has been normal until last week when I got my truck back from having the tank and fuel sender replaced. I seem to recall it going in with 35% on the DPF and after getting it back last Thursday, it has been at 0%. I've put at least 150 miles on it since getting it back. It seems a bit strange that it wouldn't show anything in the filter. Any thoughts on this? There are no codes being thrown.
Postmaster
Joined: Jan 2005
Posts: 4,424
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From: BC Canada
They probably had the batteries disconnected doing the other service work. They also could have run a manual regen for all we know, I would check in with them and ask for an explanation, but I would think if anything was wrong you would get codes or warnings of some kind.
Fleet Mechanic
Joined: Dec 2012
Posts: 1,563
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From: DFW
I wouldn’t only rely on codes. I’m having hard jarring issues during regen startup and my truck has not thrown a single code. Dealer has it now and is ruling out a faulty DPF and a TSB for incomplete cycles...no conclusive diagnosis yet.
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Joined: Feb 2018
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From: Hutto
That has been my worry. It wasn't mentioned in the notes on what they did and I've never had it stay at 0 that long. Some short 10 mile trips and a couple longer 25 to 30 mile trips.
Laughing Gas
Joined: Dec 2005
Posts: 906
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From: Seattle area
Similar experience with the dealer on my one trip there. I was at 80% when I went in and 0% when I picked up.
Turns out it is a convenient (lazy?) way to give the engine a load cycle and heat it up to higher than normal operating temps without actually test driving it. I'm not saying it's right, but if the repair manual says "bring to normal operating temperature for 20 mins, then inspect..", well, a stationary regen sure brings it to temp for (over) 20 mins. And the tech can drink coffee or work on another vehicle while your rig is "test driving" itself in the parking lot.
Again, not necessarily a bad thing. Just unanticipated indication change.
Turns out it is a convenient (lazy?) way to give the engine a load cycle and heat it up to higher than normal operating temps without actually test driving it. I'm not saying it's right, but if the repair manual says "bring to normal operating temperature for 20 mins, then inspect..", well, a stationary regen sure brings it to temp for (over) 20 mins. And the tech can drink coffee or work on another vehicle while your rig is "test driving" itself in the parking lot.
Again, not necessarily a bad thing. Just unanticipated indication change.
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