2009 386 Peterbilt problem (Need Help)

Regen is exhaust side. What in the world?

If you are draining a dry tank and or a wet tank (Especially) and get oil sludge then your air cleaner is not working and your entire braking system is at risk once that #### gets to eating away the diagphram that gets between your brake chamber and your brake emergency spring side. You will discover your primary air supply draining away as Moses parted the sea faster than you can finish the slow down for a highway ramp. It happened to me long ago.

I don't know enough without looking at your truck in specific to offer any other opinion.

Something is going on There is only one big tank in much older trucks or two tanks in a air brake system, again a wet tank and a dry tank beyond the air cleaner which sits under your cat walk usually left side on your tractor. OR most any.

 

It blows my mind how someone can own a truck and no so little about it. Dealerships must absolutely love people like that. The money thrown out her window is insane I'm certain.

But on a helpful note, this third air tank that your not sure is an air tank. Does air come out of it when draining? That would be a sure sign.

 

And if it is a air tank that would have nothing to do with a regeneration.

 

My guess would be if its that much oil then the compressor is letting oil into the air system. I think this needs to be address to see if that can cause regen problems.
I know some trucks require air pressure to aid with the regen.

 

If the air compressor is going bad...

Olymoly... that third tank come on. What is that tank. There is maybe a Mack that carries three tanks under the drivers door. But it's killing me here.

 

Harrass? Are you able to elaborate? Ive already had a discussion with another about that early today in these forums. I wonder if it is common.

My position stems from being able to eyeball, trace the various system lines of air, electrical, abs, fuel etc that keeps a truck going to the various tanks and whatever is attached to them. The Turbo for example has a charge air cooler line clamp that needs checking carefully daily to be sure it's tight. You will know it's not if the clamp broke killing your poor engine.

Sitting here after googling Peterbuilts, I feel like im going crazy over this diagram, that diagram etc. When whatever the issue is ultimately resolved I would be more than glad to learn exactly what is what there under that pete.

 

Okay, I had an 09 387, and can offer something, I think. There ARE 3 tanks...sort of. Under the passenger seat was one tank, under driver's side there were 2, stacked one on top of the other. This double tank is the "wet" tank. If oil is coming out of it, that is compressor failure. As for the regen troubles, is it a Cummins, perchance? If so, there are multiple sensors that need regular changing, and, at that age, her catalyst might just be shot. There's lots of info about maintaining this system to be found online. Tell her to look up Dpf system maintenance videos on YouTube to see the sensors and how to deal with them.