New user here.
I work on my own stuff and am learning a lot about the PSDs.
I have used up all I know, so here I am...
Working on a 95 PSD van.
196k miles, always ran great.
Routine oil change. Used 20-50 as always.
Added a quart of fuel system cleaner (Diesel Kleen). Never used this before.
The van only had 1/4 tank of fuel. Told the driver to fill up immediately so the stuff would not be overconcentrated. He forgot and drove about 40 miles before refueling. Still running great at the time.
Still running great.
Downpour of heavy rain.
Driver picked up a trailer, ~4000# tandem.
The van soon lost 90% of it's power.
Chugging, no smoke, rough idle, slow to rpm, etc...
I was called.
Checked air filters first. If they are dirty and get wet, you get no air.
They were dusty but okay. Replaced anyway. No help.
Drained fuel filter. (changed 3k ago) No help.
Drained most of the fuel. In case bad diesel picked up or Diesel Kleen causing problem. Added new fuel. No help.
Checked all fuses. (one of our trailers blew 3 fuses on another van the other day causing drivability issues) Okay.
No way to read any codes. No CE light anytime during operation.
Temps normal/oil pressure normal.
Read extensively on this board. Found it by Google.
Picked some ideas up. Played around with a few simple things.
The van is not condusive to major tinkering without good cause. It is very cramped to get to even the fuel filter.
Anyway... Nothing has improved, but I found one thing:
When I take the passenger rear connector off the valve cover gasket, there is no change in running rough.
Remove any other connector and idle roughness gets much worse.
Where do I go from here?
I intend to order a reader or reader/tuner... but that won't lead me right today.
On that subject:
Is there a tuner with code reader that folks recommend?
I know tuners don't allow multiple vehicle tuning, but does the code reading portion of the tuner read codes off other vehicles? Or do I have to buy a separate tuner/reader for every PSD vehicle I have?