RE: Engine trouble [from JPOR: ]

[Chris Waterman <Chris_Waterman@xxxxxxxxxxxxxx>]

Thanks for your help on this, people.  The cat and ALL the
components of the fuel delivery system are less than a year
old.  What's a ballast resistor, Mike B?

Did some more testing last night (well, okay, I sat in the
supermarket parking lot for half an hour in the pissing rain
waiting for the Jeep to get cold enough that it would start).

When it did start (still a bit warm), it was doing the bogging
thing again.  It would run fine as long as I didn't load it
down at all.  So I was able to drive home in 2wd low range
(low torque, high rpms).  Very slowly - thankfully it wasn't far!

So then I'm thinking that it's acting like it's running real
lean for some reason.  Couldn't find (or hear) any vacuum leaks,
so I unplugged the EGR this morning, and things seem to be a
lot better!  Have to take a real close look at the EGR vacuum
solenoid this afternoon, maybe it's been leaking and turning
the valve full on, injecting tons of exhaust into the cylinders
at idle.  Could get worse at higher temps, for some reason???

Chris (glad to have a working theory, at least)