Thanks for all of the input. I actually changed the air filter before I put the car on the road. I purchased two fuel filters and will install them tomorrow. The car has an inline and a canister filter. I will also try some diesel purge. I was at NAPA the other day, and one of the counter guys suggested Lucas injector cleaner.

No, I don't have to rev the engine to get it to go into gear. However, when the car bogs down, if I switch to neutral, the engine revs without a problem.

Come to think of it, when I had a problem last Friday, I filled the tank, and the car started running like a top, so perhaps it is a fuel issue.

Yes, I floor the vehicle, and I don't get much above 3000 rpms unless I switch to neutral.

I pulled the left front wheel the other day, and the brakes looked fine. Haven't checked all of them though.

Okay, tomorrow is another day. I'll keep you posted!