90Q Starting Problem

[Roger Firor <firor@lf.hp.com>]

I have a starting problem with my '88 90Q that literally developed overnight.
The car started and ran fine on Sunday, but today the car at first started
fine but by the time I had backed out of the garage the engine began to
stumble and the car stalled. It was difficult to start and never reached a
stable idle. It was difficult to get enough power to limb it back in the
garage.

I recently replaced the oxygen sensor (70K miles). Other than that I have
not fooled with electrical/fuel/emissions systems since I replaced the fuel
pump last March. Looking for advice on where to start searching for the problem
before getting out my Bentley manual. 

Roger Firor
firor@hpavla.lf.hp.com