I'm donating some time to someone who needs help getting several cars to
run, one is a '90 Celebrity.  Symptoms are that it starts and runs fine
until warm, then runs rough until it dies, and cannot be started again until
it gets cold.  Fuel pump has been replaced I'll have to guess the fuel
filter as well, but will check on that.

Does this make and year have any known problems that might cause this, TSBs,
recalls?  I will look at timing sensor, temp sensor, and knock sensor.  I
haven't had a chance yet to look at the vehicle, just asking for other
things to look at that would be the cause of this.  I have a hand-held unit
that will tell me the output of most of the sensors and some of the computer
output, plus any trouble codes.

Thanks