I have a 93 Accord EX with 158K miles, 5 speed manual, with an
intermittent problem. It sometimes hesitates while accelerating at
low rpm. It happens when I shift to 2nd or from 2nd to 3rd or when
going around a corner in 3rd and then trying to accelerate. It seems
to go away when the rpms get higher.

The main relay was replaced in June 06 when the car would not start
(crank but not start). This hesitation/jerking/stumbling problem is
recent. Last week I had a tune-up at Honda dealer - spark plugs were
replaced and timing, belts, hoses & filters were checked. The fuel
relay (Relay RZ 39400-SM4) was replaced. It did not fix the problem.

Also, sometimes when I start the car it sounds like it isn't going to
catch but then does. Again, it doesn't do this all the time.

Any ideas on how to fix this problem without replacing everything in
the car?

Thank you for any advice.