My 1991 honda accord gets to 3500 rpm then starts missing runs fine under 3500

SOURCE: Reduced power below 4000 RPM

The main relay also controls the transmission and will cause an intermittent interruption of power and indicates its going bad. about a $60.00 replacement cost. the relay is located under left side of dash.

SOURCE: My 1993 honda accord misses at 3500 rpm and would not work smooth.

YOU CAN TRY TO GIVE A TUNE UP TO YOUR CAR MAYBE THAT HELPS YOUR PROBLEM.

SOURCE: 1986 HONDA ACCORD IDLES TOO HIGH 3000-3500 RPM

It may be caused by a vacuum leak, make sure to check all your hose for cracks and/or hoses that may have popped off

SOURCE: 1991 honda ACCORD

the ignition control module may be going bad. call your local honda dealer with your vin # they had a recall on the control module for 91-93. they will tell you if yours was replaced already if not you can pick one up for $60 at autoparts store and it is located inside distributor

SOURCE: 1991 Accord: I have a 1991 honda accord ex and after the hoses ...

You may have a cracked head, block or blown head gasket that is leaking combustion gas into the cooling system. If you dont have a combution leak detector kit you can take it to a trusted mechanic tell them the problems you've had and the parts you've replaced. Ask them to check for a combustion leak in the cooling system. A minor combustion leak in the cooling system can sometimes mimic the symptoms of overheating.