The car stalls intermediately when driving 50 to 60 mph, also starts and dies intermediately .When trying to restart car it will keep cranking, if you turn ignition off and try again it will start and die. The only way it will stay runnnig is to pump the accelerator. I have changed fuel filter, checked fuel pressure,ok 60 psi. Also no codes show up. Any ideas.
Check to see if you emission system sensors are plugged in, such as the air intake sensor which is plugged into the air hose at the front of the engine. Another possibility is your gas cap. Replace it, its very cheap. If it only occurs at higher speeds it may be clogged injectors. Dump a bottle or two of injector cleaner into the gasoline tank after a fill-up. You might also try some octane booster which is methanol and will mix with and help remove any water in your fuel tank.
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