Ran out of gas. After fueling, engine check light is on and car runs rough.

Possible. Need to clean out the whole line, gas filter, etc. Check your manual.

You have to find the reason the check engine light is on. This will aid in diagnostics. Also, are you buying fuel at the same place both times?

Change coils,fuel filter and check the code.

have the fuel filter changed and have the computer checked for codes incase something else is going on and they can be cleared to turn off the light.any dirt in the lines should be out of them by now.its possible that there is dirt in the injectors and a fuel system service should be done to clean them which is a recomended service on all cars anyways.you can have the fuel pressure checked while its in the shop to make sure the pressure is within specs.

I had a something similar to this happen to a girlfriend of mine. She has a 98 escort and it ran out of gas and the service engine soon light came on after she filled it up. If this is what your talking about check your owners manual. Most of the time if there is really nothing wrong with car you can drive it around ( Generally 20 min in town and 10 on the hwy with 4 idle periods (4 times of the engine being at idle) - do not cut engine off) and the light will go off. The rough idle code most likely happened when the engine ran roughly because. it was running out of gas.

remove dog house locate test port and install guage should be 45-60 psi

check the fuel pressure regulator, mine broke the diaphram and was dumping fuel in it

Check the most common simple and cheap thing first, change the fuel filter.

if you have high milieage you may have sucked in the gunk on the botton of your tank when you ran out of fuel check if you can hear the fuel pump running for about 2 sec with key on engine off if you hear nothing the problem is with your pump as they will burn out if they run dry for too long,if you hear the pump check for fuel pressure if pressure low check fuel filter to see if clogged by gunk from bottom of tank.

he plugged up the fuel filter try changing that first and if that helps then he won't need to replace the whole pump