420A Need help car sputtering after engine swap

[codeshark]

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I have done a motor swap from a 1999 to a 1997 eclipse 2.0 and the heater hose messed up, started leaking antifreeze and over heated but not bad an not for long before I pulled off.

I got the hose fixed but the car is still sputtering and last time I took the car out it had like 2 or 3 loud pops under it then it started sputtering and died in the road. Got it started back but kept sputtering until I turned it off.

Note when I turn the A/C on after a little bit it also made the car turn off and the oil light come on.

 

[codeshark]

Like I said before, the front O2 sensor is important. Without a signal from that, it's just going to dump fuel at idle.

the o2 sensor fixed it now it runs great other then when you go to start it you have to keep cranking it for it to start which may be the fuel pump ive change my fuel filter already

 

[BLACK'98DSM]

If you don't have a fuel pressure gauge you can normally rent them from auto parts stores. There is a test fitting on the end of the fuel rail towards the passenger side of the vehicle. Let it sit for a day or however long you're able to and check the pressure, and also check it while cranking. You may need a friend or to set up a camera for that. If you don't have any leaks and the fuel pump is healthy, it should be able to hold pressure for a number of weeks or even months. Normally a failing fuel pump will back drain and lose pressure quickly. It's been a while since I dealt with a stock pump but you should be seeing at least 40psi. Anything lower may indicate a failing pump or leaky lines.

 

[BLACK'98DSM]

Also another easier check is to turn the switch from "OFF" to "ACC" a few times, leaving it at "ACC" for a second or so each time. That will prime the fuel pump and restore fuel pressure, allowing an easier start if the pressure were draining/leaking.