Regulator Filter

2001 jeep starting problems when hot or cold.?

Oh yeah. No codes either. Could it be the computer?
Once again this jeep has given me more problems. Especially in the morning. My jeep will crank over when start but sputters like it lacking fuel, I will then cut the car and off and then start it back up and it does fine. Now in the morning i turn the key to hear the fuel pump which sounds weak the 1st time. Then i turn the key again it will start up. Even making short trips when i restart my Jeep it will sputter like lacking fuel. Also while at stop sign my car idles rough, rpm is low like 400-500, i assume the fuel pressure drops.
I have replaced the fuel pump, but I think they gave me a cheap one.
Replace IAC
Tune Up (sparks plugs and coil).
I am real close to giving this car back.
Any Suggestions?

Did you replace the fuel pressure regulator/filter at the same time as the pump? Rather than guessing about the fuel pressure, you need to get a fuel pressure gauge to tell for sure, it should be around 39 psi.

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