Hi guys. Ill try to be as brief as possible. I need guidance. 1995 F150, 302, auto, 4WD. About 160k miles. Been having issues and today it got worse. Truck has been not wanting to start when warmed up to operating temp. Starts great when cold. Hesitates and stumbles (like it's running on 2 cylinders) when it's warm. Check engine light goes on and off intermittently. I took it to O'Reilly a few weeks back. Codes were 181, 172, and 565. Recently got a new job and haven't had 2 min to spend on it. Just drive to work in the morning and back at night. No running errands in town where I know ill need to shut it off. Last week a couple times parking when I'd shift into reverse from drive it would die. But start back up after a try or two. Today at a stop it was idling fine then died. Started right back up and idle normal but when I'd go to accelerate it would stumble bad and I'd put pedal to the floor and barely get any power. Tonight I tried to start it. It starts great, runs for 5 to 15 seconds then dies. But starts right back up, runs and dies. Several times. First time it's ever done this. Any advice on where to start would be awesome. No idea if I have any new codes. Ill try to get them read tomorrow. Thank you!!!!

Side note: when I first start the truck I can smell fuel. No leaks but seems to run really rich.

 

Last tune-up ??

 

Plugs, wires, cap, and rotor last year.

 

did you ever get codes read ??

 

Well problem solved. Ended up being the fuel pump. Down to 11 psi. Runs good now. Thanks to you all.

 

I’ve never seen a setup like it either. I was also wondering if you guys know why the reading for the o2 sensor 2 bank 1 shows a n/a reading for the short term fuel trim?

 

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