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My 1996 f250 5.8 is stalling in the cold. After it warms up it is usually fine and runs good. When it stalls if I try to restart it it will flood. If I put the pedal to the floor which is suppose to shut off the fuel system it starts right up and idles weird for a minute then recovers and idles fine.
I take it to mean your truck stalls while it's cold.
I would look past the flooded restart attempt, and concentrate on the initial reason for the stall.
The truck computer is in "open loop" below 140 deg.
The ECT, (temp sensor for engine control) is used however for a "rich" fuel start cold, intake air should also be "choked down".
Check for any codes stored, check fuel pressure, and it will probably blossom into much more if your truck has had little recent service of an in-depth nature.
The codes that come up are for the vehicle speed sensor, O2 sensor,fuel pump relay, and cts. I have so far replaced cts and it still has the same problems. I am going to replace vss and relay tomorrow.
Your O2 sensor is the control that I personally would be replacing, in that they have a life (60k miles), and can have a shorter life under harsh conditions.
O2 sensor feedback has millisecond status control over the fuel system.
Also, the correct way to test fuel pressure is three stages, key on prior to start, key on run pressure, after run/shut down static pressure, with bleed down times according to a spec.
Don't overlook these steps, and you should try to follow factory guidelines as much as possible when interpreting the codes.
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