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Have you verified temp sensor voltage/resistance when cold? If it was reading warm all the time it would cause shit idle, stalling, and hesitation on startup because it would think the engine was already at operating temp, and obviously once there thinks everything is great.
Conversely if it was reading cold all the time, it would run super rich because it's stuck in "choke" mode and reverting to cold fueling tables. GM stuff usually reverts to cold when it fails, not sure where the Ford ones tend to go but it's an easy check.
Also verify TPS voltage and adjust as necessary. Not all are created equal and can need a little tweaking.
Conversely if it was reading cold all the time, it would run super rich because it's stuck in "choke" mode and reverting to cold fueling tables. GM stuff usually reverts to cold when it fails, not sure where the Ford ones tend to go but it's an easy check.
Also verify TPS voltage and adjust as necessary. Not all are created equal and can need a little tweaking.