Runs rough starting hot

Tiny
96F150
  • MEMBER
  • FORD F-150
HI, I have a 96 Ford F150, 4X4, Auto, 5.0L with dual tanks and 178000 miles. It has 2 main problems.

1. It starts and runs great when cold but when I try to start it hot it will chug ( almost like it's flooded? ) Then suddenly smooth out and run fine after a few seconds. Can the fuel pumps cause this( just a guess)?

2. Once warmed up it shifts very hard from 1st to 2nd and then shifts fine into 3rd and OD. I replaced the Throttle Position Sensor and the transmission gear sensor ( or whatever it was called ). It mainly happens when I accelerate slowly and never if I accelerate quickly ( why I thought it might be the TPS ).

Any help on either of these would be greatly appreciated.

Ernie
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Tuesday, June 26th, 2007 AT 11:36 AM

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Tiny
96F150
  • MEMBER
And it does it only on one of the 2 tanks.
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Thursday, July 5th, 2007 AT 9:22 AM

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