93 Ranger loses power when warmed up.

[zake]

My truck was behaving the exact same way. after some thinking, I replaced the O2 sensor and BOOM, fixed. something to look into. Also, your odometer rolls over at 100k miles, at this age, it is impossible to know how many miles are on it. mine reads 56k, but I know the clutch was replaced in 1998 when it had 90K..

 

[Steve_bama]

My truck was behaving the exact same way. after some thinking, I replaced the O2 sensor and BOOM, fixed. something to look into. Also, your odometer rolls over at 100k miles, at this age, it is impossible to know how many miles are on it. mine reads 56k, but I know the clutch was replaced in 1998 when it had 90K..

Already replaced mine... And put capacitors in computer... It has to be something so simple it isn't obvious.