lack of power

[explorinitup]

ok heres my problem i got a 97 x with the 5.0 when its cold i got power it drives sweet but when it gets warn i got no power like a los of 50 to 75 hp got an ideas

 

[explorinitup]

does anyone have any ideas????? some place to start cuz iv tryed everything i can think of

 

[aldive]

Have you performed any diagnostic work?

 

[explorinitup]

yea no check enin light iv run koer and koeo test and every thing passes iv cleaned the mass tune up fuel service i felt a litter difference but its still there

 

[aldive]

Have you scanned the O2 sensor function?

 

[explorinitup]

i can what should i look for

 

[my98nnj]

Clogged cat.

 

[explorinitup]

nop i even cut the rear two out. iv tryed everything i can think of im out of ideas

 

[explorinitup]

im going to lookin to the o2s again and see if i missed someting any other ideas?????

 

[explorinitup]

nop still nothin????