power loss

[bobcatgt]

so im driving down the interstate and all of a sudden my yukon looses about 80% power.... i went ahead and swapped my distributor cap, roter botton, spark plug wires, and plugs...cause it was time for it...... this did not help at all ! changed my fuel filter and checked pressure of the pump.... it read about 10-12 psi.....my truck being a 95 and not a vortec i believe this to be acurate. still hardly any power at all... its really quite pitifull.... it runs pretty good at an idle . but when you put it under a load such as "in drive" then it is quite the sob story.... ANY help would ne greatfull

 

[KJLegend]

Fuel pump..

 

[aquaholic]

if your fuel pressure is good, i'de be looking at the ignition coil. plugged up cat will also let it idle ok and puke under load.

 

[KJLegend]

It says he's at 10-12 psi ...= wayyy too low. I was getting ~40psi and it was my pump.