ok i own a 2002 chevy s-10 4 door pickup.. 109112 miles. auto 4wheel drive 4.3l 6cyl.. so today the check engine lite came on.. ok... well it it ooing power and almost impossible to go up hills.. just started doing this.. went to auto zone.. they said could be mass air flow sensor,, ,map sensor or a leak in vacuum hoses... i put a good mass air flow sensor in and a map sensor.. it still does it... so i guess cracked or broken vacuum lines???? also it almost sounds like i have bad gas cause it really pings when i step on gas harder... its not the gas though... but if i step on gas hard it really bogs down and makes this noise... can anyone help?"
please

also auto zone came up with code p0101

 

I had an older s10 blazer bog and lose power unless i drove slower than my grandfather. Was a leak in the jumper hose between the fuel pump and the metal tube coming out of the tank. 3" of hose fixed it. Check for fuel pressure and work your way from there. Have you changed the fuel filter lately?

 

yes..check engine lite went out.. but still no power goin up hill

 

if a vacuum hose is broken ,cracked ,,shouldnt my engine idle rough and tach move around when its at idle ?????????

 

I just had a similar problem with my 96 with the 2.2, turned out to be a burn out on cylinders 1 and 4 on the coil. This was all after I put new plugs and wires and checked the IAT sensor.

 

updated.... auto zones code was p0101,, maf,map, broken or cracked lines.. etc.. i put aa map,maf and checked lines... still no power,,put new fuel filter on also..., got a new cat put on..bingo..!!! light went out,,power and all seems good,,, still hear a slight pingin noise when peddle is pressed more than halfway goin up hills.. never did this before.i always change my oil around 3500 and have so since it was a new truck.. i got lucas cleaner.. still no help.. the engine light came on again.. last week.. after 2 days it went off... i still hear that slight pingin noise though..sometimes i hear that slight pingin noise right when it kicks into a lower gear.?????? why would it do this???? thanks again for everyones help on this