Engine Performance problem
1995 Chevy S-10 4 cyl Two Wheel Drive Manual 190000 miles
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i own a 95 s10 and if i push on the gas slowly in neutral it will rev as high as i want but if i floor it it goes to about 3500 rpm and spits and sputters and sounds like its getting too much or not enough fuel. i have changed plugs, wires, oxygen sensor, air flow sensor, throttle positoning sensor, fuel filter, new air filter and now i am stuck with it doing the same thing. i had the engine checked but the little thing said nothing was wrong. im stuck please help

have you tried disconnecting the cat sounds like its plugged up another thing to do is a compression check and also put your hand over the exhaust while its running that will tell you if your cats plugged

ok i put my hand over the ehaust tip felt like not much exhaust comming out. whats that mean?

s10kid wrote:

ok i put my hand over the ehaust tip felt like not much exhaust comming out. whats that mean?

Were you able to hold it there or did it push your had away? Suggestion though if you have something like a block of wood or I put my foot with shoe on over exhaust as not to burn myself.

If didn't push away with some force or had pretty much no force the cat could be clogged. That is as long as you have done a compression test on the cylinders and all were within specs.

You can also disconnect the cat at the front and see how it does. However, will be very loud.