1993 chevy s10 power loss

4wd , A/T box.
brake are bad,
and engine misfires.>
we SCAN the PCM for P3xx or P7xx codes misfire and A/T errors (never skip this !!!)
you do know any transmission brain (TCM will get confused if the engine is weak or misfires right, so engine is first to worry.
but you said engine REVS (rpm up high) and car is slow and or
transmission fails to up-shift, to 2nd in drive.??????
any tech in any shop sees the car, and scans it first.
and see OMG dead transmission speed sensors
or sees, gross misfire,
or must drive it first to see what is going on.
if up-shifts fail at the documented shift points the transmission is bad.
or just 1 sensor on it.
this is called DRIVE_ability issue that can only be solved by tech driving it and seeing it fail.
not the blind, not me,but the shift points are what matters.
and if the tech feels misfire or power loss even in 1st gear.
he knows the engine has a problem. (or even both)
2001 is old car, most cars this old have like 10 ignored problems in the wild.
classic that.
or bad spark plugs and bad speed sensor both, a wild guess and common for sure.
post VIN or the RPO code so we can decode drive-train there.

Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
chevy

Catalytic converter is plugged.

Chevrolet S-10 Questions - Fuel System Loses Pressure ...

www.cargurus.com > Questions > Chevrolet > S-10

CarGurusJul 28, 2012 - Fuel System Loses Pressure - I have a 2003 Chevy S-10 Pick Up with the 4 ... car a few times, what essentially you are doing is priming the fuel pressure. ... A dirty fuel filter will not cause the lines to lose pressure after the engine is shut off. ... I have a 98 s10 2.2 liter and it was driving fine all day then when ...

Chevrolet S-10 Questions - My 2001 S10 has a hard starting ...

www.cargurus.com > Questions > Chevrolet > S-10

CarGurusSep 16, 2012 - My 2001 S10 has a hard starting problem if the truck sits between 1 ... Vacuum leak, have you checked fuel pressure while it sits? ... Would the spider alsocause a misfire at low rpms? .... at an idle, or squeaking while driving and it gets faster as you go? ..... 1994 Chevrolet S-10 2 Dr STD Standard Cab LB.

Chevy S-10 Won't Start - Repalced Fuel Pump and Pressure ...

www.cartruckinfo.com/chevy-s10-wont-start.html

Chevrolet S-10 pickup won't run and has no fire unless I jumper the fuel pump relay. ... Once the truck starts and is running you can remove the jumper to the fuel pump ... Iwould get the fuel pressure checked to start with, because that's where the ... 93 gmc 4.3l FI runs but dies out loss of power after 5 mins of running then ...

Stalling S10: I Have a 1994 Chevy S10 2.2l It Stalls After 35 ...

Have you checked fuel pressure with a gauge ?
Is the check engine light on ?
Will it rev up in park or neutral ?
Normal exhaust flow ?

when your in park or neutral the throttle position sensor is moved to a different position it could be this because its worn in that spot really bad it could be a idle air control valve / or really dirty fuel filter but only you know when you changed it the other statements about dpfe and egr are also correct so if no code check engine light works /blown bulb ?do you see it when you first turn the key and the engine starts then goes out

Because an engine revs up freely with no load on it in park and neutral is not a test for loss of power.

First thing you need to get the trouble code out of the computer.

It sounds very much like your clutch is slipping. If the engine revs continue to rise when in gear and the car does not increase it's speed accordingly then if it is a manual car then you need a new clutch.

Had a similar probelm, cleaned the EGR valve and problem went away.