No power going up hills

Check your owners manual for the correct shift pastern...It is a natural H pattern, with 5th gear upper right...reverse should be all the way to the right and lower right to engage...the knob does not always indicate the correct pattern...may have been changed...also be sure it is a 5 speed...most of these Cavaliers were 4 speeds...with reverse being upper right instead of 5th gear upper right...confirm in your owners manual if possible...will show illustration...Hope this helps.

Have it scanned for codes. On inclines it should drop out of overdrive. This could be an engine or transmission problem. Also check vacuum lines.

please explain the full story.
i have 5speed transmission option
and in 5th gear it does something odd.
what?
1: im going on flat ground, up hill , down hill?
2: im accelerating , deceleration or holding steady speed.?
and what does it do , go to neutral and RPM goes why high?

Define JUMP>

If the car heats up trying to generate revs , then it Seems like the clutch plate is slipped.

I am assuming you have the 2.3 liter 4cylinder engine.. This is common in all rangers straight out of the factory with that motor. Your asking alot out of a 4 cylinder truck that also get good gas mileage. they just do not have the capacity to gain speed up a hill. There are a few solutions for you that you could try. If it is a 5 speed manual transmission try to speed up before the hill and when you start losing speed go to 4th gear. this is also good for using as a passing gear as im sure you have noticed you lack power when trying to rapidly accelerate at highway speed to pass. an aftermarket cold air intake combined with a less restrictive exuast will give you anywhere from 5-20 hp gain AND give you more MPG's

Or you can buy a light truck with a v6 or v8 in it. rangers can be equipped with v6 as can chevy s10's. dodge dakotas have the availability of small block v8. this is of course will cost you alot in gas (based on experience) I am a 10 yr mechanic and have owned 2- 4 cylinder rangers a 93 and a 94 my dakota which i still own is a 01

The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM or ECM,ECU), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.

needs a new clutch thats at all not a difficult job for a skilled man but this job is not within the realms of a DIY job

I have the same truck and engine. The timing is off.

check the timing cuoldbe wrong