I have a 93 gmc c1500 4.3cy v6 with loss of power

4.0l Engine loss of power. Garage has no idea. - Ford Explorer and ...

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May 17, 2010 - 19 posts - ‎11 authors
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Be sure you are not using overdrive in this situation...Power loss can be caused by a clogged catalytic convertor...(Air Filter)

that car has a misfire check to see witch cylinder has the misfire by removing the spark plug wire while its running you should hear the change in the engine

when engine light blink it is only one thing.......misfire you could have P0300,P0301 and so on
P0300 is multiple misfire
P0301 is cylinder no 1 misfire,the last number tell you the no cylinder
hope it helps

you have to find out why it's overheat ,trans.pipe bent,cooler restrictions,
the pcm know trans.overheat and goes to default mode
have code retrieve

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

yes i could be slipping.try manually shifting down going up hill.

check the timing cuoldbe wrong

i know the camp verde hill of which you speak , last vehicle in the shop with that same scenario , after doing everything possible including a catalyst check , as we could not duplicate the problem , we replaced fuel pump at owners request and next trip he confirmed it was a fix .

Does temp gauge go up when this happens ? When was fuel filter changed last? If not recently, I'd start there.