Quote:
Originally Posted by hunter4ever12
I have a 92 K1500 5.0 L with 210k miles on it so its not a brand new engine by any means, but it is gutless! It has no power at all. Its so severe that when driving highway speeds(80 mph) it frequently downshifts like when going up a big hill, but its on flat ground. Now every now and then it runs like a champ and has plenty of power and get up and go and then the next time i drive it its back to the same old powerless pickup that it has been. So with that being said im thinking due to those circumstances its probably a sensor problem, the sensor every once in a while starts working and causes something to happen that is giving me more power but i dont know what sensor would cause this. I am thinking the O2 sensors but im not sure. It might not even be a sensor problem for all i know but there is definitely something wrong. HELP PLEASE!!!!
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92 5.0 L V8 is not no speed demon.
But
First step would be a first class AC-delco parts tune up.
With base timing check and fuel pressure test and cat back pressure test.
Any codes or check engine lights?