I just bought a 91 Isuzu Trooper and am absolutely in love with it. I'm going to have to be I guess because she is a little rough around the edges. I had a lot of trouble getting her through emissions, but after replacing the o2 sensor, an o ring on one of the injectors that was mysteriously missing, new cat, oil change, and a tune up she finally passed. I know i need to replace the speedo cable cause it doesn't work. My fuel gauge is also inoperative, and I dunno what to do about that. My oil pressure gauge seems to work fine but I'm unsure about the temp . . . any suggestions on how to fix these problems? Any other things I should keep an eye out for?