I have 92 2.3 liter Ford Ranger that has been running rough at idle ever since i bought it and i still cant figure out why? it also just recently started to almost die when i start moving which its never done before and i am doing the exact thing with the clutch and the gas. Also my rpm gauge has never worked right as well it will only go up to 2000rpms and that's close to redlining it any ideas on either problem?