I have a 1984 Volkswagen van. It has at least 200,000 miles on it. The problems first started when I let it run out of gas one time. It didn't start for about two weeks then I replaced the temperature sensor. Now it starts but it idles high then slows down and sounds like its about to die then idles high again and it keeps fluctuating like that. I changed the oxygen sensor yesterday and it seems like it idles a little bit better, but not much. After I start it and give it some gas the engine accelerates like it should but sounds like it is misfiring. When I take my foot off of the gas pedal the engine dies when it should return back to idling. I've cleaned the carburetor too, but that wasn't the problem. Also, there is a little orange wire on the left side of the engine compartment that came disconnected somewhere and there is some tubing on the end of the wire; I guess to hold it on to where it's supposed to go. One end goes around under the engine and the other side that came disconnected is supposed to go somewhere around the temperature sensor.
Sunday, October 14th, 2012 AT 4:35 PM