Fuel guage/engine performance

I don't know about you but I'm having the same problem, you can read more on it by searching the posts within the last month about the advice I recieved. Pretty good stuff. The only difference is that my fuel tank will read erratically set the engine light on and start working really bad. I put the fuel cleaner to it to help clean possible bad connections in the sending unit, helped a bit. This weekend the tank is comming off to clean manually the connections and hopefully find an obvious problem somewhere. I'm puzzelled why the fuel guage seems DIRECTLY related to engine light/engine/trans problems. And everybody I spoke with sofar will say their not related at all...weird..All I know is that when I'm dirving and fuel guage is below half.. the guage will usually start to climb to full, the engine light will illuminate and the van will start working like a bag of dog %%&*$#. Fill it with gas the problem goes away engine light out van works great Spoke to another friend and he said its probably bad connection in sending unit and computer getting false readback or signal we'll see this weekend.

Pretty much anything that you do to "clean" the contacts will either not have a lasting effect or do more harm then good. The potentiometer is exposed and if has corroded, scratched, or otherwise physically been changed, it will never read the same value.

What I'd do is pull it out and read the values across the terminal as you slowly move the float. It should smoothly change from 40 to 250 ohms. If there are any jerks or quick changes, then the sensor will have to be replaced. You can get a new sensor for around $160 at the dealership IIRC or a new pump for about 280 aftermarket that will include the sensor with it.