Originally Posted by mike_1212

Test across that wire while wigling it. See if you loose connectiin at all... if not put shrink tubing on it...

Originally Posted by TomCat39

LoL, no... Keep the car off. You are testing for continuity, a resistance test at each end of the wire while wiggling. If resistance stays near zero the whole time, the wire is fine just needs to be sealed up. If the resistance bounces all over the wire has a break in it and needs to be replaced/repaired.

Originally Posted by TomCat39

At the top of this forum is a sticky for free tools from Harbor Freight, one of them being a free digital multimeter. Nothing fancy but will work to read volts, and do simple resistance (continuity) checks of wires. Just grab the coupon and you should be good to go.

Originally Posted by TomCat39

They are by definition. You can use a resistance test to test for continuity. Continuity means connected. So low or next to no resistance means it's connected. A continuity checker sends a voltage through the wire to light a light. With a digital multimeter, the resistance meter will send a voltage through the wire and display the resistance. Doing the same thing, just using two different tools. The multimeter is much more informative though. Simply, if you don't have continuity, you will have infinite or near infinite resistance (break in the wire). If you have continuity, you will have very little or next to no resistance. I think the resistance in copper wire is like 0.2 ohms per foot or two or something of the like. Might even be less. Hopefully this all makes sense to you.

Originally Posted by TomCat39

Not volts, ohms or resistance setting. the ohm meter setting is what sends a small voltage through the wire. The ohm symbol is the omega symbol. This is ohm symbol Ω

Originally Posted by TomCat39

If you are putting the leads side by side, that will be the expected results. Try one lead on the plug terminal for that wire, and the other lead at the other end of the wire, and wiggle the wire to see if you maintain that really low resistance reading. That way you are reading the full length of the wire you are testing. I use alligator clips to aid holding while wiggling.

Originally Posted by mike_1212

Grab an oil pressure sensor while your at the yard....

Originally Posted by TomCat39

Actually that's a solid method. The way you described it I thought you were putting the ohm meter leads side by side and only checking 4 millimeters of wire or something. You checked it thoroughly and have continuity and now you have the exposed wire sealed up. I figure once you get that sock in place, your half tank or better to run problem should go away.