Originally Posted by tjwalker

The primary suspect is the crankshaft position sensor. When it fails in a certain way, you can lose the voltage gauge, the fuel gauge, or both. Sound familiar?

Here is a thread you should read:

http://www.jeepforum.com/forum/f11/c...ailing-639123/

Without the input signal from the cranks sensor to the computer, you will not have spark and you will not have fuel going to the fuel injectors (you may or may not have fuel pressure at the fuel rail)

You can test the crank sensor, but testing is not always conclusive. If you buy one, please do yourself a favor and buy it directly from Jeep! I cannot tell you all of the threads I have answered with people that have had trouble with some (not all) aftermarket crank sensors. It just is not worth the risk for the most critical engine management sensor on your Jeep. Buy an OEM sensor, it is money well spent for both reliability AND longevity!

I just ordered one from moparpartsonline and paid $60 for it. Cash and carry at a dealer and you may pay from $75 to $100.

Originally Posted by Dave Reeder

I have the same problem with a Chevy S10 not getting any power to the sending unit or the ignition module or coil and gas gauge is on empty