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I suddenly lost power driving. Engine will crank but not start. Cannot hear fuel pump run when key is turned on. Relay checks out OK. At the electrical pump plug, I get 6 volts on one leg, 8.5 on the other. Testing on the pump side, both outside leads (one yellow, one gray) go to ground. I'm confused.
 

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Find a post by Gat, Got it at last or IRQ. Each one has a link to Factory Service Manuals in their signature. Check the index in the FSM that fits your Jeep. Look for "Fuel System" or "Electrical Troubleshooting".

Good Luck, L.M.
 
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