7.3 wont crank! - Ford Powerstroke Diesel Forum
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Old 01-17-2014, 08:40 AM
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7.3 wont crank!

Have an '01 7.3 and had a rusted through oil pan, pulled the engine to replace it, all went well now the engine is back in with a new oil pan, bolted everything up late at night and didn't get to trying to start it until yesterday, so it sat for a while after I put it back in. Engine wont crank. I put the keys in, hear the dinging that the keys are in, but I turn it to the on position and nothing happens, fuel pump doesn't run, nothing. Haven't spent too much time figuring it out yet, but its the weekend and I'd like it to run. Its my only 4x4 and only car with heat, and I'd like to get it going before we get some snow next week so I can make it to work and back. Any help would be greatly appreciated!
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Old 01-17-2014, 08:57 AM
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Fuel Pump not running and the Starter not engaging aren't related I'd think (so you have 2 problems )

Not cranking sounds like the NSSW (Neutral Safety SW). In an Auto, try pulling the selector up past P, N, or even in a gear. Check the switch at the transmissions selector input shaft (black "box" 1/2 way down the drivers side). Next would be the relay, on an '01, either in the fusebox or on top of the pass inner fenderwell. Does it "throw"? On the newer 01's (with that relay in the fusebox) look at fuse #113, maybe the wire to the starter got shorted...

The Pump, it's controlled by the PCM. Do you have a WTS light when you first roll-on the key? If so, could the inertia sw gotten "hit" (pass kick panel)?
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Old 01-17-2014, 09:06 AM
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When I turn the key, I get nothing at all. No fuel pump, no lights, nothing happens except the dinging when I have the keys in but not turned and the door is open. When I turn the key, the dinging stops and no lights or anything comes on. There is a relay that throws in the driver side dashboard fusebox when I turn the key.
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Old 01-17-2014, 09:32 AM
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Headlights won't come on either. A pump (at least what I think is a pump) near the A/C (passenger side fender near firewall) runs when I turn the key. Interior lights work. Both batteries just came off the charger all fuses under the hood are good. Maybe I missed some wiring or something when I reinstalled the engine. Thats all I can think that happened. It ran perfectly when pulled.
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Old 01-17-2014, 10:12 AM
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You said you pulled the motor to replace the rusted oil pan. I am betting that you might have missed a connection to the battery or on the motor harness. Re-check your engine harness and plugs to ensure everything is seated in the modular plugs.

Chuck

03' F250 6.0 SD SC Lariat 100 Year Anniversary Edition
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Old 01-17-2014, 11:02 AM
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Yea, if the Headlights don't turn on, you have a Bad or Missing connection. How about the batteries themselves? Are they dead? How are those connections?
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Old 01-18-2014, 04:25 AM
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Had some time yesterday to actually look it over, took me like 45 minutes to realize I was missing the grounding strap between the motor and the body, right at the passenger side firewall. Felt pretty dumb, but now it fires right up. Found I had broken off the little plastic nipple on the bottom of the power steering reservoir when I had pulled the motor, so now I gotta replace that as well... so I guess its still out of commission. Thanks for the help!
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