2004 Expy 5.4L V8 Triton, former State Police transport vehicle, owned a couple months.
I bought this a couple months ago. It's a former police vehicle. I have been going over the wiring for days. Currently stuck in a city parking lot near my work.
I pulled into a gas station one morning for coffee and smokes, and when I went to fire up the beast, she cranked with no turn over. The truck ran fine until this happened. No stalls, no stuttering, no apparent loss of power.
My OBDII scanner can't connect to the vehicle, getting stuck waiting for the vehicle to respond, which it never does. The instrument panel self diagnosis test shows one DTC code, d262. I don't know if it is related, but apparently there's a communication failure with one or more modules somewhere. I can confirm that I have never been able to connect my OBDII scanner, having tried it right after buying the vehicle.
I have tested power going into, and coming out of, the internal fuel pump relay. Both sides show a short period of aboitut 12v, dropping to 6.5 or so after a couple seconds. Thinking it may still be the relay, I bypassed it, connecting the fuel pump to a hot fuse and it still would not turn over. I put a second battery in parallel while bypassing the relay, thinking the battery didn't have enough muscle to energize the pump. No luck.
I really REALLY don't want to drop the tank and swap out the fuel pump, but apart from verifying the inertia switch is functional, I'm running out of options. Fuses 31, 32, and 33 show 12v across both sides, 9 as well, and 28 shows 12v when the ignition is in the ON position.
I am holding out hope that a rodent simply chewed a wire, and that I won't have to spend 3 or 4 hours dropping the tank and replacing the pump. I fear that if I do, and it still won't start, I'll go insane.
What else can I do? Mechanics can't see me for at least a month, and I need this running ASAP. I'm open to any suggestions or words of encouragement. I know these old cops cars can be electrical nightmares, and there are plenty of loose cut wires that used to power all those cool toys. So, I'm hoping it's electrical, and not the pump.
Help!
I bought this a couple months ago. It's a former police vehicle. I have been going over the wiring for days. Currently stuck in a city parking lot near my work.
I pulled into a gas station one morning for coffee and smokes, and when I went to fire up the beast, she cranked with no turn over. The truck ran fine until this happened. No stalls, no stuttering, no apparent loss of power.
My OBDII scanner can't connect to the vehicle, getting stuck waiting for the vehicle to respond, which it never does. The instrument panel self diagnosis test shows one DTC code, d262. I don't know if it is related, but apparently there's a communication failure with one or more modules somewhere. I can confirm that I have never been able to connect my OBDII scanner, having tried it right after buying the vehicle.
I have tested power going into, and coming out of, the internal fuel pump relay. Both sides show a short period of aboitut 12v, dropping to 6.5 or so after a couple seconds. Thinking it may still be the relay, I bypassed it, connecting the fuel pump to a hot fuse and it still would not turn over. I put a second battery in parallel while bypassing the relay, thinking the battery didn't have enough muscle to energize the pump. No luck.
I really REALLY don't want to drop the tank and swap out the fuel pump, but apart from verifying the inertia switch is functional, I'm running out of options. Fuses 31, 32, and 33 show 12v across both sides, 9 as well, and 28 shows 12v when the ignition is in the ON position.
I am holding out hope that a rodent simply chewed a wire, and that I won't have to spend 3 or 4 hours dropping the tank and replacing the pump. I fear that if I do, and it still won't start, I'll go insane.
What else can I do? Mechanics can't see me for at least a month, and I need this running ASAP. I'm open to any suggestions or words of encouragement. I know these old cops cars can be electrical nightmares, and there are plenty of loose cut wires that used to power all those cool toys. So, I'm hoping it's electrical, and not the pump.
Help!
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