7.3 no start
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7.3 no start
So I have a 95 f250 7.3 standard I replaced the turbo pedestal o rings and installed a intercooler from a 2003 7.3 I also removed the fuel bowl to remove a mouse nest from underneath, so I put everything back together whent to fire up the truck started right up ran for few seconds and died (probably air in the line) whent to try and blead it and my glow plug relay wouldn't work and the light doesn't come on in the cab also obd2 scanner can't connect to the computer (I know it is supposed to cuz I've done it before with my Bluetooth scanner) it won't start at all now I cracked the return fuel line and it pours fuel out so seems like it should be blead so I got my dad to pull it while I dumped the clutch and tried to pull start it. Still wouldn't start I don't know what the problem is has anybody ever delta with this before? Thanks in advance
Ps sorry for the bad wording I suck at trying to explain things
Ps sorry for the bad wording I suck at trying to explain things
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Freshman User
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The wiring is good I've gone over it a bunch of times. And the nut is still on the ipr what I find weird is that it started but once it stalled it wouldn't start again, I'm gonna take the ipr out and clean it,
Laughing Gas
Joined: Jan 2016
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From: Fl.
with dash light not on and not able to connect scan tool sounds electrical. Checked fuses under hood and in cab?
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Ya fuses are all good I know the glow plug relay is shot and I need to order a new one but the glow plugs do work if u cross the polls on the relay
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Laughing Gas
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From: Fl.
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Hotshot
Joined: Jan 2012
Posts: 11,132
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From: Southern West Virginia
If fuse #22 in the distribution box under the hood isn't blown, and you know your GPR is shot, then disconnect the two small wires from the GPR and tape the ends of them up so they don't touch anything. One of those small wires is a ground supplied by the PCM. If you have no wait to start light on the dash, that usually means no power to the PCM. If the GPR is shorted internally, it can put 12v back to the PCM on that ground wire and cause all sorts of problems. I would double check fuse #22 though, because that is the fuse for the PCM and also the fuel bowl heater which is very common to short and blow that fuse, and since you had the bowl out moving it around, there is a good possibility the bowl heater shorted and blew that fuse.
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Freshman User
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If fuse #22 in the distribution box under the hood isn't blown, and you know your GPR is shot, then disconnect the two small wires from the GPR and tape the ends of them up so they don't touch anything. One of those small wires is a ground supplied by the PCM. If you have no wait to start light on the dash, that usually means no power to the PCM. If the GPR is shorted internally, it can put 12v back to the PCM on that ground wire and cause all sorts of problems. I would double check fuse #22 though, because that is the fuse for the PCM and also the fuel bowl heater which is very common to short and blow that fuse, and since you had the bowl out moving it around, there is a good possibility the bowl heater shorted and blew that fuse.
Hotshot
Joined: Dec 2012
Posts: 11,267
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From: Las Cruces New Mexico
Might be your ignition switch. Unplug the fuel bowl heater just in case. Are you sure the GPR is working correctly? If you can't communicate with the pcm check your in dash fuses can't remember the fuse # though.
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I Checked the dash fuses and the ones under the hood all are good.