7.3 No start no codes - Ford Powerstroke Diesel Forum
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Old 01-09-2012, 04:08 PM
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7.3 No start no codes

I dont know much about a 7.3 since my first PSD was a 6.0.
This is a 01 that will not start, no codes. We can put a gas rag over the intake and it will fire up but misses. It will not crank with out help. Fuel is good and filter is good. Any suggestions
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Old 01-09-2012, 04:17 PM
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Does the WTS light come on with the key turned on?
You say it won't crank without help. Do you mean it won't turn over without help or do you mean fire and run?
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Old 01-09-2012, 04:37 PM
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What I meant by help was that if you hold the gas rag over the intake it will crank, other wise it will not. Im not sure on the WTS light. We will be messing with it more in the morning because its raining now. If the light is not coming on what are we looking at?
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Old 01-09-2012, 04:49 PM
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Quote:
Originally Posted by smuesse View Post
What I meant by help was that if you hold the gas rag over the intake it will crank, other wise it will not. Im not sure on the WTS light. We will be messing with it more in the morning because its raining now. If the light is not coming on what are we looking at?
If the Wait to Start (WTS) light is not coming on, it means the PCM is not getting power.... It's most likely the Fuel Bowl Heater is bad, and the fuse is blown.

Check all your fuses.

And DO NOT put the gas rag over the intake or use starting fluid... thats a great way to damage the engine, intake, and/or yourself.

IF the fuse is bad, unplug the Fuel Bowl Heater, replace the fuse, then try to start it.


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Old 01-09-2012, 04:50 PM
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So no gas rag means the motor won't turn over?
No WTS means the PCM has no power. Usually the fuel bowl heater shorts out, blows a fuse, and that fuse usually has the PCM on it also. So you unplug the bowl heater, replace the fuse, and should be good if that's it.
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Old 01-09-2012, 05:32 PM
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We will stop with the gas rag. If the wts light is coming on, are there any tips for checking other things. I'm trying to get a game plan together for the morning.
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Old 01-09-2012, 06:13 PM
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Make sure the fuel pump is running and filling the bowl.
Make sure you're getting oil pressure while cranking.
Could try a CPS swap for the heck of it.
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Old 01-09-2012, 06:15 PM
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CPS is the cam sensor on the passenger side front correct?
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Old 01-09-2012, 07:23 PM
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Yea that's it.
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Old 01-11-2012, 06:54 AM
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Still not running. We are thinking a bad PCM. The Fuel pump is running and filling up the bowl, we are getting oil pressure when cranking, and we put in a new CPS.
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