wont start.. need some help - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 12-17-2010, 08:28 AM Thread Starter
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wont start.. need some help

i just got home from being towed from my college ... i got in it started it nd it turned over fine but i forgot my dp tuner was disconnected from the pcm so i turned it off took out the keys connected the tuner then tried to start it and just cranking ... no rpms no nothing just crank and hum of the fuel pump nd same when i disconnected the tuner ... any ideas


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post #2 of 11 Old 12-17-2010, 10:08 AM Thread Starter
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TTT ... Ne ideas ... I'm thinking PCM is effed Nd needs to be replaced ... I hope not tho


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post #3 of 11 Old 12-17-2010, 11:45 AM
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Ok, couple of things,,,,

First, do you have a WTS light when you first roll-on the key?

What's your CPS situation? Did you have it replaced yet? Got a spare to try?

Got fuel in the fuel bowl? Does it dribble out the drain when opened?
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post #4 of 11 Old 12-17-2010, 12:04 PM Thread Starter
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No wait to start that's what leads me to believe it's a PCM issue
There is fuel in the fuel bowl
I have never replaced the cps but I have no idea if the previous owner did but I do not have a spare to throw in on hand


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post #5 of 11 Old 12-17-2010, 12:31 PM
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Ya gotta get that WTS back on...

Check all fuses, especially #30 as well as 19 & 22 be Sure they're All good.

The WTS is the key though, your pcm is not running and you have to find out why....
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post #6 of 11 Old 12-17-2010, 12:34 PM Thread Starter
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And if by chance all of those fuses are functioning you think it could be possible that the PCM went .. Or is that something that nearly never happens (praying that they are indestructible) haha


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post #7 of 11 Old 12-17-2010, 02:56 PM
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They aren't indestructible by any means, but let's not jump right to the Worst case scenario

Fuse #30 powers both the heater in the fuel bowl and some of the pcm. When it first gets cold and that heater is turned on it's not uncommon for it to blow. If you find #30 blown simply unplug the heater at the bottom of the bowl, replace the fuse and you'll be good-to-go!

It's actually Much more likely than a blown pcm.....
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post #8 of 11 Old 12-17-2010, 03:00 PM Thread Starter
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Let's hope it's that ... I'm about to head home from work and check them .... If it's the PCM I'm gonna be screwed haha it starts to snow and the only 4x4 I have fails haha


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post #9 of 11 Old 12-17-2010, 03:22 PM Thread Starter
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So bad news all of the fuses are good .... So Would that automatically mean that the PCM is effed


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post #10 of 11 Old 12-17-2010, 04:20 PM
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Not necessarily, is what you have a chip? I would remove any tune you could, pull out the chip if you have one clean the connector and maybe "re-seat" the pcm plug on the firewall.

Is there power through out the fuse panel? That is, #30-#22-#19 aren't blown but, is there 12v there? Does everything else power-up OK? All the other dash lights work besides the WTS?
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