Huh??? What the...!!?? - Ford Powerstroke Diesel Forum
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  #1  
Old 10-22-2013, 03:30 PM
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OBS quit while running, turns over, no start, CPS good, no wait to start light

Hmmmm.....

Started the BIG truck yesterday. I decide to let her warm up so I jump down, start walking away and she shut down. No hesitation, no sputtering just off, like a light switch.

This really raised an eyebrow bc I replaced the cps about a month ago. But this is where it gets interesting. I hop back in. Let me rephrase that, I climb back up into the cab, lol turn the key, wait to start does not come on and there is no glow plug relay "click". Try it several times, and same thing. The truck sits a lot so she is somewhat temperamental if not started in awhile. Quick spray of ether... Nope.

To make it even more interesting, I plugged my code reader in to see if I threw and error and it won't connect! It says to check connection. Hmmmm.

I'm sure ill figure it out, but hey, why not hear what the stroke family has to say. It got dark, so ill be checking fuses tomorrow. Any takers?

Last edited by mturner2003; 10-24-2013 at 11:51 AM. Reason: Better title for searches
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Old 10-22-2013, 04:21 PM
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Sounds like no power to PCM.
Check relay 1 and fuse 9on the chart below. Good luck.
1996 Bronco/F-Series
Might as well check all the fuses while your there.
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Old 10-22-2013, 06:21 PM
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Probably the fuel bowl heater shorted our, causing the fuse to the pcm to blow...its a 30 amp fuse. The fuel bowl heater is the wire connector on the back of the fuel bowl, drivers side. Basically the only connector on it. Unplug that connector, and replace the fuse that's blown and crank it up.

You can replace the heater or not. I haven't had mine plugged in because it shorted out 4 years ago.

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Old 10-22-2013, 06:40 PM
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I thought only 99-03, 7.3s had fuel bowl heaters?? I'm talking about my 97'.
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Old 10-22-2013, 06:55 PM
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I think they all had them..but not totally sure

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Old 10-23-2013, 04:38 AM
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All OBSes did for sure. There are actually three connectors on the fuel bowl (heater, WIF sensor, filter sensor); the heater is the single red/green wire.
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Old 10-23-2013, 04:48 AM
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Hmm. Didn't know that. I figured cause it didn't have a solenoid like 99-03 it didn't have it.
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Old 10-23-2013, 04:51 AM
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The "solenoid" on the SDs is a RELAY for the AIR heater. Not related to the fuel filter heater in any way.
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Old 10-23-2013, 06:20 AM
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Gotcha. Thanks. Learn something new everyday.

I'll be checking fuses tonight. I'll post what I find.
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Old 10-23-2013, 06:36 AM
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Here is another piece of information I left out that may be important.

I recently installed a Superchips 1705 in the truck. Check this out this post I've found. EXACT SAME SYMPTOMS, except he ran into an error while installing the program. My program loaded fine, and ran fine, until the sudden quit. That's where the same symptoms are similar.

Issue changing tunes - truck won't start - superchips 1705 - Diesel Forum - TheDieselStop.com
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