P0193

WSUcowboy

500 club baby!!
Aug 7, 2006
512
0
16
Spokane, WA
fuel rail pressure sensor high voltage. I'm trying to start the truck and this is the code I am getting....

also B1004 and B0159 any ideas?
 

JoshH

Daggum farm truck
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Did you get your fuel pressure regulator plugged in good?

B1004 is supposedly some sort of "keep alive memory reset" code, and B0159 is "outside air temperature sensor range/performance" or something like that.
 

JoshH

Daggum farm truck
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Feb 14, 2007
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The one that goes down to the regulator on the CP3. Not sure how it is on the LB7s, but on the LBZs there's acutally a short pigtail that goes between the engine harness and the regulator. So you need to check 2 possible bad connections.
 

WSUcowboy

500 club baby!!
Aug 7, 2006
512
0
16
Spokane, WA
seems to be fine, I unplugged it and plugged it back in, the truck just cranks and cranks like its not getting any fuel and there is the P0193 code....
 

JoshH

Daggum farm truck
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Feb 14, 2007
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What kind of rail pressure are you seeing? When I first started my truck after having it out for the first build I had a buddy of mine pump the filter primer while I was cranking on it to get fuel.
 
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WSUcowboy

500 club baby!!
Aug 7, 2006
512
0
16
Spokane, WA
not sure, I have a MITUSA and I primed it quite a bit, when I crack the bleed screw on top of the filter housing the fuel is under some pressure there, the high voltage thing concerns me a bit....
 

JoshH

Daggum farm truck
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Feb 14, 2007
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I'm not 100% sure, but I think it's on the driver's side.
 

JoshH

Daggum farm truck
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Feb 14, 2007
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The rail pressure sensor being unplugged could keep it from starting. It won't know it doesn't have enough rail pressure to start.
 

JoshH

Daggum farm truck
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Feb 14, 2007
13,699
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So does that mean it's running now???

edit: Just saw your other thread! Glad I could help.
 
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