99' f450 7.3l hard starting runs fine then shut down. - Ford Powerstroke Diesel Forum
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Old 01-16-2008, 03:07 PM
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99' f450 7.3l hard starting runs fine then shut down.

Hey,
I hope some one has some suggestions. The truck hardly starts but once it does it idls fine. It runs fine while driving it but once we come to a red light or stop sign it stalls,it shuts down just like if I would turn the key off. And once it's stalled it won't start up again and has to be pulled. Any suggestions??

And one question does the power stroke use 2 fuel pumps. Like a supply pump and a high pressure pump? If so where are they located. Thanks.
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Old 01-16-2008, 03:10 PM
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The PSD uses one fuel pump. It is located on the frame rail on the driverside. Then it uses a HPOP High Pressure Oil Pump to pressure the fuel for the injectors. Then the injectors use electric signal to spray the fuel into the cylinders.

I suggest you have the truck scanned for codes and then go from there.
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Old 01-16-2008, 04:18 PM
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Thanks bigcountrysg
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Old 01-16-2008, 04:24 PM
duct tape & zip ties

 

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Quote:
Originally Posted by Rjames View Post
Thanks bigcountrysg
No problem man. That is why we are all here.
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Old 01-22-2008, 02:37 PM
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FOUND THE PROBLEM!!! The o-rings on the outside of the injectors were in really bad shape. After we put new 0-rings on it started nicely
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Old 01-22-2008, 02:54 PM
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Glad to hear you got it figured out
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