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  #1  
Old 01-16-2009, 02:13 PM
BRS BRS is offline
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help 99 7.3 stalling while driving

Ok, been driving at least 45 mins in 10 deg weather about 50mph constant, push on accelerator and no response then truck starts dying. SES light comes on, make it to top of exit ramp and it finally dies. Let it sit for a min and starts back up but really rough. Then let it idle for 15 mins in a parking lot, again really rough. Then it died again. Any ideas folks?

99 F350 7.3L, auto.

Thanks,

Ben
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Old 01-16-2009, 02:17 PM
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(1) Check screen in pressure regulator bolted to side of fuel filter. Clean with carb cleaner.
(2) Fuel pump is getting old.
(3) Fuel pickup screen in fuel tank is blocked.
(4) fuel filter is clogged.
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Old 01-16-2009, 02:18 PM
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Gelled up ? Try a new filter.
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Old 01-16-2009, 02:51 PM
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Thanks guys, I've got a spare filter, so I'll try that first. Thought my fuel treatment would stave off the gelling in these frigid temps, but maybe the filter is just too dirty.
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Old 01-16-2009, 02:58 PM
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it almost even sounds like an idm problem but could be a fuel delivery problem too
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Old 01-16-2009, 03:05 PM
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CPS......?
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Old 01-16-2009, 03:11 PM
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Quote:
Originally Posted by gonestrokn View Post
CPS......?
X2
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Old 01-16-2009, 04:34 PM
BRS BRS is offline
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Just got it towed and there's a giant oil puddle all underneath it, and underside is covered in oil, so that explains the lack of fuel. There's oil between the trans and block underneath, not much oil in the valley, so must be the back side of the turbo.
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Old 01-17-2009, 01:51 PM
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Filled with oil today, started in the driveway, and let it run for about 10~15 minutes. Ran for about 10+ minutes before oil started dripping, then a slow stream started. Looking in the valley with a flashlight, I saw a steady stream dead center in the valley flowing from the front underneath the HPOP. At least 3 quarts poured out while I was watching.

Pulled the HPOP, but now I'm lost. From the label, this is obviously a rebuilt pump. I bought the truck in April, with little history on it. It doesn't look like the hose connections leaked. Do people ever get leaks on the plate where the HPOP bolts to the block? I've seen several posts on this (see arrow) bolt leaking, but I can't tell if that's what it was or not. Any ideas folks?



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Last edited by BRS; 01-17-2009 at 01:56 PM.
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  #10  
Old 01-17-2009, 02:10 PM
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Mine leaked out of that bolt. I pulled the bolt out and the O-ring was half gone and deteriorated. I bought an O-ring kit from ford for that O-ring and the O-rings for the fittings where the 2 lines go into the pump and that fixed it. At first i thought mine was leaking out of the gasket where the pump meets the block so i put a new gasket on and it still leaked and then i found the O-ring problem. Hope this helps.
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