GUTLESS!!!! - Ford Powerstroke Diesel Forum
 
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post #1 of 10 Old 02-18-2012, 04:47 PM Thread Starter
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GUTLESS!!!!

GUTLESS!! when cold for minimum 20 minutes then all the sudden it wakes up! It's so bad its hard to go up inclines and hills. What the heck do I have to do to fix this issue?
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post #2 of 10 Old 02-18-2012, 08:08 PM
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Does it make a hissing sound during this warm up period? Try disconnecting the EBP valve to see if your get your power back.

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post #3 of 10 Old 02-24-2012, 07:40 PM
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I have sorta the same issue. mine doesn't take 20 minutes. but mine won't go faster then 4 mph. It useally takes everything to get up a slight incline, and if i left off the skinny pedal it takes for ever to get back up to 4mph. but by the time i get to the stop sign. i can useally feel the truck coming alive...i haven't heard this hissing sound but i will pay closer attention tomorrow. i have a feeling it has to do with the cold weather. but we have had such a mild winter that its hard to say what it does in extreme cold condition (under 0 F)...
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post #4 of 10 Old 02-27-2012, 05:00 AM
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So yesterday morning started the truck, think the outside temp was around 42F. Truck cranks for about 5-10 seconds then I play a game with the pedal to keetp it idling. The idl lopes up and down. After a little bit it smoothed out. I put in drive after a few seconds to see how its running. Then away at toddler pace I go(i say toddler pace because I feel that my one year old could keep up with me) , for about the length of a city block. But there is no hissing, and no matter how much skinny pedal, it will not increase the speed. the engine also does not rev up when in gear. Please help, I'm new to diesel power. And want to know if this is normal and I just need to sit in my driveway longer till it warms up
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post #5 of 10 Old 02-27-2012, 03:38 PM
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This is NORMAL. I repeat, NORMAL.

It's the exhaust back pressure valve. EBPV. It's designed to help the truck warm up faster by restricting the exhaust. They include a small book in the glove box that tells you about this and many other normal functions. We call it the owners manual.

If you're too impatient, you can plug in the truck in or delete the EBPV. I'd recommend a lot of searching of the forum before doing either. You may electrocute yourself.

Nonconformist. Functionality over bling.

My three rules for 7.3l troubleshooting: 1) Replace CPS and keep a spare. 2) Replace FPR and know your fuel pressure. 3) Hook it to a scanner and check for codes.
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post #6 of 10 Old 02-27-2012, 03:51 PM
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Hey thanks audicontlr, i appreciate that. but onlike your glove box. mine is empty. and like i said. i am new to diesel. i thought i saw someones post that said the something to the same effects. but i couldn't find anything. and so i figured someone would help a brother out.
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post #7 of 10 Old 02-27-2012, 04:01 PM
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I'm a dick normally so don't take it personally. You purchased a heavy duty piece of machinery for hard earned dollars. You should really get a manual, read it over and understand what you purchased. There are a lot of idiosyncrasies with a diesel that are explained in it including procedures for starting the truck when cold.

Nonconformist. Functionality over bling.

My three rules for 7.3l troubleshooting: 1) Replace CPS and keep a spare. 2) Replace FPR and know your fuel pressure. 3) Hook it to a scanner and check for codes.
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post #8 of 10 Old 02-27-2012, 04:11 PM
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zombies and bacon...............why hasnt anyone thought of this before???????
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post #9 of 10 Old 02-27-2012, 06:02 PM
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It also sounds like you might have a few bad glow plugs (gp).
the lopin and smoothing out is a cyl or 2 is not firing but then cleans up when
enough heat is built up. This could also be part of the reason for no power when cold.
the pcm is already giving it more fuel to compensate for misfiring cyls.
My truck does the same but if i wait till it clears up, it runs fine. Diesels dont like cold
weather especially if the gp system isnt workin.

I would do some searching about glow plugs and system.

Lee

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post #10 of 10 Old 02-27-2012, 06:05 PM
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There are couple stickies in the top of the 7.3 forum.
99-03 7.3L General Discussion - Ford Powerstroke Diesel Forum
Winter Operation, Hard Starting, Hissing Sound Etc...
Troubleshooting GPR & GP's



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