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7.3 Powerstroke 99-03 Powerstroke Discussion

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Old 05-14-2010, 03:00 PM   #1
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lost throttle and seems to be misfireing

like the title says i lost throttle then cel came on also i have replaced the icp ipr but it still seems to missfire or loose power for just a sec but continues to do it when throttle is in a constant place doesnt do it when excelerating or slowing down. about 55 is the worst.
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Old 05-16-2010, 02:49 PM   #2
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bump
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2000 ford f250 4x4 stockish
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Old 05-17-2010, 09:21 AM   #3
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bump
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2000 ford f250 4x4 stockish
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Old 05-17-2010, 08:00 PM   #4
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scan tool
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Old 05-17-2010, 09:17 PM   #5
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no codes
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2000 ford f250 4x4 stockish
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Old 05-17-2010, 09:20 PM   #6
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not code scanner a scan tool one that can actually read what the engine is doing
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Old 05-18-2010, 12:29 PM   #7
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such as auto ingenuity
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2000 ford f250 4x4 stockish
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Old 05-18-2010, 12:34 PM   #8
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possibly the high pressure oil pump or maybe you have a bad injector.
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Old 05-18-2010, 05:55 PM   #9
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dammit i have to find one around stephenville that has autoenginuity
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Old 05-18-2010, 11:34 PM   #10
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Sounds like maybe a fuel issue.
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Old 05-19-2010, 12:26 AM   #11
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thats what a friend said but im not sure where to start
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Old 05-19-2010, 08:11 AM   #12
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Possibly check the under valve cover harness. The plug is known to come loose under the valve cover. Ford acually makes a shim to fix this. Or you can cut the edges off a quarter and use it. Much cheaper. Find someone that can do a injector buzz test. That will tell alot too.
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Old 05-19-2010, 12:55 PM   #13
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ok first im gona do the buzz test just so i know where to start
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Old 05-20-2010, 04:12 PM   #14
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problem solved took it to the local stealership and they said they are gona try and reflash pcm but is not i have to get a new one thanks to all who helped
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Old 05-21-2010, 09:52 PM   #15
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Somethin tells me thats not gonna fix it..Let us know what you find out.
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Old 05-22-2010, 04:50 AM   #16
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If the CEL came on then there should be a code, I would bet a CPS if it dies and refires going down the road but without being able to look at the pcm data your are just throwing parts at will
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Old 05-24-2010, 02:44 PM   #17
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got it on about to run it
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2000 ford f250 4x4 stockish
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Old 05-25-2010, 10:57 AM   #18
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not it back to step one
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2001 goat lotta air and even more fuel
 
Old 05-25-2010, 07:16 PM   #19
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Check the uvch?
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Old 05-25-2010, 09:58 PM   #20
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Id say fuel system..

Just to clarify... What year and style is this truck?
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