No power, can't pull any codes - Ford Powerstroke Diesel Forum
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Old 04-01-2007, 09:40 PM
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No power, can't pull any codes

2000 F350, 6 speed, 4" exhaust, Xpower chip

So there I was, getting up to speed on the highway going about 60 mph. Everything was normal and then, just as someone hit a switch, the motor lost almost all power. I was about 5 miles from home and had to limp it the whole way. I could only get about 45 mph out of it.

So I get home thinking it may be a bad fuel filter. Nope, put spare in still ran the same. I also changed out the CPS with the spare and no change. The vehicle has had all regular maintainance done. Oil was changed last week, and still full. It starts right up, but then runs for crap. A little more smoke out the exhaust than usual. No leaks visible. All electrical in good shape, no corrosion, very clean. HPOP is full also.

Ok so the part that bugs me is the trouble code reader. I go and get one from Auto Zone, they rent the Actron OBD-II. Plug it in and get no link. It won't read any codes and the engine light is on. I tried many, many times and got nothing. I go back and they assure me that it works fine. I do know that when the Xpower chip was installed the mechanic bypassed some wiring to avoid some sensors(not sure which yet). Could this be the reason I can't pull any codes.

Any suggestions are appreciated. Thanks
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Old 04-02-2007, 08:31 PM
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Second try

Ok, pulled the chip and the Actron worked but still no codes. Still runs very rough and engine light is on.

Went to a buddy's house and borrowed his Snap On reader. Gave me a code P0261 CYL 1 INJ CKT LOW. Finally I have something to go on.
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Old 04-02-2007, 08:35 PM
im fat and ugly


 
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keep this bumped up and i hope you get help with it, wish i could

oh and let me be the first to you powerstroke.org
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Old 04-02-2007, 08:41 PM
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im not an expert either so im gonna bump this up for ya.... im assuming bad injector...have you also checked all your boots on the turbo tubes... make sure there not leaking...
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Old 04-02-2007, 08:42 PM
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P0261 Injector Circuit Low - Cylinder 1

Maybe a buzz test and cylinder contribution test are in order...
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Old 04-02-2007, 08:42 PM
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to the org hope you get it figured out
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Old 04-02-2007, 09:03 PM
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Did a buzz test and it still confirmed code P0261, all other injectors checked out ok. I'll check the wiring on #1 injector tomorrow and maybe replace injector if it still has the problem.

It has 140,000 miles and I have all the reciepts. Doesn't look like any injectors have been replaced. Is it common for them to fail?

I won't ask any more questions until I check out the wiring.

Oh yeah, the boots on turbo tubes are ok

Thanks
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  #8  
Old 04-02-2007, 09:05 PM
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Quote:
Originally Posted by Maintain View Post
P0261 Injector Circuit Low - Cylinder 1

Maybe a buzz test and cylinder contribution test are in order...

You are correct Maintain, but also need to check the UVC wiring harness as well for that injector. From my understanding the UVC ( under the valve cover wiring harness) likes to melt and cause a short which then causes the truck to run like crap. Also need to check the UVC Connection at the valve cover as that maybe the bad connection, I doubt it is as you only get the trouble code for the one cylinder.
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Old 04-02-2007, 09:12 PM
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Thanks bigcountrysg, I'll take a look at the UVC harness under the valve cover and let you know. From the outside it looks fine, I made sure it was connected good.
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Old 04-02-2007, 09:17 PM
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Quote:
Originally Posted by iamthedemoman View Post
Thanks bigcountrysg, I'll take a look at the UVC harness under the valve cover and let you know. From the outside it looks fine, I made sure it was connected good.

No problem, my statement about the connection and only having one trouble code, is supported by this statement. If the connection was bad outside the valve cover you most likely would have trouble codes P0261-P0270 which would be injector trouble codes for cylinders 1-4, P0271-P0284 which are injector trouble codes for cylinders 5-8. I believe you have a short in the wiring for injector 1, or injector 1 is bad and needs replacing.
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