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post #1 of 7 (permalink) Old 12-27-2009, 08:05 PM Thread Starter
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idles but no gas pedal

Hoping for some help. I had a problem with my F450 4X4 auto 7.3 p.s. last week where i lost the gas pedal. Turns out it was a fuse blown. Worked for 2 days and same thing happened again, but the fuse is good. We lose the dash (speedo,tach etc) also when this happens. Probably a broken wire or short, it did possibly make a little smoke before the pedal stopped working, but the fuse being good is very strange to me. Any help would be appreciated. Thanks.
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post #2 of 7 (permalink) Old 12-27-2009, 11:13 PM
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Check the harness under the valve covers. It is know to short and here is a link.

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post #3 of 7 (permalink) Old 12-28-2009, 08:27 AM
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Dead pedal assaemblies were an issue for a while, I just can't remember which years. I believe it was early 2000's but it may have went back to 99's. if you know someone else with the same pedal assembly, maybe they would you switch it out to try it.
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post #4 of 7 (permalink) Old 12-28-2009, 09:59 AM Thread Starter
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I have had the valve cover wire harness problem in the past but it seem to make a no start situation. In this case it runs but the electronic gas pedal isn't being read. I guess I should not rule the harness out since we do seem to have some sort of wiring problem. Phil G, our truck is an 02, I have an 09 I'll check and see if it's the same pedal. Thanks for the replies so far. Jim
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post #5 of 7 (permalink) Old 12-28-2009, 11:31 AM
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Jim...i know the 04-08 f150's have had this problem....truck would idle but no throttle imput....a pedal replacement would fix this on these series of trucks...Not sure if the SD's are like this.

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post #6 of 7 (permalink) Old 12-28-2009, 04:43 PM
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what fuse was blown?the fuel heater in filter housing was known to short out.

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post #7 of 7 (permalink) Old 12-28-2009, 05:37 PM Thread Starter
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Okay, we found we have 2 problems. I got the pedal back, it was a wiring problem in the actual fuse panel, we bypassed the fuse with an inline fuse and got our pedal back. Once it got running, it starts running rough after a few minutes wanting to stall. I'm going to have it scoped to see if it tells us what the deal is. We're thinking it could be the injector module or the cam position sensor, or maybe even that harness on the valve cover.
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