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post #1 of 22 (permalink) Old 02-25-2010, 06:38 PM Thread Starter
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Problem with My 97 F150

The codes it throws are as follows. P1506, P0401, P0304, and P0000 6 times.
1506=Idle Air Control Over Speed Error
0401=related to the EGR somehow, not sure the specific code
0304=continous misfire on cylinder #4
Also when I accelerate hard the OIL psi gauge drops and the light comes on but then goes back to normal.
This is a video at idle.




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post #2 of 22 (permalink) Old 02-25-2010, 06:50 PM
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sounds like you need to turn the radio station off of country that is your problem and it also sounded like someone was blowing an air horn too.
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post #3 of 22 (permalink) Old 02-25-2010, 06:51 PM Thread Starter
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the air horn sound was the idle



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post #4 of 22 (permalink) Old 02-25-2010, 06:54 PM
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oh and sorry camo i was just kidding lol

umm i would guess that you have a spark issue if you have a cylinder miss firing. maybe coil pack?
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post #5 of 22 (permalink) Old 02-25-2010, 06:57 PM Thread Starter
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yeah thats what the f150 forums say it's probably the coil pack, and then I guess the EGR is just clogged, what about that other code?



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post #6 of 22 (permalink) Old 02-25-2010, 06:59 PM
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umm do you have an idle air motor thingy? maybe that is bad? or maybe you have a vacuum leak somewhere?

---------- Post added at 08:59 PM ---------- Previous post was at 08:59 PM ----------

does is idle too high?
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post #7 of 22 (permalink) Old 02-25-2010, 07:00 PM Thread Starter
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nah it idles at normal rpms, the idle goes up whenever that air horn noise comes on though



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post #8 of 22 (permalink) Old 02-25-2010, 07:00 PM
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What are you doing?

Whats wrong??



lmao
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post #9 of 22 (permalink) Old 02-25-2010, 07:03 PM
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wow G lol. and yeah camo that air horn noise blows my mind lol
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post #10 of 22 (permalink) Old 02-25-2010, 07:05 PM
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1. Plugged egr or cat causing code
2. Vac leak causing sound
3. bad coil / bad plug causing misfire
4. country music causing truck to be depressed and suicidal.
5. speedo stuck at 20 mph.
6. MAP or MAF sensor? I would fix other problems first then look at this one. If you have a bad misfire it can cause other codes.

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