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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old Jun 17, 2009 | 02:50 PM
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2 questions

i have a bad skip but only at cruisin speed,already tuned it up and it idles smooth please help!!next problem a little box was hanging from a wire above the rear view mirror it fell off the wire ,the wire looks like an antenna wire anybody have a clue what this thing is?thanx in advance for the help
 
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Old Jun 17, 2009 | 04:24 PM
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How's the fuel pressure? When you tuned it up what exactly did you do?

The wire you're talking about doesn't sound factory.

Always post as much information about your truck when you ask a question - we don't know year, model, or even make.
 
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Old Jun 17, 2009 | 04:27 PM
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this wire and box sound like maybe its for aftermarket alarm or possible an xm radio type system
 
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Old Jun 18, 2009 | 04:32 PM
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my truck is a 88 f-150 4.9six when i tuned it up i changed plugs,wires,cap,rotor,and fuel filter. the truck doesn,t skip at idle only cruising speed .thanks in advance
 
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Old Jun 18, 2009 | 04:40 PM
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It could be an EGR problem too. Have you pulled the codes?
 
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Old Jun 20, 2009 | 01:02 PM
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for some reason i cant pull the codes but the light is on
 
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Old Jun 20, 2009 | 02:48 PM
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If It is a little 2"x2" flat plactic plate then it is part of the alarm system.It is hooked up to the alarm system on my truck and it drove me nuts until i traced the wires back to it.Unforturnity when i got my truck it did not come with the remote to turn it on and off.But if you have one try it .if not then we are in the same boat.If you can get one let me know.
good luck
Jim
 
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Old Jun 20, 2009 | 09:32 PM
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Originally Posted by lennb01
for some reason i cant pull the codes but the light is on
Why not? How are you trying to pull them?
 
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Old Jun 22, 2009 | 08:48 AM
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i tried pullin the code with the plug under the hood and running a wire to the battery and usining a test light but the check engine light doesnt blink out the codes and i dont know why so i gave up on trying
 
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Old Jun 22, 2009 | 12:02 PM
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We really need the codes or we're just guessing at what the problem is.

Try this diagram: Ford Computer Codes

You don't need to run a wire to the battery, or even the test light. All you need is the jumper wire between the signal return and the self-test input. The CE light will blink the codes at you.

A much easier way is to buy a code-reader. I have an Innova 3145 and it makes reading codes super easy.
 
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Old Jun 22, 2009 | 07:47 PM
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thank you for the info i will try to get the codes tomorrow
 
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Old Jun 22, 2009 | 08:34 PM
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wow that looks fun thanks for reposting that link..
 
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