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Old 10-15-2008   #1 (permalink)
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Angry 2005 V6 Speedometer trouble

So my speedometer is jumping ahead about 25 MPG than my actual speed... what is going on, what can/ should i do... please help ASAP, thank you.
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Old 10-15-2008   #2 (permalink)
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theres some great people here that might be able to help you, but i can tell you one thing, you need to supply more info. have you used a tuner? have you changed your rear end or anything else? messed with any electrical? when did the proplem start, ect. any info would help i`m sure.
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Old 10-15-2008   #3 (permalink)
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Did you change gears or your tire size?
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Old 10-15-2008   #4 (permalink)
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Ok here's more info... bought the car from a small dealer about 3 months ago, only thing changed was a new battery, fuel filter, and i changed the rear tail light bulbs to sequential, and new tires. Roughly 33,000 miles on the car... no other problems.. please help.. =)
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Old 10-15-2008   #5 (permalink)
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The speedometer is controlled entirely by the powertrain control module. It has no physical cable or gears to fail. Sounds to me like it's an issue with the PCM. Is the car still under warranty?
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Old 10-15-2008   #6 (permalink)
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long story short, no, but i'm workign a deal with my saleman and he's working on a warranty for me... PCM...what(my first stang...i got my ears, eyes and mind wide open for learning the ins and out on it), thx
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Old 10-16-2008   #7 (permalink)
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33K and no warranty? yeesh..
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Old 10-16-2008   #8 (permalink)
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previous owner bought the car in 04,, when it was an o5 car, and so that warranty expired... but the dumb dealer sold me the car telling me it had one, and i busted him and now he's paying for a new 3 year bumper to bumper warranty... and if he didn't it would have been court....he took the easy way out, and i'm happy. .. So the Speedo is working now... must of been a bad day ro something...?
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Old 10-16-2008   #9 (permalink)
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Quote:
Originally Posted by mellowyellow05 View Post
previous owner bought the car in 04,, when it was an o5 car, and so that warranty expired... but the dumb dealer sold me the car telling me it had one, and i busted him and now he's paying for a new 3 year bumper to bumper warranty... and if he didn't it would have been court....he took the easy way out, and i'm happy. .. So the Speedo is working now... must of been a bad day ro something...?
So it fixed itself?
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Old 10-16-2008   #10 (permalink)
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For now i guess, once my warranty is completed and activated i'll bring it to the ford dealership and them take a peek.
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Old 10-21-2008   #11 (permalink)
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I have a problem with my speedo, the needle is sitting below the zero and I have a tune in my car will that cause it to fail?
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Old 10-21-2008   #12 (permalink)
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(above) you should start a new thread
..UPDATE on my speedo.. it's back to it's old tricks... a friend in another sq. who drags his stang said the lube on my cable might be hardening up in the morning, considering that is th eonly time it acts up...
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Old 10-21-2008   #13 (permalink)
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It's electronic - no cable
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Old 10-28-2008   #14 (permalink)
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So, Mellow, have you fixed the problem? We have one in our shop that has no speedo but has odometer. We suspect the pcm, but would like to prove it out. Our scan tool won't communicate as well. Let me know what you find please.
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Old 10-31-2008   #15 (permalink)
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Quote:
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So, Mellow, have you fixed the problem? We have one in our shop that has no speedo but has odometer. We suspect the pcm, but would like to prove it out. Our scan tool won't communicate as well. Let me know what you find please.

...so Ford has decided they want to change the whole "cluster" where my gages are... only problem my dealer that i bought the car from hasn't turned in myc heck for my warranty... he's startign to really piss me off!! ..So any one know about that cluster..?
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