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Old 05-22-2007, 09:22 PM   #1
brettstgermain
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speedometer outta controll

help.. my speedometer is goin crazy.. i have a 1995 mustang v-6 3.8. 5 speed manual tranny. when i go through the gears to get up to speed my speedometer seems to be about 15 mph fast... and stops accelerating at about 78.. even though i know im goin alot faster..also when i go through the gears the speedometer goes alot faster than the tach like i had NOS on steroids. and sometimes the speedometer doesnt work at all..... and we all know that a 6 cyl. mustang isnt that fast...its freaky.. the odometer seems to be working perfectly..somethings definitely wrong here. any ideas or suggestions please help. -Brett

Last edited by brettstgermain; 05-24-2007 at 06:26 PM.
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Old 05-31-2007, 10:09 PM   #2
reekor
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Re: speedometer outta controll

Sounds like a speed sensor problem. Hook up a scan tool and see what the speed sensor is doing via scan tool while this is happening.................


Quote:
Originally Posted by brettstgermain
help.. my speedometer is goin crazy.. i have a 1995 mustang v-6 3.8. 5 speed manual tranny. when i go through the gears to get up to speed my speedometer seems to be about 15 mph fast... and stops accelerating at about 78.. even though i know im goin alot faster..also when i go through the gears the speedometer goes alot faster than the tach like i had NOS on steroids. and sometimes the speedometer doesnt work at all..... and we all know that a 6 cyl. mustang isnt that fast...its freaky.. the odometer seems to be working perfectly..somethings definitely wrong here. any ideas or suggestions please help. -Brett
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Old 06-18-2007, 08:50 PM   #3
brettstgermain
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Re: speedometer outta controll

i changed the speed sensor.. put a new one in it and still no change.. lately its been staying on zero when im up in 3rd gear from a start.. i smack the dash and it goes up to where its supposed to be.. then its fine for a few minutes untill i get up near 70-80 then its bouncing back and fourth...any ideas.. thanks..-Brett
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Old 06-19-2007, 12:13 AM   #4
reekor
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Re: speedometer outta controll

Check the connection at the speedo, my bet is that it's the speedo itself.



Quote:
Originally Posted by brettstgermain
i changed the speed sensor.. put a new one in it and still no change.. lately its been staying on zero when im up in 3rd gear from a start.. i smack the dash and it goes up to where its supposed to be.. then its fine for a few minutes untill i get up near 70-80 then its bouncing back and fourth...any ideas.. thanks..-Brett
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His, 96 Limited, 5.2 Magnum, Magnaflow CatBack System, HID Head & Fog Lamps, 242 T-case swapped , Rear Trac-Loc. Chrome grill added to match the wheels.

Hers, 96 Limited I6, 242 T-case, HID Head & Fog Lamps.
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