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speedometer
I have the complete kit and the gauges that came with it (autometer ultralight). I thought the speedometer was digital and could be adjusted by the computer but he says he couldn't do it for some reason.
My question is... are you supposed to be able to change it through the computer or is it mechanical? I have 3.55 gears in the rear end and my speedometer is way off, if I am going about 20mph (this is all a guess because my speedometer isn't working lol) it says around 50
also he couldn't tune it right because he couldn't get it to stop stalling when I come to a light. We called Chip from JMS and he sent a file over that stopped the stalling but it is not running that great... I am just worried that I hooked up something wrong, especially with my speedometer because I had to move some wires around to get the internal lights to work and just wondering if I did something wrong. I posted this question before but didn't get a reply... check it out here.
http://thefactoryfiveforum.com/showt...iring-Question
obviously I want to get this fixed before I put the body on.
Also when I turn the car off sometimes the tach and speedo don't go back to zero. they will sometimes be at 1,000 rpm and like 80 mph
Last edited by jackboeker83; 02-23-2014 at 08:42 PM.
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Senior Member
The speedometer I received from FFR needed to be calibrated. Call FFR for the instructions. The needles not going to zerro when the engine is turned off is normal.
Bill Lomenick
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Senior Member
My Autometer Ultralite Speedo came with installation and calibration instructions. If you can't find yours, PM me and I'll scan mine the send them to you.
David
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Your aftermarket speedometer is not run through the computer like the factory Coyote Mustang's is, so the tuner can do nothing with the PCM that will make it read right. Most aftermarket speedometers have a calibration procedure that involved driving the car exactly one or exactly two miles in a setup mode. This can be done on the street but the most accurate setup is on the dyno where a hyperaccurate distance can be measured.
-Matthew
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Senior Member
To avoid all these issue, I got the AutoMeter GPS module:
http://www.summitracing.com/parts/atm-5289
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I bought a GPS speedo after much hassle considering speed sensor and transmission signal. The problem was I could not get the exact face to match the factory five unit because speedhut cant make the gauges without factory five and they would not give permission to do so.
GPS speedo is awesome!
Originally Posted by
ClemsonS197
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