Speedo is off even with tune
04-28-2014, 06:40 AM
#14
6th Gear Member
Thread Starter
Join Date: Aug 2011
Location: Thomasville, NC Where we beat headers into submission!!
Posts: 7,233
I'll see if Nitto lists the Revs for their tires.
I will say that with the 275/40-17's on the back and now the 315/35-17's it seemed the same, maybe a MPH or 2 difference.
04-28-2014, 01:52 PM
#15
3rd Gear Member
Join Date: Sep 2006
Location: El Paso, TX
Posts: 700
man I don't know what else to suggest. Maybe you can go in to the diagnostic mode that allows us to get a digital display of the speed (in the trip/miles little screen). It also allows you to do a full sweep of the needles and see if the speed needle is sticking/lagging or something. i guess the only other option is a faulty vss.
04-28-2014, 02:39 PM
#16
Gentleman's Relish
Join Date: Feb 2005
Location: AZ
Posts: 13,090
Make sure one of these is not installed...
http://www.americanmuscle.com/ford-s...tool-9410.html
Poor man's speedo recal after changing gears....
http://www.americanmuscle.com/ford-s...tool-9410.html
Poor man's speedo recal after changing gears....
04-28-2014, 02:43 PM
#17
6th Gear Member
Thread Starter
Join Date: Aug 2011
Location: Thomasville, NC Where we beat headers into submission!!
Posts: 7,233
man I don't know what else to suggest. Maybe you can go in to the diagnostic mode that allows us to get a digital display of the speed (in the trip/miles little screen). It also allows you to do a full sweep of the needles and see if the speed needle is sticking/lagging or something. i guess the only other option is a faulty vss.
Make sure one of these is not installed...
http://www.americanmuscle.com/ford-s...tool-9410.html
Poor man's speedo recal after changing gears....
http://www.americanmuscle.com/ford-s...tool-9410.html
Poor man's speedo recal after changing gears....
04-28-2014, 02:54 PM
#18
Gentleman's Relish
Join Date: Feb 2005
Location: AZ
Posts: 13,090
man I don't know what else to suggest. Maybe you can go in to the diagnostic mode that allows us to get a digital display of the speed (in the trip/miles little screen). It also allows you to do a full sweep of the needles and see if the speed needle is sticking/lagging or something. i guess the only other option is a faulty vss.
http://www.mustangworld.com/ourpics/fcar/dtcodes.htm
04-28-2014, 03:03 PM
#19
6th Gear Member
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Join Date: Aug 2011
Location: Thomasville, NC Where we beat headers into submission!!
Posts: 7,233
That's pretty frick'n cool!
Also, the car came with the t-45 trans but I found a hand written list of "mods" in the owners manual pouch and it lists a t-5 trans. I wonder if they actually did a tranny swap for some reason. I know the final ratio of the two is different.
Is there an easy way to visually identify the transmission?
Also, the car came with the t-45 trans but I found a hand written list of "mods" in the owners manual pouch and it lists a t-5 trans. I wonder if they actually did a tranny swap for some reason. I know the final ratio of the two is different.
Is there an easy way to visually identify the transmission?
04-28-2014, 03:12 PM
#20
Gentleman's Relish
Join Date: Feb 2005
Location: AZ
Posts: 13,090
A T-5 tranny can also use a Speedo correction Gear. They are usually color coded...
http://www.latemodelrestoration.com/...ter-Correction
I believe the T45 bell housing is integrated into the case (1-piece) and not attached with bolts like the T-5. Not certain though.
I guess the other thing you could check is the fact if there is a replaceable gear in where the speedo cable goes? If there is then you know it's a T5, if not, then it's a T45.
http://www.latemodelrestoration.com/...ter-Correction
I believe the T45 bell housing is integrated into the case (1-piece) and not attached with bolts like the T-5. Not certain though.
I guess the other thing you could check is the fact if there is a replaceable gear in where the speedo cable goes? If there is then you know it's a T5, if not, then it's a T45.