I can't help but be annoyed at my speedo. When I bought it I knew it has 4.10 but when i go only 35 my speedo says 70.
What do I need to fix this.
I've seen/heard that a tune will fix it but only from 96+..and I need a gear for 95 and older...someone enlighten me? Thank you

Btw the guy who did the gears recalibrated the RPM but not the speedo..

 

There is a reason why they left it no doubt, it a huge PIA and costs extra cash.


There are 2 options:

Option 1: get a speedcal and be done with it.http://www.dallasmustang.com/pages.php?pageid=37
and yes it wil work with 94+ cars.

Option 2: You have to change the drive gear on the output shaft of tranny, this means removing the tailshaft housing. You need to change the drive to a 6tooth ( your year should be an 8 ) and then you can use the correct black 20 Ford driven gear for the 4.10s.


The most you can go right now with your 8 tooth would be a drive gear for 3.27 gears so it's no good. Some guys have used drive gear from other makes but keep in mind the do not mesh correctly with teh Ford tranny gear and will over time chew it up.

So in short..speedcal or change out the tranny drive gear toa 6 and use the black 20 drive gear and it will totally correct.

 

You are thee most helpful person ever.

 

Happy to help.

 

Disregard my post -already been answered !

 

Nope speedcal's don't work with our cars. You have to change out the speedo gear which is easy but you also have to change out the tail gear also which is a PITA

 

incorrect it does due to your dash. It is right in thier instructions to tap into the VSS harness and on the late '94- '98 mustangs look for the pink/orange wire ( click the link and look at step 11).

american muuscle also sells the speedcal for '94-'04 manual and auto stangs

http://www.americanmuscle.com/speed-...tor-94-04.html

 

Go ahead and waste your money. Our cars ('94-'95) speedometers aren't electronically controlled, they are controlled by a cable and gears. So I don't see how that will change your speedo, like it would with '96-up

 

Quote:

"
Ford Mustang VSS Background Information

1994-1998 Mustang speedometers, odometers and PCMs expect a Vehicle Speed Sensor signal with a rate of 8000 pulses per mile. Changes in tire diameter and/or differential gear ratio will cause this signal to become inaccurate. The speedometer drive gear on the transmission tail shaft and the speedometer driven gear on the VSS sensor can be changed to try to compensate for these changes. An electronic Speedcal-style unit can also be used between the VSS and the car electronics to compensate for the drivetrain changes. "


Taken from
http://www.accutach.com/Pages/FordVSSCalculator.aspx

 

Not arguing, go ahead and try it

 

When your wrong just remember, I've changed out my gears on my '95 Cobra and the only way I've gotten my speedo correct was by changing my two speedo gears

 

kinda sounded like you where and again you are wrong! this what i have been trying to state about the VSS . All Mustangs from 94 on have an electronic speedo. On the 94 -98 cars the sensor pickoff is the same as in a 93 T5 which has a cable and a VSS, but the cable port is plugged and only the VSS is used to sense speed. The signal is sent to the speedo and the PCM. In 99 Ford deleted the drive/driven gear setup on the VSS and it now goes only to the PCM. The PCM communicates to the dash via a serial bus which transmitts all gauge information from the PCM.

here is some speedo info:

http://www.cjponyparts.com/tech-spee...-cables/a/156/

 

okay.

 

Have you done this mod?

 

Cause it's sounding like your just going off of Internet searches and we all know those couldn't have wrong information

 

Very true in certain cases. So lets step back since my goal is not to really get into a pissing match with other members and I'd rather apologize for my tone we all have the right to post our thoughts! you gave info, i gave info. he can call to verify there is no harm that, if it doesn't work then like I stated he has option number 2 to change the driven/drive gear.

 

True true, sorry about my tone too

 

 

Wow- just read this post, calm down fellas, we're all friends here! Haha.
Skunk is correct about this fella- people are usually misinformed about the electric/cable driven speedo operation, most people only think its not untill 99+ mustangs that electric style speedometer is used... Not the case. The 94-98 style use the drive/driven gear as a sample rate to send an electrical signal to the instrument cluster- the 99 and up do away with the gears and use a frequency ( a magnet passing a tone ring) in the transmission to send a signal to the PCM/IC. I am somewhat a newer member here, and from what I've read Skunk- you know your stuff dude! A wealth of knowledge to the Fox Body guys!

 

Thanks Hoss408, I tried posting info that would prove my point ( the accusation of interweb searching, but how do I prove what I believe to be true ) If I am wrong I'm the 1st to eat a slice of humble pie and correct myself and even learn myself. I already know about/how to deal with the driven/drive gear and I remembered a few years back reading about the speedcal so i wanted to post that has an option was all. It is all good.McNassty was stressing what he believed I did the same, I wish I didn't get "harsh" with my wording. not a style I like to get into.