have no clue what hes talking about.help???

**94formulaLT1** · 04-02-2006, 11:42 AM

Alright im talking to this guy about a car and he is telling me that the "speedo is unhooked needs new gear". ill be honest i have no idea what hes talking about which is why i dont know where to post this question either. so someone please help and tell me what that means. and is it something easy and cheap to fix or exactly opposite. thanks

**Orcus79** · 04-02-2006, 01:12 PM

I think he is talking about the speedo drive grear gear in the transmision. It a quick and easy fix. I'm guessisng that this is an older car as I think that they went to speed sensors fully in the early 90's late 80s. If you are refering to your handle than it will be a sensor and not a gear. It its not that than chances are your speedo servo has lost power or is totaly dead.

**RainMan** · 04-02-2006, 01:16 PM

Originally Posted by 94formulaLT1

Alright I'm talking to this guy about a car and he is telling me that the "speedo is unhooked needs new gear". ill be honest i have no idea what hes talking about which is why i don't know where to post this question either. so someone please help and tell me what that means. and is it something easy and cheap to fix or exactly opposite. thanks

I would assume he is referring to the speedometer drive gear usually located in the tail shaft* of the transmission. There are usually two, a drive gear attached to the output shaft and a driven gear that connects to the speedo cable housing. Of course it all depends on what vehicle you were talking about as to where the drive gear is or if it even has one.

*Rear wheel drive

700R4 Example: http://www.transmissioncenter.net/sp...n_______va.htm

T56 Mechanical Speedo Drive Mod Kit:
http://www.jagsthatrun.com/Pages/Par...pp6-3_6-4.html

Front Wheel drive have a different configuration. Usually on one of the output shaft housings of the trans-axle. Almost all Modern (Last Few Years) vehicles now use electronic Speed Sensors or transducers of some sort to drive the Speedo.

This Thread would be best in the Drivetrain Forum

**94formulaLT1** · 04-02-2006, 10:02 PM

ya the car is an 88 mustang gt 5.0. it has all kinds of mods and runs fine im guessing cause they guy is willing to drive it down from chicago for me.