Speedometer problems
09-05-2008, 08:40 PM
#1
4th Gear Member
Thread Starter
Join Date: May 2006
Location: Pennsylvania
Posts: 1,597
Speedometer problems
When i bought my car (1986 mustang gt 5.0 5spd) it had a 16 tooth gear in it, it wasnt even close to being accurate so my dad bought me the speedo gear kit with the 17,18,20,21 gear set, ive installed all of the gears and none of them have been accurate the closest one was still off by 20mph high and that gear was the 18 tooth gear. im stumped i looked at the charts, i dont have the ability right now to pull the rear apart and count the teeth, due to work school and other problems. is it possible my gauge cluster is just bad? or could the cable be shot?
09-05-2008, 09:15 PM
#5
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
yeah!! but you don't wann hear the answer to that one!!! lol, use my known good one
if the problem still persists with my known good one the issue is either on the gear on the output shaft or cable, but I doubt the cable is bad
if the problem still persists with my known good one the issue is either on the gear on the output shaft or cable, but I doubt the cable is bad
09-07-2008, 07:09 AM
#10
SVT Section Moderator
Join Date: Jul 2008
Location: Burnt Hills, NY
Posts: 15,601
Jack the car up, spin the tire ONE complete revolution & count how many times the drive shaft spins and you have youre rear gear ratio....make sure to put a couple of jacks stands under....you might have some low gears in there!