Fixing speedometer mazda 121 the speedo is out becouse it has 13 inch rims on it i need a cog with 22 tpi to fix it where can i get one

manual , speedo connection at box not properly connected
auto-- VSS wires not connected

Mazda 121 2-2 - Scribd

https://www.scribd.com/doc/34263197/Mazda-121-2-2Jul 13, 2010 - Mazda 121 2-2 - Free ebook download as PDF File (.pdf), Text file (.txt) or read book online for free. Workshop Manual Volume2 of 2 ...
images for heat sensor location

screws onto gearbox,clips onto speedo,big rubber grommet holds it to firewall

besides the rim size you will need the profile of the tyres to get the circumference and the diff ratio even it is what you call a standard diff.. Holden has at least 3 cog ratios that are used to correct the speedo readings but unfortunately they only cover standard tyre profile Try speed shops to see if there are and other cogs available and another suggestion is to find a speed shop with a chassis dyno that can fit the cogs and test the readings without going on the road all the time .

This is a classic symptom of a bad speedometer cable. Replace that cable.

Make sure the rims are the correct bot pattern (4 X 98) and hubcentric. As for tire size, goin from a 13 to 14 inch rim is called plus one. The key is tio maintian the same tire diameter so the gear ratio and speedometer arenlt affected.

A stock 13 take a 195SR- 13 tire, wirth the 'SR' being a 75 series tire with a diameter of 24.52 inches. The closest match in 14 inch tires is 215x60-14 with a diamter of 24.16. As close as possible match.

That would as much tire as youi wouls ever need.

okay,lets go to basics...1/.175 is the width of the tyre.2/.70 is the profile(that is 70mm from the wheel rim to the road).3/.13 is the width of the wheel rim.
So,you have 185(wider tread)60 (lower profile)14"(bigger wheels).you need to fit 35 profile tyres to get close to the same rolling radius to correct the speedo,the ride will be harder and the tyres are much more expensive,alternatively fit 13" wheels/tyres.
70/13 radius is the same circumferance as 45/14(25mm thinner).
simply put,if you measure the original wheel, road to top of tyre,then measure the ones fitted you are an inch to tall or 3.1/2" more around (approximately)please leave feedback...ta
geoff.

The shop failed to hook up your speedo cable. Or they broke it while installing. Either way..their fault.

Speed sensor located on top of rear axel dead center Kills both the cruise and the speedomoter. Easy fix.

faulty connection on transmission a or sometimes nylon cog worn and failing to spin inside transmission its easy to replace just unscrew speedo cable and with pliers pull out nylon cog and replace