You need to have the code read. Go to Autozone and they will read it for free. If I had to guess I would say that your VSS sensor is either giving out or the Pcm is getting bad info from another sensor.
The "check engine light" on a Mazda three is located to the left lower side of the tachometer. It is orange in colour.
The Mazda tachometer and the speedometer have separate cables. The tachometer cable probably does not work properly. Change the tachometer cable.
quite a bit
I found a listing for a 1988 Mazda B2600 ( 2.6 L 4 cylinder engine / 3 speed automatic transmission / 4X4 ) and listings for 1990 through 1993 Mazda B2600I ( 2.6 L 4 cylinder engine / 4 speed automatic transmission / 4X4 )
Engine, not motor... there is a difference. The engine in the 1993 Ford Festiva/Kia Pride/Mazda 121 was the fuel injected 1.3 liter Mazda B3 engine.
Talk to your Mazda dealer but, it sounds like a problem with your automatic transmission and just like a check engine light it may be a number of problems.
One can purchase an automatic Mazda in stores or from the website of the company. However, buying a Mazda in store will let the customers see its specification in a better way.
It depends on whether it is automatic or manual. Between 6 - 8 degrees BTDC should be okay.
yes
Automatic transmission
looking for an engine no on a mazda 1992 121,were is it locoteded on engine
I cannot find a photo on a 1992 Mazda 121 or the 1.3 engine. However I would suspect the firing order & connections would be the same as the 1.8L engine. I will post a link showing the connections on the 1992 1.8 L engine. Try this connection.