i have 1993 geo metro and when you put it in drive it will not shift on its own . you can start out in low and shift manually and run great but will not shift on its own
That sounds like a problem with the governor. I would let a trans shop look at it. There is a tap in the side of the case where you can check governor pressure. It should read 1 psi for every 1mph. Example: If you are driving 10mph the governor pressure should read 10psi. 15mph = 15psi. If you are reading 0 psi at the tap at any speed, the governor is bad or stuck.
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