Mechanics

GEARS CHANGE VICIOUSLY FROM 1ST TO 2ND AND TO 3RD. THEN WON'T CHANGE TO 4TH JUST REVS UP TO 4.5 THEN CHANGES SOME TIMES TO 4TH.

1994 Mazda 929 • 50,000 miles

Few years ago the alternater blew up when in for a service. We replaced it with a generic alternater. Could the computer be playing with the gears because of the generic alternater.
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June
January 1, 2012.



If the charging rate is inconistent or low, it can cause the problem.

Have you tried to check for troubel codes?
Is the MIL indicating?

KHLow2008
Jan 1, 2012.