1991 Ford Crown Victoria Cold Transmission Wont Upshift Until Warms Works Fine

1991 FORD CROWN VICTORIA
90,000 MILES
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ANONYMOUS
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  • 1 POST
When COLD the transmission wont upshift until it warms up then works fine.
Mar 8, 2013 at 6:41 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
If there is no check engine light and the trans fluid is clean and full, chances are the seals in the valve body are getting hard. Try a shift additive to see if that helps.
Mar 8, 2013 at 6:47 PM
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