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Grand Am SE

Why does a transmission not shift until the car is fully warm?


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Wiki User
2011-04-29 16:23:24
2011-04-29 16:23:24

because the transmission didn't have IT'S fluid chanded every 25,000 miles.

Answerthe automatic transmission fluid was changed and the solenoids, but it still will not change gears until the car is warm.


Probably a tired/worn front pump.


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Torque converter or the transmission oil pump getting worn or a valve in the transmission is sticking.

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Had problem with 86 Lincoln not shifting properly when cold. I assumed it was because the fluid was thicker and would be more affected by a clogged filter. I had the transmission flushed and the filter cleaned and it worked perfectly from then on.

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Check fluid level with engine warm in park, also check linkage from shifter to transmission casing.

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Have your transmission flushed.($120-140) My 87 Accord did the same thing. Unfortunately, it needed a rebuild a year later. Good luck. Is level low?

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