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Old 05-30-2008, 09:17 AM   #1
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Help! Is it a transmission problem?

2001 Focus Automatic.

The problems are:

In the first few minutes after I start the car,

1) Using D, I can only reach 15 km/h,( D2 is ok, read 30-40 km/h), it seems that transmission does not work.

2) speedometer does not work(point zero)

3) Automatic lock does not work either. Usually it should lock a few seconds after when I start to drive forward.

The strange thing is : After driving for a few minutes,the autolock and speedometer suddenly come to normal at the same time, and at the same time transmission come to normal(but at the speed 20km/h I can still feel a little bit jerk). This happen several times.

Some mechanics said it is a transmission problem, while one of them suspect it may be speed sensor break. Could you help me analyze this case? Is it problem for the sensor to affect the transmission?

Thank you very much!

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Old 05-30-2008, 11:46 AM   #2
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i would think speed sensor personally.

because the automatic locks close when you reach a certain speed.

the speed sensor drives the speedometer of course.

AND the speed sensor is used to determine when to shift.

so IMO thats whats wrong, altho i am not a certified mechanic.
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