Q: Q: Transmission problem?

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When it rains the engine reduces power then won't start

My car has 107407 miles.
My car has an automatic transmission.

Hi There, Unfortunately, there are many things that can cause the vehicle to go into what is called a "safe mode" which is what sounds like your car is doing. You may have a transmission speed sensor that is wet or faulty due to the rain resulting in the reduced power as you describe. The transmission speed sensor reads the rotational speed of the reluctor wheel, located within the transmission. The speed sensor also controls the anti-lock braking system. Driving with a bad speed sensor usually causes the ABS to malfunction and can lead to loss of braking power and/or an accident. When this is not working properly, you may also notice the transmission hesitating to shift gears, erratic tachometer readings, the speedometer not working properly or the odometer not working properly. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

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