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Transmission Problem?

(1999 Ford Taurus)
in Arlington, TX on October 08, 2010
After I drive the car for a half hour it feels like the gears aren't shifting when I come to a stop or a light. The RPM's go to 5 or 6. A green sensor light came on today located under the RPM's. It said O or D and the car barely went 10MPH.
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on October 08, 2010
Yes; sadly you are having transmission issues. The green O/D light came on indicating an internal transmission fault that has been detected by the powertrain's computer. There will be some failure codes that can be pulled and will give you some clues as to what is going on. There could be an electrical issue with a solenoid or sensor, but more likely, there is a valve body issue or a hard part failure internally. Have you checked the fluid on the dipstick? Is it red or brown? Brown is an indicator of overheating, which in turn shows signs of part damage typically. Is it full or low? Low fluid can cause shifting problems as well...but when it gets to the stage that your car appears to be's probably too late. Good luck.
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