I was on the interstate yesterday with cruise control on, I was going up a steep hill and my engine revved up to about 4000 rpm with cruise control on. All of a sudden my cruise control light started flashing and I stopped accelerating. I hit the gas and was still getting power, but my speedometer, odometer, and trip odometer stopped working. Now when I start the car my overdrive light flashes for about 10-15 seconds. Any ideas what this could be? The car is still driving fine.
Yes the transmission speed sensor has most likely failed, to confirm this have a trouble code test run
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Yesterday my Buick Century Special (2002) suddenly accelerated on the interstate (while going up a steep hill). The cruise control was not turned on and only hard, hard braking and putting the car into neutral and then turning off the ignition got it stopped before topping the hill and going down the other side. I had it towed home and the tow truck driver opened up the hood and said both throttle cables seemed to be working fine. He disconnected the cruise control. I am afraid to drive it again. 165,000 miles. Please advise. Thank you.
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