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Overdrive issues with 91 740 NA AT

723 views 1 reply 2 participants last post by  PWRPUFF 
#1 ·
I have a 91 740 NA automatic and I have some issues with the overdrive. Sometimes (75% of the time), after starting the car, the little orange arrow will stay lit in the dummy light section of my dashboard indicating the car is in the overdrive mode. (I am not sure it's called overdrive: it may be something else.) This is the same indicator lighting up when the button on the shifter knob is used. Sometimes it takes a few minutes and the arrow goes away. Other times it will stay on. It does NOT go away if I try turningit off using the button. Here is the annoying part: the transmission will actiually keep in that mode getting up to very high RPMs and not downshifting. I am wasting lots of gas and probably overheating and stressing the engine. Has anyone heard of this issue? What's the fix?
 
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