When I start driving and the trans goes to shift my
rpms go up to about 3 or 4 thousand acts like it
don't won't to shift .if I let off the gas it will shift .
And then the o/Do light starts flashing .Amy ideas
O/D light flashing means there is a transmission fault code stored in the cars system. Since your having shift issues, have a local trans shop or mechanic scan the codes and perform a diagnosis. Before that I would check the fluid level to see it is at the appropriate level. Make sure the engine is warm, on a level surface, and engine running.
How many miles on the Explorer? History of fluid/filter changes?
Probably needs the transmission rebuilt or replaced. As Tom suggested have it checked out.
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