Originally Posted by anthony420

I have a 98 ford ranger, v6 4liter. Runs great, just replaced the engine. However, i am noticing a problem after i get over 50 miles an hour, my od light starts flashing, then i notice a hard shift from 2nd-1st and 1st to 2nd. If i turn my truck off, and then back on, the flashing is gone and my truck shifts normally. After i get back up to speed , around 50 mph, light starts flashing again and shifting symptoms re appear. It drives normal thought out all other gears, no issues on highways, no excessive rpm's, noises ect.... pushing the od button acts normal, rpm goes up wen i disconnect over drive and when i re engage over drive, rpm goes back down. Any ideals on this issue??