down shifts by it's self.? It shifts down and then back in gear when traveling between 45 and 65 mph. on level roads. I believe it to be an electrical problem but I'm not sure.
Does it sound like the park/neutral safety switch or the transmission range sensor?
It seems to be shifting out of over- drive and back in. It will also go into neutral and the engine will rev. The mechanic that rebuilt the tranny said it's electrical and he can't help.
nitroyes, you sound very confident in your reply. I had no intention of trying to repair it myself, until reading your reply.
I'll call a dealer for a price on the part and try replacing it myself. Thank you.