i have a 1989 mazda MPV it has 213000 miles on it, the vehicle was runing fine never had major work (except lifters). this past summer i started feeling the rpm needle surge up and down after the car hit 45 mph and up ,i took it to a mechanic changed the tranny and same problem ,he even put my tranny in another mpv and it worked fine, he had it for 2 months trying to figure it out , so he sent it to the dealer they said the car is showing no codes, and they said the tranny was fine , so he took it to the electrical guy and we changed the harnest still same problem. can anyone please give me some info ,i love this van....
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