Thanks for all the replies. I had 2 other vehicles that had the same problem. It was always the modulator. The first was a 1959 Rambler Rebel wagon. Had to several shops and first said it needed the oil changed. It never helped. The Rambler shop said it was shifting normal and I told him it never took that long before. The owner of the Rambler had a son that taught auto shop at the local community college and I knew he was a first class mechanic. He also raced Nash cars back in the late 1940's and 1950's on dirt tracks. The Fords always out ran the Nash. I ask him about the late upshifting. He said it was the modulator. The same mechanic that told me it shifting normal replaced the modulator. That fixed the problem. The other vehicle was a 1979 Chevy P/U. I found the vacuum line needed replacing to the modulator. I was a lot younger back then, when you're approaching 80 I don't like crawling around on that creeper. Hal
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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