3504mula

I have read a couple of posts here about kinks in the tv cable causing adjustment problems. Is this true? I have tried adjusting mine (with the kink in it) in every way (the book way, thirdgen.org way, and even over exagerating the adjustment) and it still is messed up. Right now it is shifting at about 3400 in first and 4800+ in second. But the real problem is in between shifts it slips pretty bad and I am afraid I am heating up my transmission and causing damage (it was professionaly rebuilt ~10,000 miles ago). It will tach up just a little before it shifts from 1st and 2nd and even a little into overdrive. Even full throttle shifts are soft. I would really appreciate some help.
Thanks

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1990 Formula 350
Hooker Headers, Random Technology Exhaust w/ no cat, K&N, Airfoil, AFPR, MSD 6A Ignition, Performance Resource chip, Metco LCA's w/ brackets, F Body Perf. Panhard Rod and Strut Tower Brace, A 3.08, open, drum rear end installed by previous owner (good choice), 1999 Formula Wheels, White Face Guage Overlays

transfixleo

Replace the cable and start over with the proper adjustment. This is not an area to scrimp on as this signal is critical to the trannies operation.