My money is on the modulator. Just check that the vacuum line going to the mod actually has full vacuum (I suggest use a vacuum gauge) at idle, before replacing it.
Quote:
Originally Posted by maxwedge
My 350 in a street rod has kick down linkage that can alter shift patterns.
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I had to look this up in my transmission rebuild manual. The THM 350's cable performs a more limited function than the TV cables in the 4 speed automatics. The manual refers to it as a kick-down cable, not a TV cable as such.... but as you say, if its out of whack the shift points will be incorrect.