Could a defective Klima relay prevent an otherwise healthy trans from shifting into fourth gear and delay up-shifts in the other gears? If I could get to the bottom of this tranny's funky behavior I might not need to swap in another trans. I'm studying other threads on this topic as we speak and I'm trying different things. TBH, this trans seems too healthy and strong to be replaced. It's as if something (like a defective relay or kickdown switch) is telling it: "don't shift yet".

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89 300E "Benzer1" 15.924 Uncorrected
93 400E "Benzer3" 14.200 U.C.
95 E420 "Benzer4"
92 300E "Benzer5" 16.299 U.C. Future turbo CNG
87 300D "Benzer7"
87 300D "Benzer8"
87 300D "Benzer9"
87 300D/70 AMC Javelin "Sidewinder-Benzer"
87 300TD "Benzer11"
06 E320 CDI "Benzer12"
05 E320 CDI "Benzer12A"
71 AMC Javelin AMX 401 "Sidewinder"
74 AMC Hornet 401 "C.K.10" 13.63 U.C.
74 Bricklin SV1 "Presto" AMC 360 pwrd.