95 tracker miss after warm up

[1995 toad]

tps was calibrated...
have checked all wires from tps to their other ends
no bad wires.
found white wire from cps has shielding that wasn't connected to a ground on cps end...just laying in looming...grounded
tested wires from cps to coil, ignitor. noise suppressor. and cpu.... all wires checked good
not sure how to check suppressor.
every thing runs good till warm up then the problems start
havent driven it since all this
mounted cpu on kick panel to ease in testing wires to cpu... it is grounded btw.
started and ran fine no codes but didnt have time to drive it or warm it up.


the timing retarding was happening before the tps code showing up
with the code it still drives the same except the same timing jumping to 3* atcd


wish i had a spare cpu to test
would the noise suppressor cause intermittent timing drop

the timing jump is very intermittent and is happening on at lest the front two cylinders witch was all i tested with the timing light.