95 tracker miss after warm up

[fixkick]

ok new wires have been installed.
have been trouble shooting all day on and off as not to get hauled to mental asylum.
re gapped plugs to 28 to see if that helped... same..
hooked up timing light and mark appeared to drop back to set timing when intermittent missing happens.
Installed timing lock jumper and repeated test with painted timing mark for better visualization... same results missing happens when timing returns to zero as it revs. the lock wire does not hold the timing as it revs
so is this an emc problem or a cps ... to me it sounds like ecm
.

the timing freeze only works under very strict rules.

1. Hot engine and 800 RPM
   
2. TPS idle  switch closed at 0vdc (TPS calibration makes that happen)
   
3. not in limphome mode. CEL flashes 12 's on demand.
   
4. if you advance the throttle,  the freeze ends due to rule 2 failure.
   
5. and my huge list here of fails. all that I can ever imagine. (fast idle active, ext)  < ignore 8valve reasons. like DP there. and ignore 89/90 three too.
   

hot engine test,
engine hot, idle 800 rpm,   turn on head lamps and dash blower fan to high same time, see 800 HOLDs, this proves, #2 and ISC is working and regulating, but doing this test see the 800 sag bit fast and react and recover to 800 this is ISC doing its  job regulation HOT IDLE.


Misfire: (one of the 3)  Besides Limphome mode that goes super rich and misfires. not code 12.

• Bad spark (includes timing)
  
• bad injector (too lean , too rich or just fails to inject ,even randomly sticking injectors)  
  
• bad compression (or oil or antifreeze fouling is any combustion chamber)
  

we have folks that put in new spark wires
and are bad new out of  the box
for sure cheap wires, made from carbon core or silicon core.
some are so cheap the core crimps in the terminals, can be seen to be faulty as in china made $15 wire sets. (NGK or Bosch MAG wire sets are prime)
bad spark coil
bad grounds to the whole spark system parts.


Not sure this. statement yours.
"drop back to set timing when intermittent missing happens"., that is misfire , bad spark. if the timing lamp goes dead
on any spark wire running, that is misfire, spark
if all 4 wires do that the spark coil is bad, if one wire only does that , that wire is bad or cap /rotor problems in distributor.
not sure this effect, Id have to see it.

at hot idle this car has normal timing bounce this is what EFI does normally it move timing aggressively as only EFI can, and does to burn all the fuel, at idle
no 89/90 can do that, as it has no EFI spark at all and is old slow mechanical advance.
the bounce is 100% normal and is why the FREEZE jumper exists ,the only reason, for it. to set spark static timing.-

uses the timing light on all cylinders,  1 by 1. make sure the light does not miss a beat for sure if you hear misfire.  not flash flash mis, flash ,repeat.

that is all I can think about now and here, good luck to you!!!