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the coil and the ignition module is all you replaced?
yes that is all
lets do something simple here
tune it up
new plugs,wires rotor and distributer cap
That was done a month ago, new plugs wires cap rotor,
lets try..replaceing the cap and rotor again
Timing belt was replaced 3 monts ago
these will burn up rotors
does the engine get hot?
Is that what cost the engine light to go on. Engie running perfect the in 5 minutes all these issues
the miss fire you have..is what maks the light come on...becuse it is running poorly
OK ill look at the cap and rotor,
has the engine ever been really hot?
are you there?
I just took the cap off
It looks very rough for being just replaced lots of white on the terminals and rotor is looking like it is it is ragid
lets replace that again
The engine was hotter than usual before I shut it down.
ok...do you ever need to add coolant?
No the coolent is right up and so is the oil no change in levels.
lets replace the cap and rotor
another think that may have happened here,,is the timing belt may have jumped a notch,,,sense we dont know if the mechanic had the tensionor tight on the belt,[this is just a thought]so,,the next thing you may want to do,,is to check the timing
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took it all apart and the time is ok, getting a cap and rotor tomorrow.
Your where wrong with the ignition, The issue was the ecu, these models from 89-94 use a capacitor that leaks. The ecu can be rebuilt or exchanged or new one purchased. opposite to what is generally felt these can gradually fail.