And there is not any codes or light. Coolant levels are good. Could the engine dying just be a safety thing since i was unplugging one at a time maybe the computers thought something was wrong so it shut off.

 

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$60 for a cap and rotor? Holy Crap! Where were you shopping for them? That is nuts!

 

small town auto part store. He is normally pretty close in prices but for some reason it was way over priced. Went on rock auto and got everything cap rotor and wires for 30

 

Rough idle in my 91 xj was throttle position sensor, 10 min job unless hex screws are frozen, make sure you have a quality T20 hex bit.

 

You can do the power balance with a test light to ground out each spark on cap. The past two vehicles I've worked on this week both ran like crap both injector problems. One jeep number 6 the other a chevy 4.3 with 1,3,5 all dead cylinder but still run. Noid light will or even the test light will help you in seeing if your getting a pulse to that injector and check resistance in the injectors with a multimeter.