first the jeep lost the blinkers to the left so replace the handle and that didn't work so replace the flasher and that fix the problem...right after that I was driving it and stop for a soda and came back out the engine light was on...started to drive it and on the highway up to speed and it start to shake bad.....got it home put the OBD tester on it and it show PO304 code...so we replaced all the things that the sparkplugs are hook to and put a fuel injection cleaner in it and drove it yesterday light comes on again and still shake when speed gets up in the 60's so could anyone tell us what seems to be wrong and what can be done
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