code p0300 ( random/multiple cylinder misfire detected) the car runs great while driving, but when you are going slow or ideling the motor wants to quit some times. sould this be the plugs and wires need to be replaced since it has a new opti-spark on it. can the3 plugs and wires be replaced eaisly from underneath or do i have to bring it to the shop. thank you for your advice. jim

 

yes it probably is the plugs and wires, if it still misses it could be the opti, the plugs and wires are a pain to put in but once you do it a few times its gets easier, but if you can afford it take it to a shop it will be a lot less painful

 

alih, thank you very much for your advice.

jim