Out West Posted December 16, 2013 Share Posted December 16, 2013 70mph on the freeway when the engine started to missfire, exited and drove at 35 mph 2 miles home. motor starts and idles,when i put the code reader on i got PO301 and PO302. what would cause a missfire like that? faulty coil pack, something going to ground? Quote Link to comment Share on other sites More sharing options...
johnceggleston Posted December 16, 2013 Share Posted December 16, 2013 (edited) #1 & 2 are on the same coil, the front half. #3 & 4 are on the rear half. so that might be it. the igniter, which feeds the coil, also operates front and rear like the coil so it could be that as well. i don't know which is more expensive? but used might be a good solution. they do not have a huge failure rate. Edited December 16, 2013 by johnceggleston Quote Link to comment Share on other sites More sharing options...
Out West Posted December 16, 2013 Author Share Posted December 16, 2013 Thank you John,gonna hit the pick&pull yard for a used coil pack. Quote Link to comment Share on other sites More sharing options...
johnceggleston Posted December 17, 2013 Share Posted December 17, 2013 get the igniter too. it is on the firewall right next to the trans dog bone . follow the wires back. Quote Link to comment Share on other sites More sharing options...
Fairtax4me Posted December 17, 2013 Share Posted December 17, 2013 How old are plugs and wires? Quote Link to comment Share on other sites More sharing options...
branbikenut1 Posted December 19, 2013 Share Posted December 19, 2013 Ive been having that same issue with my 99 legacy SUS. I changed the coil, ignitor, plugs and wires. Th issue for me end up being the oil pack. I mixed and matched between my old ones and new ones and thats what i foubd. Hope yours is as simple as mine was Quote Link to comment Share on other sites More sharing options...
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