Ask a Car Question, Get an Answer ASAP!
Hi. As far as I am aware it's a generic random missfire code
Hi..there..Normally with that type of code P0300 id be checking for underlying cause is in regards ***** ***** lean fuel condition, which of course may be due to a vacuum leak / intake manifold gasket leak ie:- unmetered air getting past the airflow sensor this could of been upsetting the fueling oxygen sensors may of been trying compensate for that and may not of been faulty,best why to diagnose that is to go along the entire intake system/gasket lines hose checks etc by spraying with carb cleaner/brake cleaner.to see if the engine rpm stumbles or runs faster as it drags the carb/brake cleaner in.then that will be your issue - as far as coils go according to my info it does seem to be a distributer on the 2.5 V6 you may actually notice it yourself if you follow your HT leads back to the side of the cylinder head..if you see the distributer cap then thats what you have..so that would be another area to check the cap condition,contacts inside/rotor etc ... 3 coils? again it doesnt seems to list that engine with them but check all the same - but to be honest i couldnt see all 3 coils if had them going faulty at the same time unless its was ECU issue which drives the coils/earth issue burning them out....so as above there are few others things to maybe try or if you think the garage concerned are just replacing parts on guess work at your expense..then it maybe time to seek another opinion/garage... maybe try this site for anyone local to you ... i do hope this helpshttp://www.goodgaragescheme.com/