So i've changed 3 out of 6 coils, i've change #2 and #6 cause of oil issues, which i've replaced the valve covers as well, i've also changed #1 coils, bought all new spark plugs, irridium xl, and theres STILL a hesitation when i'm idle and especially when i turn on the A/C, when i went to put it on the computer it gave a code of P0300 which is a random misfire code, which really doesnt give me any pin point cause as to why its jurking and hesitating...has anyone had this issue or may know what the cause might be??


my one mechanic said that the 3 coils i bought were not oem coils, they were aftermarket, so should i get the 3 coils oem which are the HITACHI brand coils?...will that fix my problem?...please help

 

Oem coil packs are very important. Aftermarket coils could send out the wrong voltage signal. Ive seen a aftermarket coil blow right after installation, then replaced with a OEM coil and car ran fine after.

 

Yup that was the problem!, the new coils fixed the issue, i'm sooo happy, its my daily so its kind of important to keep this car running on the road...thanks Dom for your input, very helpful forum!