Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
Hi Im David, thanks for visiting the site. Allow me to look up that information for you. thanks
First of all yes, the thermostat needs to be replaced. 20 minutes is too long to come up to operating temp. as far as the p0300 code, it doesnt necessarily mean the plugs and all coil packs need replaced. do not let them replace all of the coil packs. they arent all going to be bad. that would be very expensive.... have them diagnose which coil pack might be causing the misfire. it may not even be a coil pack or the plugs. it could be a fuel injector. they need to troubleshoot this properly and not just throw parts at it while spending your money.