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Question
My check engine light has been on even after I paid huge$$$ for the mechanic to fix and run through emissions checkpoint. The 2000 Toyota Corolla is recently misfiring with a PO 300 code. I'm due for emissions check soon, too. My priority is the misfire. What do you think, Sean?
Multiple misfires could be plugs or wires.You will need to have the problem looked at by a good tech.It is also possibly the ignition module but that can only be diagnosed by a mechanic.There are some procedures to go through before putting new parts in the engine.
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| Rating(1-10) | Knowledgeability = 10 | Clarity of Response = 10 | Politeness = 10 |
| Comment | Well that makes sense to me. I was thinking of just using fuel additive or having someone change plugs. | ||
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Answers by Expert:
Sean Halliday
Expertise
general auto repair,japanese,bmw,mercedes,mini cooper 1960/2009,general british cars,ford.I DO NOT work on automatic transmissions.Manual transissions i install clutches only.Many people ask me to diagnose noises from their cars,unfortunately i cannot do this unless i hear it.As you appreciate,vehicles can and will make a variety of noises.I DONT UPGRADE or fit aftermarket performace kits,parts,chips,only replacement parts.
Experience
40 years experience on all general auto repair.
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