2000 Toyota Tundra Q&A

2000 Toyota Tundra Question: rough engine idle

codes 300, 303, 306 . where do i start ? -
Answer 1
I bet you do have a rough running engine. You could have bad coils or plugs or both. You clearly have a problem with number 3 and 6 cylinder. To save a lot of agravation just replace all the coils and plus. They are double plat plugs. -