Good morning or evening to all haha! I have ran into a problem and I know you fine folks can help me out with it. CEL came on about a couple of weeks ago and code read misfire on #1 and #5. Long story short I replaced spark plugs(verified that it is sparking), wires, injectors, ignition coil, crankshaft position sensor and cleaned the MAF, IAC, and throttle body. When I test drive it, it seems to shake around 70mph and any rpm higher than 2000. I'm kinda stuck at this point. I was thinking about changing the camshaft synchronizer but would that do anything for the misfire CEL? 108,000 miles on it.

 

when you change the plugs did the CEL go away? if it's still there what's the code?


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I cleared it and drive around a bit and it popped back up. Code is p301 and p0305. Thank you.

 

didn't fix the issues because the CEL came back.
you sure you didn't cross the wires? 1 and 5 are on the same coil. Or your ignition coil is bad.

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Checked the wire orientation twice and it looks good got 123 on the top and 564 on the bottom of the coil. I installed a new ignition Coil and still received the CEL.