Join Date: Jun 2015
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You say you have pulled the codes and they indicate random misfiring cylinders. I'm not a Toyota tech, but if you have a misfire code from a broken valve spring, it should ALWAYS be for the same cylinder, not random...unless there is some other secondary effect I don't understand. There is a misfire code for each cylinder which identifies which cylinder is misfiring. If it's a broken valve spring, then your misfire code should remain constant and identify the cylinder. There may be other collateral codes that result from the misfire.
I will give you a little more history on it. About 3 weeks ago is when it gave me problems with all the symptoms I described above. I had the codes pulled P0302, and the lean codes on bank1 and bank2. I swapped cylinder 2 coil with cylinder 1 coil and disconnected the battery. Everything was fine for about 1200 miles. Then I had the exact same problems, so I had the codes pulled again to see if the misfire moved. That is when it showed P0300, P0301, P0302 and the lean codes for bank1 and bank2. So that's when I took it to the dealer.
Sorry about the confusion in my first post. Right now it is running perfectly fine. So that is why I don't understand how it could be a broken valve spring.
2014 1794 CM, Bilstein 6112's top setting, 1 CB shim per side, 5160's rear with +3 CB shackles, Zone upper control arms, 1.25 Bora wheel spacers, Stock wheels, Nitto Ridge Grapplers 295/60/20, AMP Research steps.