Along with my p0440 and p0100 code problems, I now experience a stutter in my RPM range when cruising around 1500 RPMs. The RPMs will go up and down ever so slightly, and I can hear the engine drop as well. I just had a smoke test done, and found no vacuum leaks. Could a Evap leak cause this? Or a faulty MAF? Please any response would be greatly appreciated.
Car sputters when cruising
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