my 1999 RX300 sputters bad, the code pulled pa300. The plugs and coilpacks are newwithin the last 6 months, have gone theough 2 tanks of super gas and gas treatment, sputter comes and goes. What else
P0300 is random misfire, a vague DTC. You are wasting money on Premium gas and treatments unless you have water in tank. Is the CEL on?
Clean the MAF? Lot of how too's on youtube.
cel is not on, will try maf
tried new MAF, and air filter. Cleaned throttle body, still sputtering. check engine light comes and goes still 300 codes. Any other ideas?
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