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

Asked by Mar 22, 2015 at 06:08 PM about the Lexus RX 300

Question type: Maintenance & Repair

4 Answers

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?

261,935

Clean the MAF? Lot of how too's on youtube.

1 of 1 people found this helpful.

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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