low MGP high RPM

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just purchased 99 RX300. was slugish on accerlation, changed oil, oil filter, air fliters, idfferential fluids, tranmission fluid. added fuel injection cleaner. that took care of the sluggish acceleration but still has low, 12 MPG average, and high RPM (3000 @ 70 MPH) dealer told me that they replaced the Mass Air Flow Sensor. no check engine light ????

pfsoter in Swisher IA

Feb 25, 2011

What are the best Lexus repair shops?

RepairPal Certified shops can diagnose and repair your 1999 Lexus RX300. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

low MGP high RPM

What is your question?

pfsoter in Swisher IA

Feb 25, 2011

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What are the best Lexus repair shops?

RepairPal Certified shops can diagnose and repair your 1999 Lexus RX300. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.