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2004 Lexus GX 470 Base 4dr SUV 4WD

2004 Lexus GX 470
Trim Info:
Four Wheel Drive, 4-Door SUV, 4WD Sport Utility Vehicle
15 mpg city / 19 mpg hwy
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December 8, 2012, 9:32 am

Rob A
 

Question: we have a 2004 470 with over 100,000 miles. we have a chemical smell, a small leak and, rough engine

can you tell us what this might be caused by.


December 14, 2012, 10:48 am

Elizabeth K
Expert Mechanic

Having it scanned for codes would help determine if there is a problem with the emissions system, and at your mileage, you're due for a 100k tune-up/maintenance service that should cover a lot of diagnostic ground for the issues you're having, including replacing fuel/air filters, checking EGR system and cleaning the IAC (idle air control) valve, throttle body and MAF (mass air flow) sensor.


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