My 2001 Toyota Avalon with 260 K on RPM fluctuate frequently and running rich

Asked by Jun 10, 2017 at 03:37 PM about the 2001 Toyota Avalon XLS

Question type: Maintenance & Repair

My 2001 Toyota Avalon with 260 K on it running rich and RPM fluctuate frequently  

My 2001 Toyota Avalon with 260K on it is running too rich. I do not get good mileage. When I start the car in the morning, the RPM goes up 3K and after 3-5 minutes it goes down. It also makes rattling sound at the start. When I drive the car, the RPM fluctuates a lot even if I don’t push on gas paddle.
I changed oil filter, air filter, new Mufler and also change oil on regular basis. Please help me to find out the problem.  I wanna keep it for another 100 K miles. Thanks a lot.

1 Answer


Rattling noise at start? Is it the engine making the noise? Check the belt and accessories? Clan the throttle body? Did you check for vacuum leaks, scan for the codes? O2 Sensors original?

Best Answer Mark helpful

Your Answer

Toyota Avalon Experts

  • #1
    Tom Demyan
  • #2
  • #3
View All

Related Models For Sale

Used Toyota Camry
1,101 Great Deals out of 72,557 listings starting at $1,000
Used Honda Accord
1,046 Great Deals out of 63,027 listings starting at $999
Used Toyota Highlander
466 Great Deals out of 25,346 listings starting at $2,299
Used Toyota Corolla
926 Great Deals out of 66,546 listings starting at $1,000
Used Nissan Maxima
323 Great Deals out of 23,728 listings starting at $1,550
Used Toyota RAV4
904 Great Deals out of 60,574 listings starting at $1,690
Used Nissan Altima
1,121 Great Deals out of 74,981 listings starting at $999
Used Toyota 4Runner
244 Great Deals out of 21,761 listings starting at $1,500
Used Honda Civic
843 Great Deals out of 78,708 listings starting at $888
Used Chevrolet Impala
599 Great Deals out of 34,726 listings starting at $1,250
Used Hyundai Sonata
746 Great Deals out of 47,933 listings starting at $199

Used Cars For Sale

2018 Toyota Avalon For Sale
7,062 listings starting at $28,662
2017 Toyota Avalon For Sale
2,684 listings starting at $25,977
2016 Toyota Avalon For Sale
23 Great Deals out of 853 listings starting at $16,991
2015 Toyota Avalon For Sale
38 Great Deals out of 744 listings starting at $15,795
2014 Toyota Avalon For Sale
57 Great Deals out of 1,291 listings starting at $12,966

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.