I have a 1999 Toyota Avalon with 130,000 mi. Car has had regular maintenance. When I drive the car at 60 mph or over for longer than 20 minutes, and then I must slow down for an exit or to a traffic stop, the car seems as if it is going to stall at the slower speed and really seems like it will stall out at a stop sign at the exit ramp. If I park the car for 20-30 minutes then re-start, the car is fine. It only does this at 60 mph. I have had the car to the Toyota Dealership three times and they can not find anything wrong with the car. They did clean some injector system the last time on a guess. This has not stopped the problem. I try to avoid driving on the super highways but I live in a metro area- not always easy and adds a lot of extra time to my work commute. I would appreciate suggestions for a repair. Thanks

Asked by Dec 31, 2014 at 10:05 AM about the 1999 Toyota Avalon 4 Dr XL Sedan

Question type: Maintenance & Repair

2 Answers

27,985

Start with cleaning some sensors - MAF, O2, temp, etc. It may be your cars computer is hunting for the right air-fuel mix and not getting it right because of dirty sensors. The IAC (intake air control valve) allows the engine to breath when at idle or when your foot is off the gas pedal, it may need replacing. Hopefully you don't have a fuel delivery problem, you could perform a fuel pump pressure test and/or fuel injection pump test, Harbor Freight has some cheap tools if you want to DIY. It can't hurt to replace an old fuel filter too, if it's been a while.

2 of 2 people found this helpful.

Thank you, Ken. I will follow up with my mechanic on these suggestions. I have the oil and filter replaced every 3000 miles so the filter can't be too dirty but the other suggestions are very worth exploring. Thanks

Your Answer

Avalon

Looking for a Used Avalon in your area?

CarGurus has 16,392 nationwide Avalon listings starting at $1,890.

ZIP:

Toyota Avalon Experts

  • #1
    Tom Demyan
    Reputation
    1,860
  • #2
    lilfrosty357
    Reputation
    940
  • #3
    dandyoun
    Reputation
    690
View All

Related Models For Sale

Used Toyota Camry
932 Great Deals out of 90,023 listings starting at $300
Used Honda Accord
1,085 Great Deals out of 65,750 listings starting at $561
Used Nissan Maxima
304 Great Deals out of 22,129 listings starting at $1,200
Used Toyota Corolla
863 Great Deals out of 59,927 listings starting at $850
Used Toyota RAV4
753 Great Deals out of 50,533 listings starting at $1,195
Used Chevrolet Impala
541 Great Deals out of 34,840 listings starting at $990
Used Nissan Altima
1,078 Great Deals out of 78,359 listings starting at $1,500
Used Toyota 4Runner
311 Great Deals out of 25,189 listings starting at $1,750
Used Honda Civic
691 Great Deals out of 64,146 listings starting at $999
Used Hyundai Sonata
779 Great Deals out of 54,560 listings starting at $1,500

Used Cars For Sale

2018 Toyota Avalon For Sale
9,079 listings starting at $29,065
2017 Toyota Avalon For Sale
11 Great Deals out of 855 listings starting at $20,994
2016 Toyota Avalon For Sale
21 Great Deals out of 731 listings starting at $14,991
2015 Toyota Avalon For Sale
31 Great Deals out of 800 listings starting at $13,650
2014 Toyota Avalon For Sale
57 Great Deals out of 1,230 listings starting at $12,299

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.