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 k123warren Dec 31, 2014 at 10:05 AM about the 1999 Toyota Avalon 4 Dr XL Sedan

Question type: Maintenance & Repair

2 Answers

103,225

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 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 2,069 nationwide Avalon listings starting at $1,999.

ZIP:

Own this car?

Share your experience with others.

1999 Toyota Avalon

Review another car

CarGurus Experts

  • #1
    Farmboy93
    Reputation
    2,410
  • #2
    MsAngie1968
    Reputation
    1,340
  • #3
    GuruDCW7P
    Reputation
    1,130
View All

Know more, shop wisely

Search

Related Models For Sale

Used Toyota Camry
2,045 Great Deals out of 44,008 listings starting at $800
Used Lexus ES
407 Great Deals out of 7,135 listings starting at $2,500
Used Honda Accord
1,523 Great Deals out of 30,178 listings starting at $1,200
Used Toyota Corolla
1,379 Great Deals out of 27,821 listings starting at $499
Used Toyota RAV4
1,967 Great Deals out of 34,310 listings starting at $1,500
Used Lexus LS
121 Great Deals out of 1,514 listings starting at $4,491
Used Toyota 4Runner
1,002 Great Deals out of 10,536 listings starting at $2,995
Used Lexus GS
78 Great Deals out of 947 listings starting at $2,800
Used Honda Civic
1,266 Great Deals out of 26,187 listings starting at $1,395
Used Lexus RX
835 Great Deals out of 12,923 listings starting at $2,350
Used Toyota Tacoma
2,138 Great Deals out of 56,037 listings starting at $3,995
Used Toyota Tundra
1,021 Great Deals out of 31,587 listings starting at $2,999

Used Cars for Sale

2022 Toyota Avalon For Sale
15 Great Deals out of 194 listings starting at $19,900
2021 Toyota Avalon For Sale
15 Great Deals out of 126 listings starting at $16,700
2020 Toyota Avalon For Sale
6 Great Deals out of 91 listings starting at $19,649
2019 Toyota Avalon For Sale
17 Great Deals out of 204 listings starting at $16,208
2018 Toyota Avalon For Sale
3 Great Deals out of 103 listings starting at $9,995

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. Content will be removed if CarGurus becomes aware that it violates our policies.