When I start my car in morning, I have foot on break and car jerks to go. After that it is fine.

Asked by Apr 21, 2015 at 10:32 AM about the 2003 Hyundai Sonata GLS

Question type: Maintenance & Repair

After car sits over night, or many hours, I turn key, car starts. Tach is at 1000. I put foot on
brake and shift into drive or reverse. Car acts like I have a tiger in the tank and wants to
take off. I manage it by not holding brake down too far. After first start up, it's fine. Live in
high humidity area.  Has two head gaskets replaced about six weeks ago.  This started
about a month ago. Car drives at 10 mph without my placing foot on gas. Any ideas?

3 Answers

105

Clean your butterfly valve on the throttle body. It's probably sticking open.

1 of 1 people found this helpful.
945

throttle senor

1 of 1 people found this helpful.

Thanks, guys. I'll have someone give it a try.

Your Answer

Sonata

Looking for a Used Sonata in your area?

CarGurus has 50,009 nationwide Sonata listings starting at $500.

ZIP:

Hyundai Sonata Experts

  • #1
    toDumbToNotKnow
    Reputation
    1,600
  • #2
    Tom Demyan
    Reputation
    1,340
  • #3
    dandyoun
    Reputation
    1,100
View All

Related Models For Sale

Used Hyundai Elantra
455 Great Deals out of 45,898 listings starting at $795
Used Honda Accord
1,045 Great Deals out of 56,909 listings starting at $1,099
Used Toyota Camry
923 Great Deals out of 79,643 listings starting at $750
Used Kia Optima
402 Great Deals out of 29,490 listings starting at $2,000
Used Nissan Altima
971 Great Deals out of 77,113 listings starting at $1,000
Used Honda Civic
758 Great Deals out of 69,159 listings starting at $1,499
Used Chevrolet Malibu
966 Great Deals out of 66,096 listings starting at $1,000
Used Toyota Corolla
782 Great Deals out of 53,296 listings starting at $1,502
Used Hyundai Santa Fe
240 Great Deals out of 15,555 listings starting at $2,900
Used Nissan Maxima
273 Great Deals out of 22,814 listings starting at $1,499
Used Mazda MAZDA6
181 Great Deals out of 10,645 listings starting at $700
Used Chevrolet Impala
559 Great Deals out of 35,105 listings starting at $900

Used Cars For Sale

2018 Hyundai Sonata GLS For Sale
3 listings starting at $23,205
2014 Hyundai Sonata GLS For Sale
77 Great Deals out of 1,671 listings starting at $6,756

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.