Could it be my catalytic converter?

Asked by Jul 04, 2014 at 11:09 AM about the 2000 Hyundai Sonata GLS

Question type: Maintenance & Repair

When I accelerate the car seems reluctant, almost sluggish, and the gas pedal vibrates so much that my whole foot shakes. It also vibrates a little when I am decelerating. I can feel a little pulsating in the brake pedal. The steering wheel does not shakes though, so I was convinced that it was not anything to do with alignment or wheels. And I recently replaced the fuel filter but that did not help.

Other interesting facts... A. it does not do it so much when the car is cold, but really starts once I've been driving for about 15 mins. B. It is getting worse -- vibrating more and more often.

9 Answers

275,945

It could be, but why replace if you haven't done the proper testing and diagnosis? Have the car inspected by your local mechanic, they can test to see if it's fuel related, ignition or the cats are clogged. Any lights lit up on the dash?

2 of 2 people found this helpful.
72,105

Is your check engine light on?

72,105

Tom,we think alike : )

No check engine light. And my mech hooked up his little diagnostic thingy 3 different times (once right after the car was doing the vibrating) and got no results. The screen said "Pass".

72,105

Ok, the only thing that will make it shake like that,if it is not skipping,would be motor mounts,and harmonic balancer.

72,105

If it is skipping ,check plug,s and wire,s.

1 of 1 people found this helpful.

The plugs look normal, but I am going to change the them anyway because... well, because why not. However TST, if it was plugs or wires (or the ignition coil), wouldn't it skip all the time? Even when it's cold? I'm really asking.

72,105

Not really,they will fire on and off,win they are bad all so.

1 of 1 people found this helpful.

Ok, I will change the plugs and see if it improves. Thanks.

Your Answer

Sonata

Looking for a Used Sonata in your area?

CarGurus has 53,359 nationwide Sonata listings starting at $1,995.

ZIP:

Hyundai Sonata Experts

  • #1
    toDumbToNotKnow
    Reputation
    1,670
  • #2
    Tom Demyan
    Reputation
    1,450
  • #3
    dandyoun
    Reputation
    1,110
View All

Related Models For Sale

Used Honda Accord
766 Great Deals out of 89,440 listings starting at $1,444
Used Hyundai Elantra
540 Great Deals out of 45,809 listings starting at $999
Used Toyota Camry
1,084 Great Deals out of 76,695 listings starting at $1,100
Used Kia Optima
465 Great Deals out of 31,586 listings starting at $2,450
Used Nissan Altima
1,064 Great Deals out of 72,994 listings starting at $900
Used Honda Civic
555 Great Deals out of 52,396 listings starting at $999
Used Chevrolet Malibu
943 Great Deals out of 52,789 listings starting at $1,599
Used Nissan Maxima
316 Great Deals out of 20,162 listings starting at $1,495
Used Toyota Corolla
928 Great Deals out of 70,474 listings starting at $1,250
Used Hyundai Santa Fe
240 Great Deals out of 17,385 listings starting at $1,950
Used Chevrolet Impala
466 Great Deals out of 31,447 listings starting at $1,000

Used Cars For Sale

2014 Hyundai Sonata GLS For Sale
49 Great Deals out of 1,164 listings starting at $5,995

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.