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

228,825

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 out of 2 people think this is helpful.
62,235

Is your check engine light on?

62,235

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".

62,235

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

62,235

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

1 out of 1 people think this is 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.

62,235

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

1 out of 1 people think this is helpful.

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

Your Answer

Add photo

Related Questions

Sonata

Looking for a Used Sonata in your area?

CarGurus has 49,603 nationwide Sonata listings starting at $1,300.

ZIP:

Search Hyundai Sonata Questions

Hyundai Sonata Experts

#1 toDumbToNotKnow
toDumbToNotKnow
Reputation 1,440
#2 Tom Demyan
Tom Demyan
Reputation 1,240
#3 dandyoun
dandyoun
Reputation 990
View All

Related Models For Sale

Used Honda Accord
703 Great Deals out of 81,926 listings starting at $500
Used Hyundai Elantra
465 Great Deals out of 51,353 listings starting at $1,699
Used Toyota Camry
836 Great Deals out of 90,858 listings starting at $1,300
Used Kia Optima
380 Great Deals out of 29,499 listings starting at $1,700
Used Nissan Altima
776 Great Deals out of 76,998 listings starting at $470
Used Honda Civic
488 Great Deals out of 80,458 listings starting at $558
Used Chevrolet Malibu
745 Great Deals out of 88,202 listings starting at $1,900
Used Toyota Corolla
729 Great Deals out of 74,097 listings starting at $1,790
Used Hyundai Santa Fe
236 Great Deals out of 17,501 listings starting at $500
Used Nissan Maxima
266 Great Deals out of 25,822 listings starting at $2,545
Used Chevrolet Impala
566 Great Deals out of 28,668 listings starting at $1,595

Used Cars For Sale

2014 Hyundai Sonata GLS For Sale
77 Great Deals out of 2,327 listings starting at $7,990
2013 Hyundai Sonata GLS For Sale
49 Great Deals out of 2,074 listings starting at $5,899