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Hesitates sometimes

Tiny
THERESA GARBARINO
  • MEMBER
  • 2004 HYUNDAI SONATA
  • 2.7L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 107,000 MILES
My car drives great. All of the sudden while driving it starts jerking like it does not want to go. Does it for a short period then it goes okay. I have replaced spark plugs and wires, injector flush, that didn't help. Then I replaced timing belt and it is still doing the same thing. No check engine light is on.
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Sunday, August 6th, 2017 AT 10:56 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,961 POSTS
Hello,

It sounds like one of two things is going on either the MAF is not reading right which common or you have a catalytic converter that is failing apart and plugging the exhaust.

Here are a couple of guides to get us going in the right direction:

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

and

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

and

https://www.2carpros.com/articles/engine-hesitates

Please let us know what happens.

Cheers, Ken
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Monday, August 7th, 2017 AT 3:00 PM

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