hesitates sometimes

2004 HYUNDAI SONATA
107,000 MILES • 2.7L • 6 CYL • FWD • AUTOMATIC
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THERESA GARBARINO
  • MEMBER
  • 1 POST
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.
Aug 6, 2017 at 10:56 AM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 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
Aug 7, 2017 at 3:00 PM
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