Car starts jerking and acting erratic?

Tiny
PHINFAN13
  • MEMBER
  • 2003 HYUNDAI TIBURON
  • 2.7L
  • V6
  • FWD
  • AUTOMATIC
  • 146,000 MILES
When I drive more than 60 mph the car starts jerking and acting erratic but if I reset the ecu it is fine again. Does it need a reflash or a replacement
Saturday, February 21st, 2015 AT 8:58 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It sounds like either can fix it, I have heard of reflashing fixing all kinds of problems, but if that doesn't work you will need to replace the PCM, but we should run a CAN scan, you can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon here is a video to show you how.

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Here is the location for the PCM, you should call auto shops to see if they can run an update for you. Also, you can get a preprogrammed unit by searching Google or Ebay. Check out the images (below). Please let us know what happens.

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Saturday, February 21st, 2015 AT 10:06 AM

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