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1999 Toyota Corolla sometimes jerks when shifting

Tiny
SMR
  • MEMBER
  • 1999 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 50,500 MILES
Today, my check engine light came on. Sometimes, not all the time, when it is shifting into a new gear it jerks.
Wednesday, April 9th, 2008 AT 6:29 PM

4 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Check engine light is on and the reason is that the PCM detected a malfunction or a bad sensor
best way to go about it is by scanning for codes
scan the computer for code s
that will point you in the direction of the troubled area
you can post the codes for more help
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Wednesday, April 9th, 2008 AT 8:35 PM
Tiny
SMR
  • MEMBER
  • 3 POSTS
Thanks for the info. I just checked the automatic transmission fluid and it is low. Could that cause the problem? Thought I would check that out before going to get a reading on the code.
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Wednesday, April 9th, 2008 AT 9:31 PM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
It is very possible
you should still get the codes
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Wednesday, April 9th, 2008 AT 9:43 PM
Tiny
SMR
  • MEMBER
  • 3 POSTS
Thanks for your help. Turns out the transmission fluid was just a bit low. The code revealed that two cylinders were not firing. A new set of spark plugs solved the problem. The way it was acting I thought for sure it couldn't be that simple!
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Thursday, April 10th, 2008 AT 8:53 PM

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