1999 Toyota Corolla sometimes jerks when shifting

1999 TOYOTA COROLLA
50,500 MILES • 4 CYL • FWD • AUTOMATIC
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SMR
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  • 3 POSTS
Today, my check engine light came on. Sometimes, not all the time, when it is shifting into a new gear it jerks.
Apr 9, 2008 at 6:29 PM
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BMRFIXIT
  • CAR REPAIR CONTRIBUTOR
  • 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
Apr 9, 2008 at 8:35 PM
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SMR
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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.
Apr 9, 2008 at 9:31 PM
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BMRFIXIT
  • CAR REPAIR CONTRIBUTOR
  • 19,053 POSTS
it is very possible
you should still get the codes
Apr 9, 2008 at 9:43 PM
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SMR
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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!
Apr 10, 2008 at 8:53 PM
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