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Trouble codes 33 and 51

Tiny
BLANCA LOPEZ
  • MEMBER
  • 1991 NISSAN MAXIMA
  • 3.0L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 180,000 MILES
I understand both codes I got from my ECM but which of the two should I check? Is there any chance that my only problem could be the O2 sensor and not any of my fuel injectors? My car shakes like crazy and after 2,000 rpm's car jerks and does not want to speed up.
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Friday, August 18th, 2017 AT 2:39 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,904 POSTS
Hi,

It sounds like you have a misfire have you tuned it up lately? This will cause both codes for the O2.

Here is a guide that will help you get started:

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

Please let us know what happens so it will help others.

Cheers, Ken
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Friday, August 18th, 2017 AT 3:12 PM
Tiny
BLANCA LOPEZ
  • MEMBER
  • 13 POSTS
So far I have done spark plugs and oil filter. The link takes me no where. How do I check my car for a misfire? Thank you for the reply!
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Saturday, August 19th, 2017 AT 5:40 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,904 POSTS
Sorry try the link again, I fixed it.
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Sunday, August 20th, 2017 AT 2:23 PM

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