1999 4Runner - What o2 Sensor Should I Get For My Situation?

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Aug 14, 2010 | 08:55 PM

#21

TheDurk

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Joined: Feb 2007

Posts: 1,262

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From: New Jersey and Sao Paulo

Quote:

Originally Posted by shaxs

So I got around to installing the o2 sensor today. It was simple. I drove around for 45 minutes to do errands and everything seemed fine. I then left the battery unhooked for 30 minutes to clear the CEL code. I started the car up and while in park and gave it some gas. The car now stutters for a second. I took it out for a short drive and from a full stop and giving it gas, the car stutters just a tad then goes and seems to be fine. Any clue what the heck I did?

When you use the battery method to clear a code, The ECU also 'forgets' all it knows about how to trim and time the engine. So it may just be re-learning your engine. This is normal. Give it some time and see if it improves.

Aug 15, 2010 | 04:38 PM

#22

shaxs

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Joined: Feb 2010

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Thanks! My CEL came back on so I replaced the MAF. This time I went to Autozone and used their machine to delete my code. Hopefully this does the trick.

Nov 2, 2010 | 05:12 PM

#23

rom164s

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Joined: Nov 2010

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Did deleting the code work? I've cleaned my MAF and then replaced front O2 sensor on my 99 4Runner, disconnecting the negative terminal after each, and the CEL came back both times.