How many O2 sensors are on the 94 maxima?
09-08-2004, 04:50 PM
#1
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Join Date: Sep 2004
Posts: 5
How many O2 sensors are on the 94 maxima?
I have had my check enine light on and diagnostic said that I
needed an o2 sensor. I ordered one from internet then called
a mechanic to check on how much it costs to install. He asked
which one needed replacing because there was two. Is that
right? HOw would I know which needed replacing?
needed an o2 sensor. I ordered one from internet then called
a mechanic to check on how much it costs to install. He asked
which one needed replacing because there was two. Is that
right? HOw would I know which needed replacing?
09-08-2004, 05:18 PM
#3
just one. you can do it yourself if you have a jack and a 17mm wrench. that's all it takes..
and maybe some needlenose pliers to remove the clips from the chassis.. but you can get by without it.
and maybe some needlenose pliers to remove the clips from the chassis.. but you can get by without it.
09-12-2004, 07:00 PM
#5
Senior Member
Join Date: May 2004
Posts: 103
Well, I wouldn't trust my car to that mechanic, because there's only one. Also remember, there's a reason I might've gone bad. The front Y-pipes in 3rd gens tend to rust out given the age of our cars. With my experience, a rust hole in the Y-pipe caused the o2 sensor to pick up to much air, so the EFI would run the engine rich, which caused burned gas to go out the exhaust...and screwed up the o2 sensor.
just my .02
just my .02
09-13-2004, 10:26 AM
#6
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Posts: 5
Got the O2 sensor replaced now...
The engine light is still on. The diagnostic prior to replacement said the O2 was the problem but the light remains on. Should I get another diagnostic run or is there something I need to do to re-set the computer?
I am trying to get this thing throught the Cal. emissions test and they won't
even run it with the engine light on.
My fear is that the entire exhaust system is shot because of the years on the East Coast. How much should I expect to pay for a new exhaust system?
I am trying to get this thing throught the Cal. emissions test and they won't
even run it with the engine light on.
My fear is that the entire exhaust system is shot because of the years on the East Coast. How much should I expect to pay for a new exhaust system?
09-13-2004, 10:29 AM
#7
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Join Date: May 2004
Posts: 149
Originally Posted by tron
The engine light is still on. The diagnostic prior to replacement said the O2 was the problem but the light remains on. Should I get another diagnostic run or is there something I need to do to re-set the computer?
I am trying to get this thing throught the Cal. emissions test and they won't
even run it with the engine light on.
My fear is that the entire exhaust system is shot because of the years on the East Coast. How much should I expect to pay for a new exhaust system?
I am trying to get this thing throught the Cal. emissions test and they won't
even run it with the engine light on.
My fear is that the entire exhaust system is shot because of the years on the East Coast. How much should I expect to pay for a new exhaust system?
09-13-2004, 10:40 AM
#8
Donating Maxima.org Member
Join Date: May 2004
Posts: 149
Originally Posted by Knight4
You need to reset the ECM.
To reset the computer what you do is either:
1. turn your key to the on position (but don't turn the engine on), turn the diagnostics screw all of the way clockwise, let the two lights flash 4 times, turn the screw all of the way counterclockwise, turn the key to the off position and wait about 5-10 seconds.
2. Unplug the battery for 24 hours.
09-13-2004, 10:54 AM
#11
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Join Date: May 2004
Posts: 149
Remove the kick panel to the left of the passengers feet. This will expose the ECM. You should be able to see the "diagnostic" screw then. On mine, it's underneath a clear sheet of plastic that has to lifted up.
09-13-2004, 12:21 PM
#13
Donating Maxima.org Member
Join Date: May 2004
Posts: 149
Originally Posted by Knight4
Here's how:
To reset the computer what you do is either:
1. turn your key to the on position (but don't turn the engine on), turn the diagnostics screw all of the way clockwise, let the two lights flash 4 times, turn the screw all of the way counterclockwise, turn the key to the off position and wait about 5-10 seconds.
2. Unplug the battery for 24 hours.
To reset the computer what you do is either:
1. turn your key to the on position (but don't turn the engine on), turn the diagnostics screw all of the way clockwise, let the two lights flash 4 times, turn the screw all of the way counterclockwise, turn the key to the off position and wait about 5-10 seconds.
2. Unplug the battery for 24 hours.
10-05-2005, 11:06 AM
#18
Senior Member
Join Date: Mar 2002
Location: Ontario, Canada
Posts: 1,114
I went thru 3 exhausts and one O2 sensor over almost 6 years that I own the car and the O2 sensors never got seized. The one on the car looks as rusted as was the one, replaced in 2001, but it can be removed without much trouble. Maybe it's because every time it had to be removed, it was after some driving...
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