Is there anyway to test O2 sensors ??

I think my car is running in open loop since its constantly running at about 900rpms and I think it may be caused by the 02 sensors, possibly.

Looking through some reciepts and they were changes back in Nov 03'.

Any input would be great.

-matt

 

FSM states how to check the heater and O2 sensors proper.

 

Are you 1000% sure your TPS is within spec considering you have a PF TB?

 

Not 100%...Im gonna take that off first and check it

-matt

 

shake it and listen.

 

wat???

 

Matt,
Your idle speed would not be effected if o2's were bad and you should throw a code as well.

 

the only way to test your o2 sensors is with a lab scope. or a scantool if it can show values.
02 sensors work way to fast to test them with a DVM

 

what your looking for is a fast switch between 0 and 1 volt

 

yep...no lie.incase something inside possibly broke off somehow.Another way is by one of those relaly good scanners.Mechanic had one which reads all 02's in the car and the numbers fluctuate when car is one and when car is rev'd. When its below certain numbers either cat is going or sensor.

 

yea any nissan consult computer will be able to test them....

go to any local dealership and they should be able to tell you in 5 mins.


i was recently throwing a rear bank 02 code (po163 or 0707) and come to find out VIA CONSULT that my o2 sensor was STILL WORKING PERFECTLY....

 

Idle speed is not affected by O2 sensors.

 

Did you get a P0420 code through all this?