: need new O2s



parts68
05-02-06, 09:32 AM
what brand is having the best service
I havent had good luck with Bosch so dont include those.
Thinking of new Delcos(OEMS AFS73) or Nippondenso.

eldorado1
05-02-06, 10:39 AM
Delcos are the best O2 sensors for our vehicles.

DANNY BROWN
05-02-06, 10:58 AM
I Have A 2001 Deville,and I Am Experiencing Rough Idiling.I Looked Up The Current Codes Which Are Pcm171,174(bank1&bank2,fuel Trim System Lean).is This A O2 Sensor?

Ranger
05-02-06, 11:09 AM
I Have A 2001 Deville,and I Am Experiencing Rough Idiling.i Look Up The Current Codes Which Are Pcm171,174(bank1&bank2,fuel Trim System Lean).is This A O2 Sensor?
Might be a sticking EGR valve. Remove it and clean the pintle.

DANNY BROWN
05-02-06, 11:18 AM
Where Is The Egr Valve Located?

Ranger
05-02-06, 05:42 PM
Where Is The Egr Valve Located?
Go to the Tech Tips section. There is a "How To" clean the EGR with pics.

parts68
05-02-06, 11:39 PM
Delcos are the best O2 sensors for our vehicles.

thats what I bought and always have for GMs but heard on the GTP board that the Densos are working well.
At least I only need 2,my Firebird takes 4!