o2 sensor problems
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 2 of 2
Northstar Engines and System Technical Discussion Discussion, o2 sensor problems in Cadillac Engine Technical Discussion; i replaced my n* engine in my 96 seville sts. now i have o2 sensor problems, i replaced all of ...
  1. #1
    96caddie is offline Cadillac Owners Member
    Join Date
    Mar 2004
    Posts
    2

    o2 sensor problems

    i replaced my n* engine in my 96 seville sts. now i have o2 sensor problems, i replaced all of them, changed the cat, checked egr valve and all wiring/hoses over and over. im getting a couple of different codes. bank 2 sensor 1/ no activity/low heater voltage same with bank 1 sensor 1 and 2. but bank 2 sensor 2 seems to be fine. the engine runs fine, sometimes a little rich and gas mileage is sometimes bad, but you can still feel those 300 horses when you put the pedal to the floor. some times the codes are current and sometimes their not. all three of the sensors are never reading bad at the same time. please help before i drive it off a cliff! also can you eliminate the cat without confusing the computer? thanks

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    BeelzeBob's Avatar
    BeelzeBob is offline I'm a Cadillac Fanatic!
    Join Date
    Dec 2002
    Location
    Fort Lauderdale, Florida
    Age
    50
    Posts
    9,577

    Re: o2 sensor problems

    Quote Originally Posted by 96caddie
    i replaced my n* engine in my 96 seville sts. now i have o2 sensor problems, i replaced all of them, changed the cat, checked egr valve and all wiring/hoses over and over. im getting a couple of different codes. bank 2 sensor 1/ no activity/low heater voltage same with bank 1 sensor 1 and 2. but bank 2 sensor 2 seems to be fine. the engine runs fine, sometimes a little rich and gas mileage is sometimes bad, but you can still feel those 300 horses when you put the pedal to the floor. some times the codes are current and sometimes their not. all three of the sensors are never reading bad at the same time. please help before i drive it off a cliff! also can you eliminate the cat without confusing the computer? thanks
    Did you use OEM sensors or aftermarket ones?? Many of the aftermarket O2 sensors are simply not compatible with the OEM electronics especially on the 96 and later OBD2 cars.

    If you eliminate the cat it will set a continuous "catalyst efficiency low" SES light.....no way around it.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting