Results 1 to 20 of 20

Thread: bad O2 sensor or bad cat?

  1. #1
    Hybrid booster
    Join Date
    Dec 2005
    Location
    MID MICHIGAN
    Posts
    317

    bad O2 sensor or bad cat?

    i have a code 52 wich is a "bad O2 sensor" but i know i have a bad cat that ive been meaning to replace. could a bad cat cause this code?

  2. #2
    Admin- "Alexandria" Ken... Comes W/4 Car Garage Turbo Mopar Staff GLHSKEN's Avatar
    Join Date
    Dec 2005
    Location
    Kentucky
    Posts
    4,150

    Re: bad O2 sensor or bad cat?

    It could have led to the failure...
    Ken Adler....
    Cars, A few (9)

  3. #3
    Hybrid booster
    Join Date
    Dec 2005
    Location
    MID MICHIGAN
    Posts
    317

    Re: bad O2 sensor or bad cat?

    so chances are its both.

  4. #4
    Admin- "Alexandria" Ken... Comes W/4 Car Garage Turbo Mopar Staff GLHSKEN's Avatar
    Join Date
    Dec 2005
    Location
    Kentucky
    Posts
    4,150

    Re: bad O2 sensor or bad cat?

    Yep... one caused the other...
    Ken Adler....
    Cars, A few (9)

  5. #5
    Hybrid booster
    Join Date
    Dec 2005
    Location
    NE Ohio
    Posts
    614

    Re: bad O2 sensor or bad cat?

    Come on guys, don't start this Code 52 thread without me I've been battling a code 51 ( seldom ) and 52 ( VARY Often )since November. I'm now to the point of having someone look into my problem.

    Do you have any other symptoms? I have a stumble at slight throttle useage AND, when I keep my speed constant, any where between 25 and 35 mph, a surging. I replaced my O2 with a Autozone Bosch so IDK if that's the cause or what. If you look at my plugs, starting at the passenger side you can see I do have something amiss...no pun intended:







    I'll be watching this so you better keep it updated. My "helper" and I would like to see what's going on.

    Thanks!
    Paul

  6. #6
    Hybrid booster
    Join Date
    Dec 2005
    Location
    NE Ohio
    Posts
    614

    Re: bad O2 sensor or bad cat?

    Quote Originally Posted by GLHSKEN
    Yep... one caused the other...
    Is there any way a regular person can check for a bad cat in the driveway? Or would I have to have a shop test it?

  7. #7
    Admin- "Alexandria" Ken... Comes W/4 Car Garage Turbo Mopar Staff GLHSKEN's Avatar
    Join Date
    Dec 2005
    Location
    Kentucky
    Posts
    4,150

    Re: bad O2 sensor or bad cat?

    The stockers are very restrictive... BUT GOOD. When a cat is going.. sulpher smell is the norm as is a cherry red glow
    Ken Adler....
    Cars, A few (9)

  8. #8
    boostaholic
    Join Date
    Dec 2005
    Location
    USAville, USA
    Posts
    1,140

    Re: bad O2 sensor or bad cat?

    Quote Originally Posted by 02Gcaravan
    Come on guys, don't start this Code 52 thread without me I've been battling a code 51 ( seldom ) and 52 ( VARY Often )since November. I'm now to the point of having someone look into my problem.

    Do you have any other symptoms? I have a stumble at slight throttle useage AND, when I keep my speed constant, any where between 25 and 35 mph, a surging. I replaced my O2 with a Autozone Bosch so IDK if that's the cause or what. If you look at my plugs, starting at the passenger side you can see I do have something amiss...no pun intended:

    Thanks!
    Paul
    Wow. It's almost like you've got the wrong intake/computer combo. 1 and 2 WAY lean. I would ditch the bosch O2. Get a Mopar in there!

  9. #9
    Hybrid booster
    Join Date
    Dec 2005
    Location
    NE Ohio
    Posts
    614

    Re: bad O2 sensor or bad cat?

    Quote Originally Posted by 87glhs232
    I would ditch the bosch O2. Get a Mopar in there!
    I'm working on it...

    Now, let's get back to Brigg's original thread - Sorry for the offshoot

  10. #10
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
    Join Date
    Dec 2005
    Location
    Abbotsford, BC
    Posts
    44,167

    Re: bad O2 sensor or bad cat?

    Paul, you have a compression issue or dirty-faulty injectors, another oxygen sensor won't fix that and if your running rich due to the above, that will set a code 52.

    K-Briggs, bad cat won't set a code but if its plugged up, could trigger a rich code as the exhaust can't get out or the code 52-bad ox took out the cat. Easy to tell, drop the DP, clear codes and go for a drive, if the code doesn't come back and you've got way more power, chances are, cats plugged.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  11. #11
    Hybrid booster
    Join Date
    Dec 2005
    Location
    MID MICHIGAN
    Posts
    317

    Re: bad O2 sensor or bad cat?

    thanks guys. paul, a good way to tell if you have a bad cat is to hit it with your hand. if it sounds like metal is rattling around in there. its bad.

    oh, and i do somtimes get a slight shutter when at idle too.

  12. #12
    Hybrid booster
    Join Date
    Dec 2005
    Location
    NE Ohio
    Posts
    614

    Re: bad O2 sensor or bad cat?

    Quote Originally Posted by K-BRIGGS
    oh, and i do somtimes get a slight shutter when at idle too.
    Listen to this then:

    Exhaust Tone

    Just Right Click and Save As.

    The last two idle increases I did were in D and R, holding the brake down. The others were just in PARK.

  13. #13
    Hybrid booster
    Join Date
    Dec 2005
    Location
    MID MICHIGAN
    Posts
    317

    Re: bad O2 sensor or bad cat?

    sounds bad. mine you can feel, but thers no change in rpms.

  14. #14
    Hybrid booster
    Join Date
    Dec 2005
    Location
    NE Ohio
    Posts
    614

    Re: bad O2 sensor or bad cat?

    Quote Originally Posted by K-BRIGGS
    sounds bad. mine you can feel, but thers no change in rpms.
    That's just it - at those speeds, 25 - 35 mph - If I keep the car rolling at one of those, I get surging. But once I get into boost, ANY boost, it's running fine. I hope to God it's just the injectors....

  15. #15
    boostaholic
    Join Date
    Dec 2005
    Location
    USAville, USA
    Posts
    1,140

    Re: bad O2 sensor or bad cat?

    Quote Originally Posted by 02Gcaravan
    That's just it - at those speeds, 25 - 35 mph - If I keep the car rolling at one of those, I get surging. But once I get into boost, ANY boost, it's running fine. I hope to God it's just the injectors....
    Have you looked at the injector harness lately?

  16. #16
    Hybrid booster
    Join Date
    Dec 2005
    Location
    NE Ohio
    Posts
    614

    Re: bad O2 sensor or bad cat?

    Quote Originally Posted by 87glhs232
    Have you looked at the injector harness lately?
    I'm checking the compression Thursday so I'll be under there check them out as well.

    Although, this may be bad After buying it I had a 3 hour drive home. It was running MORE than pig rich - almost a raw fuel smell was coming from the exhaust. I got the new Bosch O2 in there a day later BUT, I didn't get an oil change until AFTER the video that my friend and I made = us "testing" our cars against one another. It was posted on TurboDodge, the one of the Saturn SC2 and me. So, running more than pig rich = fuel being dumped into the engine = oil washed down + the video = possible cylnder trouble. Like I said though, I'm checking compression Thursday. I'm hoping for the best, but if not, do you know of any T1 or T2 engines for sale that would be ready to drop in?

  17. #17
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
    Join Date
    Dec 2005
    Location
    Abbotsford, BC
    Posts
    44,167

    Re: bad O2 sensor or bad cat?

    That doesn't sound too bad but it does sound rich, definatley let us know what you find out after the compression test.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  18. #18
    Hybrid booster
    Join Date
    Dec 2005
    Location
    WEST MICHIGAN
    Posts
    323

    Re: bad O2 sensor or bad cat?

    K-BRIGGS

    Bring that car over ....we can "mod" that cat easy.....

    i still have the pipe i "modded" my cat with...a steel rod.

    deuce

  19. #19
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
    Join Date
    Dec 2005
    Location
    Abbotsford, BC
    Posts
    44,167

    Re: bad O2 sensor or bad cat?

    Quote Originally Posted by deuce dodge
    K-BRIGGS

    Bring that car over ....we can "mod" that cat easy.....

    i still have the pipe i "modded" my cat with...a steel rod.

    deuce
    Thats a bad way to do it, the empty shell makes the exhaust pulses echo and is actually bad for flow,
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  20. #20
    Hybrid booster
    Join Date
    Dec 2005
    Location
    WEST MICHIGAN
    Posts
    323

    Re: bad O2 sensor or bad cat?

    lol SIMON......

    reminds me of this really trick looking muffler i found at pic n pay.straight through. with dimples......looked awesome .and it was chrome......

    went home and did a search on it..the muffler cost $100 and had the worst flow ever...pulses just slammed into each other....

    my exhaust emptys after the hollow cat..better than stock flow.......not perfect.

    deuce

Similar Threads

  1. Replies: 13
    Last Post: 02-05-2008, 10:05 AM
  2. Bosch vs Mopar O2 sensor debate.
    By GLHNSLHT2 in forum EFI Tuning
    Replies: 13
    Last Post: 06-09-2007, 12:06 PM
  3. Running rich, bad o2 sensor?
    By Mysterio in forum "I need help!"
    Replies: 5
    Last Post: 02-03-2007, 07:42 PM
  4. Replies: 7
    Last Post: 12-29-2006, 10:24 AM
  5. Replies: 6
    Last Post: 04-14-2006, 07:04 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •