Jump to content
CaddyInfo Cadillac Forum

Code after Code


bigjayzway

Recommended Posts

I have replaced my 02 sensor 3 times now!!!! I finally put in a bosch, and still havinf P039 code coming up! I am also getting P048 now(EGR).... What to do? How to stop it? Will it ever end!!!???

Life is too short to grow up!

Link to comment
Share on other sites


I have replaced my 02 sensor 3 times now!!!! I finally put in a bosch, and still havinf P039 code coming up! I am also getting P048 now(EGR).... What to do? How to stop it? Will it ever end!!!???

It's 4.9 right? First thing to do when 048 shows up (SES light shoul be on too) is to clean the EGR tubes inside the throttle body with a stif wire. Clean up the TB bores and the back sides of the blades with carb cleaner and tooth brush too. Code will most likely disappear. Perhaps it will help with other codes too.

The saddest thing in life is wasted talent

Link to comment
Share on other sites

Besides the codes what symptoms are you getting? Rotten Egg smell? Black smoke? Rough Idle? Hesitation?

What caused you to put in 3 O2 sensors? Why a Bosch O2 sensor? Check your FPR for dampness at the vacuum port. As Adallak said, clean the EGR ports that you see when you look down the TB. You might also want to buy an EGR gasket and pull your EGR out and clean it with a wire brush. Tap the frame lightly with a hammer to loosen the carbon. Manipulate the pindle to see if it moves freely, try to clean the pindle and seat with carb cleaner and don't get ANY carb cleaners on the diaphram you will damage it.

Check all of the associated EGR vacuum hoses for cracks and that they are connected.

post-3-1119620472_thumb.jpg

Early on sailors navigated by the stars at night and the North star became the symbol for finding ones way home. Once you know where the Northstar is you can point your ship in the right direction to get home. So the star became a symbol for finding ones way home or more symbolically even finding ones path in life.

Link to comment
Share on other sites

Another View

post-3-1119620607_thumb.jpg

Early on sailors navigated by the stars at night and the North star became the symbol for finding ones way home. Once you know where the Northstar is you can point your ship in the right direction to get home. So the star became a symbol for finding ones way home or more symbolically even finding ones path in life.

Link to comment
Share on other sites

PO39 has nothing to do with O2 sensors...

Its a torque converter engagement code....

Link to comment
Share on other sites

PO39 has nothing to do with O2 sensors...

Its a torque converter engagement code....

Wow! It does not sound good. Check the level, color, smell of transmission fluid.

The saddest thing in life is wasted talent

Link to comment
Share on other sites

Just a suggestion, why use any brand of O2 sensor but GM's AC Delco?

I too went through about 3 O2 sensors on my 1988 Seville. I finally tried the AC Delco unit. It was still in the car when I sold it. I could only got 3000 to 5000 miles out of a Echlin brand unit before the center would blow out. Never had a problem again after I installed the Delco unit.

Britt

Britt
Link to comment
Share on other sites

Just a suggestion, why use any brand of O2 sensor but GM's AC Delco?

I too went through about 3 O2 sensors on my 1988 Seville. I finally tried the AC Delco unit. It was still in the car when I sold it. I could only got 3000 to 5000 miles out of a Echlin brand unit before the center would blow out. Never had a problem again after I installed the Delco unit.

Britt

You too, Britt! Sounds like it usually takes three nonACDelco O2 sensors to be back to OEM! :lol:

The saddest thing in life is wasted talent

Link to comment
Share on other sites

I am not getting any smells, or rough idling. The tranny was rebuilt 1900kms ago and is under warranty...I got it checked today and it is fine. I would of got an ac delco again, but they were the first 2 that failed...so lol on you!

Life is too short to grow up!

Link to comment
Share on other sites

I am not getting any smells, or rough idling. The tranny was rebuilt 1900kms ago and is under warranty...I got it checked today and it is fine. I would of got an ac delco again, but they were the first 2 that failed...so lol on you!

OK. Did you get 039 after the tranny was rebuilt or before? Did you look at yur throttle body for 048?

The saddest thing in life is wasted talent

Link to comment
Share on other sites

PO39 has nothing to do with O2 sensors...

Its a torque converter engagement code....

It says 1994 Concours.....N* not 4.9.

Wouldn't the 039 be the same as p1139 ? or did it use the same codes as the 4.9 pcm.

if so p039 (p1139) is the rear heated O2 sensor before the cat converter. I would check your motor mount in the front of the car, I get the same message when I romp on it because the y to cat pipe pulls apart a little as the motor twists (I REALLY have to get in there and change it !)

Other things to look at are the fuel pressure regulator and the wires to the O2 sensors for good contact.

Link to comment
Share on other sites

Just a suggestion, why use any brand of O2 sensor but GM's AC Delco?

I too went through about 3 O2 sensors on my 1988 Seville. I finally tried the AC Delco unit. It was still in the car when I sold it. I could only got 3000 to 5000 miles out of a Echlin brand unit before the center would blow out. Never had a problem again after I installed the Delco unit.

Britt

You too, Britt! Sounds like it usually takes three nonACDelco O2 sensors to be back to OEM! :lol:

adallak,

Well, in my defense and to NAPA's credit, they exchanged each bad O2 sensor for free.

On the third one I asked for and got my money back, no problems. So hats off to NAPA for that at least! :) So I wasn't out any cash, just my time.

I have always had good luck with NAPA parts for other vehicles, but that cured me from non OEM parts for my Caddies. :o

Britt

Britt
Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...