Mercedes-Benz Forum banner

Search results

1-13 of 13 Results
Advanced Search
  1. O2 sensor model question?

    W140 S-Class
    I've noticed you mention that before and I'm sort of confused on the amount of cats the car has. Are there only 2 total or 4- Primary and secondary? I'm contemplating removing the secondaries and replacing the primaries for something better but the issue ends up being in the o2 sensors and their...
  2. O2 sensor model question?

    W140 S-Class
    The issue was with the fuel pressure regulator. The car hadn't been ran since 2004 before I got it working late last year. The cat would turn red hot and on further inspection it was clogged and destroyed inside. Wouldn't take more that 2 minutes of run time to see it get near bright red on the...
  3. O2 sensor model question?

    W140 S-Class
    Yeah, got a CEL, figure I should replace them all, one of the cats was clogged (secondary driver - now removed). s500 1999 w/ 115k miles
  4. O2 sensor model question?

    W140 S-Class
    According to PelicanParts, they have that the front o2s are interchangeable regardless of sides. So I think I'll order the same model for the front ones.
  5. O2 sensor model question?

    W140 S-Class
    Hey everyone, hope a great new year is in the works for all of y'all. Question about o2 sensors. I want to replace all of them on my 99 s500 (w140). But I'm confused about model numbers. When I look it up some say front left or front right or downstream left or right. But they have the same...
  6. The project begins!

    W140 S-Class
    By soft close I still have to close it but a press down instead of a slam works. And I took off the trim above the latch on the bottom, took the 3 (or 4) nuts out then just manually pressed the latch down in hand to see if it worked and would press the key lock spring to open it up again, then I...
  7. The project begins!

    W140 S-Class
    Didn't buy it. Got it from a family friend who's wife used it as her daily then died from cancer. Sat in their driveway for like 5-10 years not being started at all. And the problems aren't that bad. It still runs and drives and it's smooth. These are just all the problems left after replacing a...
  8. The project begins!

    W140 S-Class
    Thank you guys! Looks like I have my work cut out for me. Going to go to the junkyard and see if their is stuff I can pull. And I got the scanner with clear component, but that darn o2 light never wants to leave for too long. As for paint I'm broke so I'll have not much of a choice but to just...
  9. The project begins!

    W140 S-Class
    School is done for a few weeks so I finally got my hands on the 1999 s500 w140. Right away replaced the corner lights since one was destroyed, but they aren't as flushed as the stock one. Fixed the trunk latch so even on a soft push it'll grab and close. Blew a tree's worth of leaves out of the...
  10. 1999 S500 project-ish

    W140 S-Class
    Yeah just don't want to deal with people trying to sell me everything in the shop. But even when I looked on the magnaflow site it had 2 for each pipe for a total of 4. Which is what really sucks because the driver secondary was removed for being clogged but idk if that translates to the driver...
  11. 1999 S500 project-ish

    W140 S-Class
    -_- I really hope that isn't the case. Hopefully the obd scanner or disconnecting the battery helps. I just hope even with the cel in your case, it still works properly, so the car doesn't run with a faulty A/F ratio till it went away. Can you replace them all yourselves with normal tools? I'd...
  12. 1999 S500 project-ish

    W140 S-Class
    Thank you all for the responses. Can I get 1 type of cat and replace all 4? I'm just not sure if the primaries are a different shape or whatever. Like even for this, it says on Amazon it'll fit the front right but why wouldn't it fit front left and the secondaries? And if I do get something...
  13. 1999 S500 project-ish

    W140 S-Class
    Hope everyone is doing well and the card even better. TLDR 99 S500 (built in 98 I think because of rectangular headlight shape, a little over 125k miles) help with exhaust. Do I need all 4 cats or can I just keep 2 if so what is situation with O2 sensors. ------------------- Little about me...
1-13 of 13 Results
Top