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Thread: Catalytic Converter(s)?

  1. #1
    Join Date
    Jul 2006
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    Kansas City, MO
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    Question Catalytic Converter(s)?

    So the past week I'll be out driving and when i come to a stop, I will occasionally smell what I first thought was 2-4D so I figured that someone had sprayed some herbicide. Later, I had a friend in the car and he smelled it to but thought it smelled like natural gas (rotten eggs).

    To add to this, I have started to get an engine code of SYS TOO LEAN bank 2 and I have started hearing popping sounds from under the passenger side when the car is warming up or under acceleration.

    A quick search of the Internet suggests that one or more Cat is used up. Would this also be the group consensus here?
    Black 2004 Marauder with bun warmers, escape hatch and 20% tint.
    #3200 of 3214 built #1230 of 1237 in black

    1988 Dodge Diplomat SE "Grandma"

  2. #2
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    Could be as simple as a lazy o2 sensor on the drivers side front causing the PCM to add fuel.

    The rotten egg smell is excess fuel getting burnt off in the cat.

    You could very well have unmetered air entering the drivers side of the engine to.

    Check the obvious things before thinking about replacing the cats. Something would have to create the failure anyways.


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  3. #3
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    Do you have a exhaust leak at the egr or manifold? Popping might be fuel in the exhaust, like bob said. Too rich

    How many miles per tank?

    Poor gas mileage?

    I'm in KC too
    The twins2.3 whipple/aluminatorVortech V-2 lots of goodies

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  4. #4
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    Bring the car by the house Friday afternoon Bryan and I will look at it.
    Neil
    2003 Mercury Marauder - DBP/DC
    2003 Mercury Marauder - BLK/DC
    2003 Mercury Marauder - SB/LF
    2004 Mercury Marauder - DTR/LF
    1964 Mercury Marauder - BLK/BLK

  5. #5
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    Yup Happy to help
    The twins2.3 whipple/aluminatorVortech V-2 lots of goodies

    Current marauders
    04 DTR totaled JUST NOW starting to part out 7-21-2021 https://youtu.be/REUxjP1BVpg

    04 Silver Birch Dark Charcoal Hardtop Whipple Supercharger
    04 Silver Birch Dark Charcoal Hardtop V2 Supercharger
    04 Silver Birch Dark Charcoal Converted
    03 DBP Light Flint #122
    03 DBP Dark Charcoal #232
    03 Silver Birch 300b Light Flint Going to fix er up
    03 Black 300a
    04 Silver Birch Dark Charcoal moonroof in the works

    04 Heaton Swapped DTR
    Joe's Wrecked DTR rebuild thread

  6. #6
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    My catalytic converter failed on a used 04 at 113,000 miles due to numerous miss fires from the previous owner not changing plugs and COPS. Similar code but also bang the cat with your hand. If your hear a rattle- bad cat. The right side cat had a darker, rusty color then the left as well as burnt insulation against the firewall/passenger slope area next to it. Changed one cat and both O2 sensors, gaskets and bolts all OEM including cat-no problems. Tail pipe chrome tip had black soot.

  7. #7
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    Last night when I drove home, as soon as I got off 435 onto 63rd, the popping became quite frequent and loud. Driving home from there sounded like I was riding in something fueled by Orville Redenbacher.

    I got up this morning and as soon as I put the car in drive, the popping commenced again. So it's not a hot engine/exhaust issue. The popping only happens when the car is in motion. If in park or neutral, I can rev the engine and not hear the popping.

    To add to this, there is also a buzzing sensation throughout the car when driving over 30 mph.

    I ended up taking her to Dick Smith Ford in Raytown this morning mostly due to no other transportation options (the Dodge isn't currently tagged). I'd love to meet up with you guys so we can hash out the issue and also meet some fellow Marauder fans but I will probably end up letting the stealership deal with the issue.
    Black 2004 Marauder with bun warmers, escape hatch and 20% tint.
    #3200 of 3214 built #1230 of 1237 in black

    1988 Dodge Diplomat SE "Grandma"

  8. #8
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    They can diagnose it and you can fix it. Most likely coil on plugs and spark plugs, let us know if you need help
    The twins2.3 whipple/aluminatorVortech V-2 lots of goodies

    Current marauders
    04 DTR totaled JUST NOW starting to part out 7-21-2021 https://youtu.be/REUxjP1BVpg

    04 Silver Birch Dark Charcoal Hardtop Whipple Supercharger
    04 Silver Birch Dark Charcoal Hardtop V2 Supercharger
    04 Silver Birch Dark Charcoal Converted
    03 DBP Light Flint #122
    03 DBP Dark Charcoal #232
    03 Silver Birch 300b Light Flint Going to fix er up
    03 Black 300a
    04 Silver Birch Dark Charcoal moonroof in the works

    04 Heaton Swapped DTR
    Joe's Wrecked DTR rebuild thread

  9. #9
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    Hey, by the way, don't bang any hot catalytic converters if you like skin on your hands. Cold engine/exhaust check Please!!

  10. #10
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    Quote Originally Posted by DrZ View Post
    Hey, by the way, don't bang any hot catalytic converters if you like skin on your hands. Cold engine/exhaust check Please!!
    Solid advice!

  11. #11
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    why would I bang, tap,touch catylitic converter with bare hand when i know it is hot?
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  12. #12
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    Talking

    Quote Originally Posted by RubberCtyRauder View Post
    why would I bang, tap,touch catylitic converter with bare hand when i know it is hot?
    For the same reason that people touch the plate when the waitress places a hot plate in front of them using a pot holder and says "Careful, the plate is hot".
    Black 2004 Marauder with bun warmers, escape hatch and 20% tint.
    #3200 of 3214 built #1230 of 1237 in black

    1988 Dodge Diplomat SE "Grandma"

  13. #13
    Join Date
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    Location
    KC
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    Dealer tell you what's wrong with it?
    The twins2.3 whipple/aluminatorVortech V-2 lots of goodies

    Current marauders
    04 DTR totaled JUST NOW starting to part out 7-21-2021 https://youtu.be/REUxjP1BVpg

    04 Silver Birch Dark Charcoal Hardtop Whipple Supercharger
    04 Silver Birch Dark Charcoal Hardtop V2 Supercharger
    04 Silver Birch Dark Charcoal Converted
    03 DBP Light Flint #122
    03 DBP Dark Charcoal #232
    03 Silver Birch 300b Light Flint Going to fix er up
    03 Black 300a
    04 Silver Birch Dark Charcoal moonroof in the works

    04 Heaton Swapped DTR
    Joe's Wrecked DTR rebuild thread

  14. #14
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    Quote Originally Posted by 8UWITH6 View Post
    Bring the car by the house Friday afternoon Bryan and I will look at it.
    That's awesome

  15. #15
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    Quote Originally Posted by Hauser717 View Post
    For the same reason that people touch the plate when the waitress places a hot plate in front of them using a pot holder and says "Careful, the plate is hot".
    well, to each their own, if you touch it, you deserved it.
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

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