Featured Dealerships & OEM Catalytic Converter Shortages

Discussion in 'Prius, Hybrid, EV and Alt-Fuel News' started by PriusCamper, Apr 17, 2021.

  1. PriusCamper

    PriusCamper Senior Member

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    It was a difficult day... Turns out a Toyota dealership in Seattle is addressing the supply shortage of cats by welding up their own (or so they claim) with non OEM cats and the wrong resonator!

    "A resonators’ sole purpose in life is to change a vehicle’s engine noise before it reaches the muffler for a final decibel reduction." source: What Is A Resonator and Why Should You Care? | The Drive

    Below is the invoice about the welding (upper right corner), two others images about using non-OEM Toyota cats that are not allowed in some CARB states.

    Guess desperate times call for desperate measures, but look at the photo below of the exhaust pipe between muffler and resonator, it's more than an inch lower than anything else! Also it lost it's rear right underbelly panel during this repair.

    But maddening part is a resonator is all about acoustics and when I put a cat cover on this car today the car came back right away with a distressed owner about it being in worse condition now. First time in years!

    Turns out if you make a turn in the car at low throttle while accelerating uphill the cat cover's front center mounts rattle at the same frequency as the wrong resonator and create a very loud rattle that goes away if you accelerate.

    But if you're cautious, like this particular Prius driver, and take your foot off the gas as soon as you hear the noise, a great deal of distress ensues. Same with me in the passenger seat... So tonight we went over all the possible sources of the noise as well as driving around alot with masks on. Solution was removing the cat shield.

    Meanwhile an unfulfilled customer will be contacting this particular Toyota dealership about their previous suspicions that their Prius was not repaired correctly and that their sense of a lack of power and engine not sounding right are valid.

    If you have any advice or insight into any of this for her, please comment! I'm gonna try to get some rest from the stress! I suggested filing a Better Business Bureau complaint...

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    #1 PriusCamper, Apr 17, 2021
    Last edited: Apr 17, 2021
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  2. wjtracy

    wjtracy Senior Member

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    Give us some background.
    Sounds like you are helping another Prius owner deal with a cat converter replacement gone wrong.
    Was this is a case of stolen cat converter? Age of car etc.
     
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  3. Georgina Rudkus

    Georgina Rudkus Senior Member

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    The owner would have been much better off with a direct aftermarket replacement cat like one of these.




     
  4. SeattleBebop1

    SeattleBebop1 Member

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    There's only one Toyota dealership in Seattle proper. We talking about Toyoto in SODO?

    I've been to them once, as the used car dealer gave me only one key and I thought it best to have an official Toyota key cut and programmed ($$$$ of course). I don't intend to go to them again; I prefer Greg's Japanese Auto. I also had Greg's install my cat shield and not Toyota; Toyota's quote installation price was ridiculous. Not a rattle with Greg's work.
     
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  5. fuzzy1

    fuzzy1 Senior Member

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    "Seattle" is often shorthand for the greater Seattle metropolitan area. It isn't clear from context which meaning he used.

    Toyota of Lake City is also in Seattle proper, but not in SoDo. And if he used the general metro meaning, then there are up to a dozen possible suspects.
     
    #5 fuzzy1, Apr 18, 2021
    Last edited: Apr 18, 2021
  6. PriusCamper

    PriusCamper Senior Member

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    I met this person on Nextdoor.com and they wanted me to install a cat shield... Simple as that. But the day was anything but simple and had to remove the shield because the wrong exhaust resonator was was amplified by the shield rattling in certain driving conditions.
     
  7. PriusCamper

    PriusCamper Senior Member

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    She didn't say what Toyota Stealership in Seattle she towed it too... I'll ask yet again if I have the chance. At same time someone with a 14 year old Prius that isn't being maintained properly and has collision damage is not the kind of car you want to work on when the owner is super uptight about little noises her beat up old car makes. Once this fiasco was over she texted me about hearing another noise, like something rolling around in the back of the car, implying that it was something I've done even though her rear bumper was smashed in and she never got it repaired and her car was full of clutter and nasty. Geez! Some people! I'll avoid working for her in the future that's for sure!
     
    #7 PriusCamper, Apr 18, 2021
    Last edited: Apr 18, 2021
  8. PriusCamper

    PriusCamper Senior Member

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    yes, but most car owners are so ill-informed about car repairs, let alone how to research affordability that they get hosed. I mean paying $2K for an aftermarket system that damaged engine performance / MPG. That should be a crime, but as always without stronger consumer protections laws, they'll keep robbing people without consequence.
     
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  9. ChapmanF

    ChapmanF Senior Member

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    That quote does appear in the cited source, but it also goes on later to say "Your vehicle will work without a resonator, but you may end up with a check engine light or other issues", giving examples like decreased performance, among others. That's a giveaway that the "sole purpose" of changing some sound isn't quite the whole story.

    Just like the resonators in the intake, which occasionally get asked about here, using the right resonator to "change the sound" has another useful effect.

    There are air-pressure pulses in the intake and exhaust manifolds when the valves open and close. In the RPM ranges the resonators are tuned for, there is a smoother flow of air into the intake snorkel and out of the tailpipe, and that does affect the sound, but it happens because a pressure wave in the resonator is matching up with the pulses in the manifold. The pressure peaks in the intake resonator come along in time to help charge air into the cylinders, and the pressure lows in the exhaust resonator come along when they can help pull exhaust out.

    None of that makes using the wrong resonator any better of an idea, of course. This is a pretty weird story. Too much of the top of that dealer invoice is cut off to really understand what they did or why they thought they had to. Any "49752 CONVERTER PIPE" that lists for $1008.46 surely isn't some off-brand part that should need adaptation....
     
  10. ILuvMyPriusToo

    ILuvMyPriusToo Senior Member

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  11. Georgina Rudkus

    Georgina Rudkus Senior Member

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  12. PriusCamper

    PriusCamper Senior Member

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