Question about 1999 Cadillac Seville STS

5 Answers

What kind of Catalytic converter do I need and where do I get it done?

Posted by Anonymous on

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  • Cadillac Master
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Take it to monroe muffler or a mechanic, Search from over 10 Million Auto Parts

Posted on Apr 03, 2015

Testimonial: "I get the muffler shop, any idea on cost?"

  •  johnny rebel
    johnny rebel Apr 03, 2015

    click on the link,it can range from 70 to 400

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  • Cadillac Master
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Randy is right buy it your self after market and bring it to the guy who is going to replace it .
But don't tell him untill after he gives you the price for the whole job you might need other things clamps bolts gaskets hangers .
Then break it down you will cut the cost in half with the convertor he won't like it but you have a contract

Posted on Apr 03, 2015

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  • Master
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If you live in california, you have to either use gm part or a part with a c a r b approval number. Plan on 4 to 700 dollars

Posted on Apr 03, 2015

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  • Cadillac Master
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Cathalytic converter are expensive your local shop can intall you one a aftermarket on its much cheaper for a reason nothing beats and original one but be ready to spend some big bucks original on have the right amouth of platine inside and that why its expensive jobber on got way less platine that why when you install a aftermarket check engine come on 6 mouth after with trouble code cathalitic efficiency but does jobber on are 5 year warranty

Posted on Apr 03, 2015

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  • Cadillac Master
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It's a 99. If it is accessible , put in an aftermarket(way cheaper). Any shop can do it.

Posted on Apr 03, 2015

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2 Answers

Whats the signs the Catalytic Converter going bad on a 2001 jeep grand Cherokee 4.0


a smell of rotting eggs --if you feel exhaust feels low flow / restricted --vehicle stalling --running rough---no start

May 12, 2017 | Jeep Cars & Trucks

Tip

I get OBD codes P0420 and P0430



P0420 and P0430

P0420 means Catalyst System Efficiency Below Threshold, Bank 1

P0430 means Catalyst System Efficiency Below Threshold, Bank 2

It means that the O2 sensors are good, and the O2 sensors are telling you that your catalytic converter, in the exhaust system is not working fine, as its emissions are polluting the air too much.

The catalytic converter is part of the exhaust system. The way to test this part is by doing an emission test. The two OBD codes that you are getting are already a test telling you that the converter must be replaced, unless an emission test done at a garage says the opposite.

This kind of problem will trigger the check engine light, and your car will also waste too much fuel.
You also risk to get in trouble if the car goes through an Air Pollution control, as the car won't pass an emission test in this condition.

To conclude, the Catalyst System must be replaced, the O2 Sensors are fine.

This is a repair that should be done at a garage, however you can find DIY instructions here:How to Replace a Catalytic Converter or you can get more detailed instructions, and step by step illustrated procedure purchasing a repair manual.

on May 27, 2009 | 2003 Chrysler 300M

1 Answer

A po652 code on a 2008 cadillac cts.3.6 L. Car want to stall and will cut off when coming to a stop. Car will start back up and sometimes has a smelly oder coming out the exhaust.


Bad Oxygen sensor. Possibly _also_ bad catalytic converter. If less than (roughly) 70,000 miles, the converter is likely good. But your symptoms are 100% consistent with a bad oxygen sensor (which are sometimes attached directly to the catalytic converter). // Note: If you do need a catalytic converter, have it done at the Dealership. The ''muffler shops'' will install a generic (probably ''ceramic'') replacement, which could adversely affect performance, gas mileage, and _definitely_ not last more than a few years.

Jan 01, 2015 | Cars & Trucks

2 Answers

My cars speedometer has been randomly jumping to 60 then back to zero or resting a 10 mph while in park and the engine does not rev up, while getting repairs done they said my catalytic converter will need...


the catalytic converter wouldnt have anything to do with that if the catalytic converter was bad it would loose alot of power u would here a rattaling and smell a rotten egg smell i would have to say its probubly your speed sensor

Nov 21, 2010 | Volkswagen Jetta Cars & Trucks

2 Answers

I have an 1998 Chevy Blazer and need to change the catalytic converter, are the flange bolts welded and can i cut them


Catalytic Converter Removal & Installation 2.2L Engine To Remove:
Catalytic converter 2.2L engine gm-03-22-734.gif

  1. Raise and safely support the vehicle.
  2. Disconnect the heated oxygen sensor (HO2S) electrical connector.
  3. Remove the exhaust manifold pipe flange mounting nuts from the catalytic converter.
  4. Remove the catalytic converter flange mounting nuts from the muffler.
  5. Remove the catalytic converter from the muffler.
  6. Remove the catalytic converter from the rear hanger bracket insulator.
  7. Remove the catalytic converter.
  8. Remove the (HO2S) from the catalytic converter.
To Install:
  1. Install the (HO2S) to the catalytic converter.
  2. Install a new gasket and the catalytic converter to the muffler.
  3. Install catalytic converter to the catalytic converter hanger.
  4. Install the catalytic converter flange mounting nuts to the muffler flange.
    • Tighten to 26 ft lbs (35 Nm).
  5. Install the catalytic converter flange mounting nuts to the exhaust manifold pipe flange.
    • Tighten to 26 ft lbs (35 Nm).
  6. Connect the heated oxygen sensor (HO2S) electrical connector.
  7. Lower the vehicle.
------ Catalytic Converter Removal & Installation 4.3L Engine To Remove:
  1. Raise and safely support the vehicle.
  2. Raise and support the transmission.
  3. Remove the transmission support
  4. Disconnect the left and right pre-converter heated oxygen sensor (HO2S) electrical connector.
  5. Disconnect the post-converter (HO2S) connector. Muffler flange and gasket gm-03-43-731.gif

  6. Remove the catalytic converter flange mounting nuts from the muffler.
  7. Remove the catalytic converter from the muffler.
  8. Remove the exhaust manifold flange mounting nuts from the catalytic converter. Catalytic converter 4.3L engine gm-03-43-735.gif

  9. Remove the catalytic converter from the support bracket insulator.
  10. Remove the catalytic converter and gaskets.
  11. Remove the heated oxygen sensor.
To Install:
  1. Install the heated oxygen sensors as needed.
  2. Install a new gasket and the Install the catalytic converter to the support bracket insulator.
  3. Install the catalytic converter to the exhaust manifold flange. Install the mounting nuts.
    • Tighten to 39 ft lbs (53 Nm).
  4. Using a new flange gasket, install the catalytic converter to the muffler. Install the mounting nuts.
    • Tighten to 30 ft lbs (40 Nm).
  5. Connect the left and right pre-converter heated oxygen sensor (HO2S) electrical connectors.
  6. Connect the post-converter (HO2S) electrical connector.
  7. Install the transmission support.
  8. Lower the transmission.
  9. Lower the vehicle.
prev.gif next.gif ---
It looks like you can cut them and replace them with new bolts and nuts.prev.gif next.gif

Sep 05, 2010 | 1998 Chevrolet Blazer

1 Answer

Like bobsmith28 (Aug 22, 2009), I too get check engine light, s80


ebay for comp unit
were thyt volvo o2 sensors

Jan 01, 2010 | 2000 Volvo S80

1 Answer

What kind of catalytic converter should I buy?


Specifically, you need one that fits and performs correctly. A high flow converter is normally for the performance/racing enthusaist. If you are someone who plans on changing the exhaust to a high performance package, then sure. If you plan on keeping the Honda stock, then roll with an oem replacement and that will be fine.

May 05, 2009 | 1992 Honda Accord

1 Answer

84 s10


Order the catalytic converter for that make and model and you will get the right size, assuming that the installation was done at the factory and has not been modified.

Feb 20, 2009 | 1984 Chevrolet S-10

1 Answer

When is my 2004 rodeo due for a tune up


P0420 means Catalyst System Efficiency Below Threshold, Bank 1
It means that your catalytic converter, in the exhaust system is not working fine, as its emissions are polluting the air too much.

The catalytic converter is part of the exhaust system. The way to test this part is by doing an emission test. The two OBD codes that you are getting are already a test telling you that the converter must be replaced, unless an emission test done at a garage says the opposite.

This kind of problem will trigger the check engine light, and your car will also waste too much fuel.
You also risk to get in trouble if the car goes through an Air Pollution control, as the car won't pass an emission test in this condition.

To conclude, the Catalyst System must be replaced, the O2 Sensors are fine.

This is a repair that should be done at a garage, however you can find DIY instructions here:How to Replace a Catalytic Converter or you can get more detailed instructions, and step by step illustrated procedure purchasing a repair manual.

Jan 13, 2009 | 2004 Isuzu Rodeo

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