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catalytic converter


glp6746
08-28-2006, 07:52 AM
I am waiting for the dealer to call me back with some bull. I brought the car in for a catalytic converter replacement which my local shop told me was no good and that was the source of the rattling.
They told me it was covered under the 8/80 warranty, because the car has only 57,000 well kept miles on it.
The early phone call with the service manager already told me I was in for it, he told me if the car isn't running exactly right it could prematurly wear out the C.C. We'll get back to you.

The car has never given me a problem, no hesitation, loss of power, hard starting, or service lights ever came on. Maintenance and oil always done regularly (not there).

What kind of crap is he gonna come up with to charge big dollars for some repair and what ammunition do I have to come back with?

ricebike
08-28-2006, 08:54 AM
i'll wait for the update...

was the check engine light on?

did the previous independent shop said any trouble codes was stored in the cars computer?

glp6746
08-28-2006, 09:01 AM
no, no lights ever came on so they didn't check for codes.

MT-2500
08-28-2006, 09:03 AM
I am waiting for the dealer to call me back with some bull. I brought the car in for a catalytic converter replacement which my local shop told me was no good and that was the source of the rattling.
They told me it was covered under the 8/80 warranty, because the car has only 57,000 well kept miles on it.
The early phone call with the service manager already told me I was in for it, he told me if the car isn't running exactly right it could prematurly wear out the C.C. We'll get back to you.

The car has never given me a problem, no hesitation, loss of power, hard starting, or service lights ever came on. Maintenance and oil always done regularly (not there).

What kind of crap is he gonna come up with to charge big dollars for some repair and what ammunition do I have to come back with?

http://www.troublecodes.net/articles/catfailure/

DTC P0420, P0421, P0430 & P0431: Check Possible Cause Of Misfire DTC P0420 and P0421 indicates bank one catalyst system efficiency is minimum requirement. DTC P0430 and P0430 indicates bank 2 catalyst system efficiency is minimum requirement. Possible causes are as follows: Use of leaded fuel. Oil contamination. Cylinder misfire. Fuel pressure too high. HO2S sensor improperly connected. Damaged exhaust system component. Faulty ECT sensor. Faulty HO2S. Ensure ignition timing is correct. Retrieve all Continuous Memory DTCs. If misfire code(s) is not present, go to next step. If misfire code(s) is present, isolate cylinder and repair as necessary. Check HO2S Monitor DTCs If DTCs P0136, P0138, P0140, P0141, P0156, P0158, P0160, or P0161 were present in step 1), service as necessary before continuing. If none of these codes are present in step 1), go to next step. Check ECT Sensor DTCs If DTCs P0117, P0118, P0125 or P1117 were present in step 1), service as necessary before continuing. If none of these codes are present in step 1), go to next step. If any codes except P0420, P0421, P0430 and/or P0430 were present in step 1), service as necessary before continuing. If no codes except P0420 and/or P0430 were present in step 1), go to next step. Check Rear HO2S Wiring Harness Turn ignition off. Ensure HO2S wiring harness is correctly routed and connectors are tight. Repair or replace as necessary. If wiring harness and connectors are okay, go to next step. Check Fuel Pressure Turn ignition off. Release fuel pressure. Install fuel pressure gauge. Start engine and allow to idle. Note fuel pressure gauge reading. Increase engine speed to 2500 RPM and maintain for one minute. For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article. If fuel pressure is as specified, go to next step. If fuel pressure is not as specified, go to CIRCUIT TEST HC . Check For Exhaust System Leaks If exhaust system leaks, it may cause catalyst monitor efficiency test to fail. Inspect exhaust system for cracks, loose connections or punctures. Repair or replace as necessary. If exhaust system is okay, go to next step. Check For Exhaust System Restrictions Inspect exhaust system for collapsed areas, dents or excessive bending. Repair or replace as necessary. If exhaust system is okay, go to next step. Check Manifold Vacuum Install tachometer. Connect vacuum gauge to intake manifold vacuum source. Start engine and raise engine speed to 2000 RPM. Manifold vacuum should rise to more than 16 in. Hg. If manifold vacuum is okay, go to next step. If manifold vacuum is low, go to step 11). Leave tachometer and vacuum gauge connected. Start engine and raise engine speed to 2000 RPM. On a non- restricted system, manifold vacuum should quickly rise to normal range as increased RPM is maintained. On a restricted system, manifold vacuum will slowly rise to normal range as increased RPM is maintained. If manifold vacuum is okay, no indication of exhaust leak or restriction has been detected and testing is complete. If manifold vacuum is low or slow to respond, go to next step. Leave tachometer and vacuum gauge connected. Remove exhaust pipe from exhaust manifold. Start engineand raise engine speed to 2000 RPM. If manifold vacuum is now okay, fault is downstream from exhaust manifold. Reconnect exhaust pipe to exhaust manifold and go to next step. If manifold vacuum is still low or slow to respond, fault is in exhaust manifold or intake manifold gasket. Repair or replace as necessary and repeat QUICK TEST. Leave tachometer and vacuum gauge connected. Disconnect muffler/tailpipe assembly from rear of catalytic converter. Start engine and raise engine speed to 2000 RPM. If manifold vacuum is now okay, fault is in muffler/tailpipe assembly. Repair or replace as necessary and test drive vehicle to verify elimination of symptom. If manifold vacuum is still not okay, fault is in catalytic converter. Repair or replace as necessary. Check tailpipe/muffler assembly for debris from catalytic converter. Test drive vehicle to verify elimination of symptom.

glp6746
08-28-2006, 09:12 AM
yikes, sounds like there's a lot of room in there for them to come up with something to not warranty this cat.

MT-2500
08-28-2006, 09:19 AM
yikes, sounds like there's a lot of room in there for them to come up with something to not warranty this cat.


As far as I know they can not refuse to warranty it.
And it is part of the warranty to check things out.
Also it could be actually just be a bad cat.
Keep on there case and if they do not do anything call the 800 customer service no in your owners manual.
Let us know how it goes.
MT

glp6746
08-29-2006, 11:49 AM
Just to update, no crap yet. The dealership agreed it was a faulty C.C., but none were in stock. It would take 3-5 days for it to come in, then I would bring the car back. So, so far it's covered under warranty.

glp6746
10-19-2006, 11:01 AM
O.K., It took a month for the dealership to get the part and another 2 1/2 weeks for me to free up time to get the there, but no BS. They replaced the exhaust system from the C.C. to the muffler and tailpipe under full warranty.

MT-2500
10-19-2006, 11:27 AM
O.K., It took a month for the dealership to get the part and another 2 1/2 weeks for me to free up time to get the there, but no BS. They replaced the exhaust system from the C.C. to the muffler and tailpipe under full warranty.


Thanks for posting back and letting us know how it went.
Glad you got it fixed.
And you are not alone on cat problems.
Look what these people have to look forward to here.

Dear General Motors Customer:

As the owner of a 2001-02 Chevrolet Impala, Monte Carlo; Pontiac Grand Prix; or Buick Regal model vehicle, equipped with a 3.4L or 3.8L V6 engine, your satisfaction with our product is very important to us.

This letter is intended to make you aware that some 2001-02 Chevrolet Impala, Monte Carlo; Pontiac Grand Prix; and Buick Regal model vehicles, equipped with a 3.4L or 3.8L V6 engine, may have a condition where the catalytic converter is replaced due to complaints of lack of power or illumination of the Malfunction Indicator Lamp (MIL). This may be due to the front endcone insulation from the catalytic converter breaking away and blocking the front of the first catalyst brick and preventing the free flow of exhaust gas through the converter.

This is not a recall. Do not take your vehicle to your GM dealer as a result of this letter unless you believe that your vehicle has the condition as described above.

What We Have Done
General Motors is providing owners with additional protection for the Catalytic Converter. If this condition occurs on your 2001-02 Chevrolet Impala, Monte Carlo; Pontiac Grand Prix; or Buick Regal model vehicle, equipped with a 3.4L or 3.8L V6 engine, within 10 years of the date your vehicle was originally placed in service or 120,000 miles (190,000 km), whichever occurs first, the condition will be repaired for you at no charge .

What You Should Do
Repairs and adjustments qualifying under this special coverage must be performed by a General Motors dealer. You may want to call the service department at your dealer to find out how long they will need to have your vehicle so that you may schedule the appointment at a time that is convenient for you. This will also allow your dealer to order parts if they are not already in stock. Keep this letter with your other important glove box literature for future reference.
__________________

Whoaru99
10-19-2006, 01:55 PM
Sounds like a pretty reasonable response to me. They coulda said nothing and hoped for few in-warranty failures.

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