Question about 2002 Pontiac Grand Prix

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I have recently put in a new catalytic converter in my 2002 Grand Prix. Before I put it in the check engine lights were on. After I put it in, it went off. I have driven it almost 400 miles and yet it failed inspection. No other lights have come on, and I have been spending a lot of money on this car. Any advice or suggestion about what I should do to get it to pass?

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  • Pontiac Master
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Yes, pull the error codes from the computer, and follow thier indications, then take the emission readings to a mechanic and have them diagnose from that. PArts replacement is TOO expensive, only replace what is needed...

Posted on Sep 07, 2010

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1 Answer

I have put 3 catalytic converters on my 2002 pontiac grand prix in the last 3 years, because it won't pass emissions, could something else be wrong?


Sounds like it might be running to rich.I would replace the fuel pressure regulator because it cause a rich condition.When the engine came on what was the number of the trouble code?

Jan 24, 2012 | 2002 Pontiac Grand Prix

1 Answer

2003 Grand Prix service engine light on even after new catalytic


I wouldn't have gotten a cat. If the o2s are all replaced, then it could be an EGR valve

Oct 06, 2009 | 2003 Pontiac Grand Prix

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2001 grand prix gt 3800 engine started boging down changed fuel pump and filter still doing it sitting still at high rpms it boges an its like its loosing throttle


try taking the oxygen sensor out of the manifold by the firewall and take it for a ride,it sounds like u have a plugged catalytic converter,by removing the sensor your givin the pressure somewhere to escape,if u do have to replace the cat converter i would suggest putting a factory converter on it because if u dont, the check engine light will come on due to the fact that aftermarket converters only have three of the four precious metals required to work properly thats why they are cheaper

Sep 06, 2009 | 1997 Pontiac Grand Prix

2 Answers

2002 pontiac grand prix gtp running really rough and puttin


Do you have a check engine light on? Try driving it with the MAF unplugged.

Mar 14, 2009 | 2002 Pontiac Grand Prix

1 Answer

Throttle being limited on my 05 grand prix..V6 supercharged


I would check for a plugged catalytic converter.

Mar 12, 2009 | 2005 Pontiac Grand Prix

3 Answers

I am getting a misfire on cylinder #5, I have changed the coil, wire and spark plug but still get the misfire error code 0305 on cylinder 5 all the time. Runs pretty rough too. I have the same...


Here is a copy of the "Policy Adjustment" that I took to the dealer with me this morning. Hope this helps any of you.

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Subject: Special Policy Adjustment - Catalytic Converter #05551 -(09/14/2005)
Models: 2001-02 CHEVROLET IMPALA, MONTE CARLO
2001-02 PONTIAC GRAND PRIX
2001-02 BUICK REGAL
EQUIPPED WITH 3.4L (RPO LA1 - VIN E) OR 3.8L (RPO L36 - VIN K) V6 ENGINE
----------
Condition
Some customers of 2001-02 Chevrolet Impala, Monte Carlo; Pontiac Grand Prix; and Buick Regal model vehicles, equipped with a 3.4L (RPO LA1 - VIN E) or 3.8L (RPO L36 - VIN K) V6 engine, may experience a condition where the vehicle exhaust 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.
Special Policy Adjustment
This special policy covers the condition described above for a period of 10 years or 120,000 miles (190,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. The repairs will be made at no charge to the customer.
For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after September 15, 2005 are covered by this special policy and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to September 15, 2005 must be submitted to the Service Contract provider.
Vehicles Involved
Involved are all 2001-02 Chevrolet Impala, Monte Carlo; Pontiac Grand Prix; Buick Regal model vehicles, equipped with a 3.4L (RPO LA1 - VIN E) or 3.8L (RPO L36 - VIN K) V6 engine and built within the following VIN breakpoints:
Year
Division
Model
From
Through
2201
Chevrolet
Impala
19100001
19378250
2001
Chevrolet
Monte Carlo
19100001
19378233
2001
Pontiac
Grand Prix
1F100004
1F275188
2001
Buick
Regal
11100004
11338085
2002
Chevrolet
Impala
29100001
29374833
2002
Chevrolet
Monte Carlo
29100016
29374832
2002
Pontiac
Grand Prix
2F100019
2F276927
2002
Buick
Regal
21100001
21288762
Parts Information
Parts required to complete this special policy are to be obtained from General Motors Service Parts Operations (GMSPO).
Part Number
Description
Qty/ Vehicle
10343187
Converter, Catalytic (L36 engine)
1
10343185
Converter, Catalytic (LA1 engine)
1
10328740
Gasket, Catalytic Converter (Converter to I-Pipe, both)
1
15286606
Gasket, Exh Manif Pipe (L36)
1
24505057
Gasket, Exh Manif Pip (LA1)
1
Customer Notification
General Motors will notify customers of this special policy on their vehicles (see copy of typical customer letter included with this bulletin - actual divisional letter may vary slightly).
Service Procedure
Catalytic Converter Inspection
Begin the inspection by reviewing the condition described by the customer. Refer to "Description and Operation," SI document 657895, to help you determine the correct symptom diagnostic procedure when a malfunction exists.

Sep 28, 2008 | 2001 Pontiac Grand Prix

1 Answer

Engine overheats on Pontiac 2002 GP


Check the catalytic converter. If it is clogged, it will reduce your your power and increase the temp of the car, especially on steep inclines.

Aug 22, 2008 | 2002 Pontiac Grand Prix

2 Answers

2002 grand prix


I just had the same problem. Check the catalytic converter. It took me forever to get over 30 or 40. Drove everyone in the road nuts. They initially thought it was the transmission. Not so, clogged catalytic converter. I got it tuned up and the engine runs fine. Wish I could sasy that about everything else on this lemon!

Aug 16, 2008 | 2002 Pontiac Grand Prix

2 Answers

HELP


Possible clogged catalytic converter. Is the check engine light on?

Aug 16, 2008 | 2002 Pontiac Grand Prix

1 Answer

O2 sensor 2002 pontiac gran prix


It is in the exhaust pipe on the engine side of the catalytic converter, it is round, you may need a special socket to get it out.

Jun 23, 2008 | 2002 Pontiac Grand Prix

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