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My catalytic converter won't reset - 2002 Chevrolet Impala

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SOURCE: 2004 Blazer runs normal cold start, plenty of

The Catalytic Converter is one possibility, but not likely. If when the truck bogs down, and stalls out, this could be more related to a fuel pump issue. If on your truck the fuel pump is located inside of the fuel tank, then once the pump heats up, this would happen. Acting as though it's something electrical, but it's really not.

Posted on Sep 28, 2011

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1 Answer

Catalytic converter or Oxygen sensor


If you smell rotten eggs its usually the cat is stopped up. Go to rockauto.com and look it up, you can try the O2 sensor there also. Just bought an O2 for my Toyota for $19.

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Why my 2005 chevy astro loose power when driving, could it be catalytic converter going bad


When it comes to loosing power the only thing left is your Carb. or your injectors. your Catalyitc converter won't make you lose power, that is part of your exhuast system. run some Carb or Injector cleaner in your gas tank next time you fiill up, I use a pint of Acidton per 15 gallons but I don't suggest you do that, buy some injecter cleaner at pep boys.

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2004 Blazer runs normal cold start, plenty of power. Bogs down after warm up, diminishing power, won't go. Catalytic Converter? What is temp sensitive could bog engine down?


The Catalytic Converter is one possibility, but not likely. If when the truck bogs down, and stalls out, this could be more related to a fuel pump issue. If on your truck the fuel pump is located inside of the fuel tank, then once the pump heats up, this would happen. Acting as though it's something electrical, but it's really not.

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Pontiac Grand Am 2002, check engine light is on, codes P0420, P1441, O2S11, and O2S12. I t had been driving fine, except I had noticed fuel smell occasionally when starting. Car died while driving, at...


Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
Inspect the downstream heated oxygen sensor (HO2), replace if necessary
Replace the catalytic converter

Aug 20, 2011 | Pontiac Grand Am Cars & Trucks

1 Answer

1999 Dodge Ram won't go faster than 20 mile per hour. Hardly any air flow from tailpipe. Thinking a clogged catalytic converter?


If the catalytic converter has been inoperative for a long time there could have been soot or even creosote deposits in the muffler and they could have clogged even it. So first disconnect the muffler and see how the truck behaves.

Aug 13, 2011 | Dodge Ram 1500 Cars & Trucks

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I need to reset the check engine light....????


You need to take it to auto zone or a parts store that can read the codes for you, they won't reset it for you because they are not allowed to, but that way you can see what is causing the problem. If it's as simple as a sensor, replace run the car 3 consecutive trips and the check engine light should come off. Depending on what's causing the CEL to come on you'll know if it's an easy fix or an expensive one, like the catalytic converter. If it was because the the gas cap was left off or loose then it comes off in 3 consecutive trips where the computer checks everything is OK.

Aug 10, 2011 | 2006 Saturn ION

1 Answer

Engine light shows catalytic converter is at fault. How do I know which one, if there are more than one? How can I get a diagram of the exhaust system?


I believe that there is only one catalytic converter.
Don't be in a hurry to replace the catalyst. On an OBD II system, the computer will often throw a code for low catalyst efficiency when the oxygen sensors get old and slow to respond.
How old are your oxygen sensors? If they have over 100k miles on them, I would start there. Don't believe someone who throws a digital voltmeter on the oxygen sensor and pronounces it to be 'good'. A voltmeter will tell you if the oxygen sensor is dead, but it won't tell you if it is slow-responding, which often happens on 100k+ mile sensors.

Jul 25, 2011 | 1996 Volvo 960

1 Answer

2001 hyundai santa fe sputters and won't go past 5 miles an hour. At 3000 rpms in park it shuts down. what can I do to solve this problem, thanx


It sounds like the exhaust system is clogged. Try looking under your vehicle with a flashlight and look for bends/kinks in the exhaust pipes. I had a similar problem with my car, when the catalytic converter broke apart, and clogged the exhaust. i could barely reach 20km/hr, and the engine would shut off at 2500 rpm. Replacing the catalytic converter fixed my problem.
Matt

Jun 15, 2011 | 2001 Hyundai Santa Fe

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