Tag Archives: Catalytic Converter

Catalytic converter car repair questions and answers from the experts. Is the check engine light on or does your vehicle accelerate sluggish. Read our growing number of articles.


Chevy Silverado Cutting Out Looses Power

Ive got a issue with my 2005 Chevy Silverado 2500. It’s got the 6.0L engine. It will run fine for a few minutes then all of a sudden it starts cutting out, looses all power, and acts like it wants to stall. I have replaced the exhaust manifold because there was a crack and I thought maybe that would cause power loss. I put new…

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Olds Aurora EVAP smoke test

I have a 2003 Oldsmobile Aurora Final 500. Replaced the manifold gasket and Catalytic Converter over the past 4 weeks, and was planning to replace a bad coil pack this week. I do not drive more than 80 – 100 miles a week, usually less. The car ran good except for a misfire that could be felt at idle and low speeds (under 50mph). Also…

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Honda Civic Transmission Acting Up

Hello I have a 2002 Honda Civic hx manual transmission that has been giving me some problems. If I don’t shift the gears early it will sputter and Jerk. Also it will not go over 60 mph or it will do the same thing. Answer: It sounds like your Honda has an engine problem not a transmission problem. The engine sputtering and jerking is usually…

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Lexus won’t go past 20mph

Lexus es300 won’t go pass 20mph and we’ve changed everything. Answer: The most common cause for a vehicle to not be able to accelerate past 20 MPH is a plugged catalytic converter. When they get plugged, this causes a restriction in the exhaust system and will not allow the engine to breathe. The catalytic converter can get plugged because the engine is running too rich-…

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1997 Pontiac Grand Am Quad Driver And Oxygen Sensor Codes

If I put my 1997 Pontiac grand Am shifts into gear too soon after starting it, it sets a check engine light and i get the trouble code 26 -Quad Driver. I had the PCM replaced because of other problems that I still having. Car will not accelerate in reverse, gets bad gas mileage, has DTC 13,  goes slow climbing hills, and poor acceleration from a stop. I have already changed the oxygen sensor, spark…

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2004 Pontiac Grand Prix Catalytic Converter I/M Flag Not Ready

2004 Pontiac Grand Prix with a “2” motor will not go “Ready” with the catalytic converter test for I/M testing. I went in the service manual and did the testing for P0420 where you run the car for 1 minute in park then put in in drive while observing air/fuel mixture. The readings change from 14.7/1 to 12.3/1 then changes to 16.9 /1 as the…

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Pontiac Grand Prix Catalytic Converter And ABS Codes

Check engine light codes problem with my 2002 Pontiac Grand Prix GT. 3.8L non supercharged. ABS, Track Off and Service engine soon. GM Computer codes  C0045, C0046, C0245, P0303, P0420, P0172. Reason for code P0420 is because I don’t have a catalytic converter. Ever since I retrieved the code P0303 I have changed all of the spark plugs,fuel pressure regulator, fuel injector for cylinder 3 and…

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2003 Pontiac Grand Prix Transmission And Catalytic Converter Codes

I have a 2003 Pontiac Grand Prix GT with a 3.8L Series II engine. I am having 2 different issues with this vehicle. First, the transmission has started jerking hard into gears. It seems that it only does it once the car gets up to a normal operating temperature. I will be stopped at a stop sign or stop light and once I start going…

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2001 Pontiac Grand Prix Check Engine Light

I recently replaced my EGR valve because the check engine light code came up on my car, along with that I also had to replace my catalytic convertor, from what the mechanic I went to said, is that the bad EGR valve caused the catalytic converter to clog, I don’t know how true this is because I recently talked to someone that said that a bad…

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2002 Pontiac Grand Prix Transmission Or Catalytic Converter

I have a 2002 Pontiac Grand Prix. Over the last few weeks i have had trouble with the can being jerky while accelerating also i tends to do this more the warmer the car gets ie: runs good in the am but by lunch time it’s acting up. Also i noticed this morning that the trans didn’t seem to be shifting from 3rd to drive…

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2002 Pontiac Montana Cuts Off At Higher RPM’s

2002 Pontiac Montana 3.4L OHV had oxygen sensor code but replaced it and cleared. Head gaskets were leaking as well so replaced (milled heads, pressure tested, valve job, replaced 4 bent intake valves), also replaced plugs, wires, coils and ignition module and O2 sensor, cleaned throttle body. Car cuts out at a specific RPM in relation to how warm the engine is, when cold there…

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1999 Chevrolet Blazer Misfire Cylinder Number 2

Hello, I have a 1999 Chevy Blazer 4×4, 4.3l Vortec v6. Truck starts, and idle & rev are great til about 2500 rpm. Hooked up OBDII scanner, gave a “P0302” code which states “cylinder 2 misfire”. From what I found on Blazer Forum net, shows possible ignition problems. Went through and changed the distributor cap and rotor. Then the ignition coil, then the swapped plug…

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1999 Oldsmobile Alero Whistling Noise

I have a 1999 Oldsmobile Alero and it’s making a whistling noise. Sounds like it’s coming from the vacuum pack at the rear end. It will be fine when I first start it but then after about 2 miles of driving it starts making the noise. It will do it no matter if I’m driving or if I’m in park. I don’t know what it…

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Vehicle Emissions System Problems And Repairs

Based on the amount of repairs we do on emission components on just about every type of vehicle, I thought I would write an article talking more about the parts and workings of the emission control systems on late model vehicles. More often than not, when we get a car or truck that comes in the shop with a check engine light on, it will…

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