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re: Catalytic converter question…
Posted on 1/27/23 at 7:01 am to br_1560
Posted on 1/27/23 at 7:01 am to br_1560
Buy a bluetooth scanner.
Download torque pro.
Fill up with gas and a can of berrymans Chem tool fuel additive.
Set torque pro to watch O2 sensor temp.
Drive really hard, keeping rpms high, downshift if you need to. Watch the temps. Get them above 1200 degrees and keep them there.
You'll be able to burn off a large amount of the contaminants. I do it for an entire tank of fuel leading up to emissions testing. And then refill and continue to run hard until tested.
Carbon burns off between 1200 and 1400 degrees. Unlikely you can get to 1400 consistently.
Download torque pro.
Fill up with gas and a can of berrymans Chem tool fuel additive.
Set torque pro to watch O2 sensor temp.
Drive really hard, keeping rpms high, downshift if you need to. Watch the temps. Get them above 1200 degrees and keep them there.
You'll be able to burn off a large amount of the contaminants. I do it for an entire tank of fuel leading up to emissions testing. And then refill and continue to run hard until tested.
Carbon burns off between 1200 and 1400 degrees. Unlikely you can get to 1400 consistently.
1
Posted on 1/27/23 at 8:26 am to X123F45
Jack the vehicle up and place on jack stands.
Crank the vehicle and let it run for about 10 minutes to warm up completely. After warming up, get under the vehicle with it still running and with infrared thermometer ,(you can get them cheap at HF) point the laser about two inches before the cat on the exhaust pipe. Jot down the temp.
Then put it about 2 inches past the cat on the exhaust pipe and record the temp there. It should be about 100 to 110 degrees hotter than the inlet temp before the cat if it is working correctly.
It is highly unlikely the cat is bad unless it has been smashed by driving over something. Generally what causes a cat to go out is either physical damage or an engine issue such as running to too rich, lots of blow by, etc, thus clogging the cat.
I would purchase a cheap ODB2 scanner if I were you and see if the codes come up mentioning sensors, odds are the O2 sensors either before or after the cat need replacing.
Crank the vehicle and let it run for about 10 minutes to warm up completely. After warming up, get under the vehicle with it still running and with infrared thermometer ,(you can get them cheap at HF) point the laser about two inches before the cat on the exhaust pipe. Jot down the temp.
Then put it about 2 inches past the cat on the exhaust pipe and record the temp there. It should be about 100 to 110 degrees hotter than the inlet temp before the cat if it is working correctly.
It is highly unlikely the cat is bad unless it has been smashed by driving over something. Generally what causes a cat to go out is either physical damage or an engine issue such as running to too rich, lots of blow by, etc, thus clogging the cat.
I would purchase a cheap ODB2 scanner if I were you and see if the codes come up mentioning sensors, odds are the O2 sensors either before or after the cat need replacing.
This post was edited on 1/27/23 at 8:29 am
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