I wanted to share what I’ve experienced as an effective solution for the catalytic converter issues with these aging models. I know there will likely be a bunch of naysayers who cite Scottie as a hack, but I thought this could help some who truly wants to try a low cost solution for these expensive parts. After doing this treatment, my P0420 P0430 codes went away and my engine gained significant power. I’ve done this on both my 2008 Ody and 2008 Pilot with very positive results.
Here is the process I used:
1. Run gas tank down to less than 1/2 full - closer to 1/3 full.
2. Pour in an entire gallon of lacquer thinner. You can buy these at Lowe’s for $21.
3. Good on a road trip and run the engine without stopping until it is very low on gas. As you get near the end of the tank, run it at high RPMs for extended times to get the Cat very hot and burn out the buildup. I would run mine around 5K RPMs for about 45 seconds, then back off a bit, and back up again, and did this about 20 times. Don’t overheat your engine, but get that baby cleaned out.
After doing this I haven’t got the codes in over 2 years. I hope this is helpful to others. Replacing these Cats is very expensive and very difficult to do, even for those who do their own mechanic work.
Here is the process I used:
1. Run gas tank down to less than 1/2 full - closer to 1/3 full.
2. Pour in an entire gallon of lacquer thinner. You can buy these at Lowe’s for $21.
3. Good on a road trip and run the engine without stopping until it is very low on gas. As you get near the end of the tank, run it at high RPMs for extended times to get the Cat very hot and burn out the buildup. I would run mine around 5K RPMs for about 45 seconds, then back off a bit, and back up again, and did this about 20 times. Don’t overheat your engine, but get that baby cleaned out.
After doing this I haven’t got the codes in over 2 years. I hope this is helpful to others. Replacing these Cats is very expensive and very difficult to do, even for those who do their own mechanic work.