Go Back   EcoModder Forum > EcoModding > Off-Topic Tech
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 09-03-2017, 08:46 AM   #31 (permalink)
Corporate imperialist
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,175

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 141.63 mpg (US)
Thanks: 269
Thanked 3,522 Times in 2,796 Posts
Palladium is at like a 16 or 17 year high.
Platinum is coming off like a 5 year low of 900 an ounce. I bought a few ounces, so I'm watching the price.

__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
  Reply With Quote
The Following User Says Thank You to oil pan 4 For This Useful Post:
Xist (09-03-2017)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 09-15-2017, 05:10 AM   #32 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,186

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 35.35 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 34.2 mpg (US)

Gramps - '04 Toyota Camry LE
90 day: 35.39 mpg (US)

Don't hit me bro - '05 Toyota Camry LE
90 day: 35.79 mpg (US)
Thanks: 7,217
Thanked 2,217 Times in 1,708 Posts
I tried to find more information on this method.

3,000 miles before code: https://priuschat.com/threads/acid-b....166554/page-3
12,800 miles before code: https://www.tacomaworld.com/threads/...d-wash.241619/
18 months and no code: (All Years) Catalytic Converter Citric Acid Bath P0420 - Subaru Forester Owners Forum
Almost 30,000 miles without a code: P0420 / P0430 and a "Hail Mary Pass" (the "cat washing" thread) - Page 12 - Toyota Tundra Forums : Tundra Solutions Forum
BamZipPow ran it through the dishwasher and has not had a code for 41,000 miles: http://ecomodder.com/forum/showthrea...-do-23483.html
480 miles and disappered: https://www.bobistheoilguy.com/forum...topics/3391904
Tried a few things, without clear results: https://forum.ih8mud.com/threads/cat....833570/page-2
Attempted, but did not report back: (All Years) P0420 Catalytic Citric Acid Bath (How To) - Subaru Forester Owners Forum

Who knows how accurate any of this is, but there is indication that 50% of people who try this see clear benefits, but unfortunately, it seems like hardly anyone followed the directions perfectly.
  Reply With Quote
The Following User Says Thank You to Xist For This Useful Post:
California98Civic (09-15-2017)
Old 09-15-2017, 05:24 AM   #33 (permalink)
Corporate imperialist
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,175

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 141.63 mpg (US)
Thanks: 269
Thanked 3,522 Times in 2,796 Posts
Try hydrochloric.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
  Reply With Quote
Old 09-15-2017, 11:43 AM   #34 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,186

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 35.35 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 34.2 mpg (US)

Gramps - '04 Toyota Camry LE
90 day: 35.39 mpg (US)

Don't hit me bro - '05 Toyota Camry LE
90 day: 35.79 mpg (US)
Thanks: 7,217
Thanked 2,217 Times in 1,708 Posts
This seems to indicate HCL would not provide the results I desire: Using Dilute HCl/Cl to Process Catalytic Converter - Gold Refining Forum.com
  Reply With Quote
Old 09-15-2017, 12:52 PM   #35 (permalink)
Cyborg ECU
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,373
Thanked 2,172 Times in 1,469 Posts
Quote:
Originally Posted by Xist View Post
I tried to find more information on this method.

... 18 months and no code: (All Years) Catalytic Converter Citric Acid Bath P0420 - Subaru Forester Owners Forum...
I think that Subaru link is one of the dudes I was copying in my citric acid bath cleaning. FWIW, thirteen months later and no emissions related codes (no codes at all, acutally). But I did not have a code to begin with. I had reason to suspect my 1998 OEM catalytic converter might fail emissions and wanted to be prepared. I passed emissions, barely. Then I cleaned it.
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.




Last edited by California98Civic; 09-15-2017 at 12:53 PM.. Reason: thirteen months, not fifteen.
  Reply With Quote
The Following User Says Thank You to California98Civic For This Useful Post:
Xist (09-15-2017)
Old 09-25-2017, 01:58 PM   #36 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,186

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 35.35 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 34.2 mpg (US)

Gramps - '04 Toyota Camry LE
90 day: 35.39 mpg (US)

Don't hit me bro - '05 Toyota Camry LE
90 day: 35.79 mpg (US)
Thanks: 7,217
Thanked 2,217 Times in 1,708 Posts
California98Civic was kind enough to share his cleaning supplies with me; I bought a 16 quart stainless steel stock pot for my larger Accord cat and put it on a hot plate for 10 hours. Unfortunately, the larger pot was still not deep enough, either I needed a much larger pot, much more water, and much more powder, or a turkey fryer pot. It did something, the water turned black. The water did not cover the electrolyte honeycomb, so I flipped it over halfway through, although since the sensors is in the middle I could have ignored the back half. Curiously, it ate one of my gaskets.
I did this at 179,270 miles.
http://ecomodder.com/forum/attachmen...1&d=1506362279
Attached Thumbnails
Click image for larger version

Name:	20170925_104017.jpg
Views:	156
Size:	44.0 KB
ID:	22756  
  Reply With Quote
The Following User Says Thank You to Xist For This Useful Post:
California98Civic (10-12-2017)
Old 09-25-2017, 02:25 PM   #37 (permalink)
Corporate imperialist
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,175

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 141.63 mpg (US)
Thanks: 269
Thanked 3,522 Times in 2,796 Posts
Hmmm, HCl might work a little too well.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
  Reply With Quote
Old 10-12-2017, 07:27 AM   #38 (permalink)
Cyborg ECU
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,373
Thanked 2,172 Times in 1,469 Posts
Quote:
Originally Posted by Xist View Post
... The water did not cover the electrolyte honeycomb, so I flipped it over halfway through, although since the sensors is in the middle I could have ignored the back half. ...
[imgl]http://ecomodder.com/forum/attachment.php?attachmentid=22756&stc=1&d=15063622 79[/img]
This is great. I am glad there has been no CEL for nearly 2000 miles, too! My pot was also on the small side. But the honeycomb was completely submerged for me. And I used a ladel or something to move sort of baste the top of the honeycomb. Did you monitor solution temperature at all? It is not supposed to boil, but they recommend a pretty high temperature.
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



  Reply With Quote
Old 10-31-2017, 11:50 AM   #39 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,186

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 35.35 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 34.2 mpg (US)

Gramps - '04 Toyota Camry LE
90 day: 35.39 mpg (US)

Don't hit me bro - '05 Toyota Camry LE
90 day: 35.79 mpg (US)
Thanks: 7,217
Thanked 2,217 Times in 1,708 Posts
Unfortunately, I forgot to bring my infrared thermometer, but it was never boiling when I checked on it.

Did the acid eat the coating in your pot? Mine turned green, I cleaned it, and now it is rusted!
  Reply With Quote
Old 05-17-2018, 05:29 PM   #40 (permalink)
Cyborg ECU
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,373
Thanked 2,172 Times in 1,469 Posts
Cleaned O2 sensors with this method

Decided to clean my O2 sensors with this same method, rather than using gasoline on the sensors. I figured if the light acid wash was good enough for the catalytic converter, then it should be fine for its partners in crime (the O2 sensors). I used a half gallon of tap water instead of distilled. I cooked for two hours, scrubbing occasionally with an old tooth brush. Pics:

BEFORE (upstream on left, downstream on the right):


The downstream one on the right was throwing the P0420 code.

Submerged the contact area of the sensor only:


After cooking (no boiling) outside for 2 hrs, compare the above and below photo to notice the flakes of yellow and black in middle of the pot that have gathered there due to stirring:


AFTER (upstream on left, downstream on the right):


Took it for a spin of maybe 15-20 miles. All seems good, Felt like I got into DFCO easier, sooner, but that could easily be confirmation bias. Butt dyno stuff, that.

Attached Thumbnails
Click image for larger version

Name:	IMG_20180517_111234.jpg
Views:	433
Size:	75.2 KB
ID:	24211   Click image for larger version

Name:	IMG_20180517_111444.jpg
Views:	433
Size:	50.6 KB
ID:	24212   Click image for larger version

Name:	IMG_20180517_132047.jpg
Views:	423
Size:	41.0 KB
ID:	24213   Click image for larger version

Name:	IMG_20180517_132018.jpg
Views:	435
Size:	82.0 KB
ID:	24214  
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



  Reply With Quote
The Following User Says Thank You to California98Civic For This Useful Post:
RedDevil (07-07-2018)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com