Search | Car Forums | Gallery | Articles | Helper | AF 350Z | IgorSushko.com | Corporate |
| Latest | 0 Rplys |
|
Engineering/Technical Ask technical questions about cars. Do you know how a car engine works? |
Show Printable Version | Email this Page | Subscribe to this Thread |
|
Thread Tools |
10-23-2011, 12:00 AM | #1 | |
AF Newbie
|
Moilten metal on 3rd O2 sensor
I replaced my 3rd sensor found this. We thought it was lead so we heated it up but it didn't melt - is it platinum? Or melted stuff from inside the cat? WTF?
|
|
10-23-2011, 08:34 AM | #2 | |
SHO No Mo
Join Date: Jun 2004
Location: Cedar Rapids, Iowa
Posts: 10,951
Thanks: 100
Thanked 350 Times in 344 Posts
|
Re: Moilten metal on 3rd O2 sensor
Wow, that's interesting! Is the "clean" metal of the sensor around this from where you tried to heat it up, or did it come out of the car that way? As smooth as that metal looks it must have been really hot when it hit the O2 sensor. Was any exhaust welding done near that sensor?
-Rod |
|
10-23-2011, 12:52 PM | #3 | |
AF Newbie
Thread starter
|
Re: Moilten metal on 3rd O2 sensor
Good guess - there was welding done for a wideband O2 sensor but it was in front of the first cat, seems hard to imagine it traveled so far. You're probably right though.
|
|
10-23-2011, 09:21 PM | #4 | |
SHO No Mo
Join Date: Jun 2004
Location: Cedar Rapids, Iowa
Posts: 10,951
Thanks: 100
Thanked 350 Times in 344 Posts
|
Re: Moilten metal on 3rd O2 sensor
It does seem hard to imagine that weld would make it through the converter and still be hot enough to bond to the sensor.
-Rod |
|
10-24-2011, 10:32 AM | #5 | |
The RustBuster
Join Date: Feb 2006
Location: La Plata, Maryland
Posts: 2,290
Thanks: 1
Thanked 51 Times in 50 Posts
|
Re: Moilten metal on 3rd O2 sensor
That's the cat's ceramic internals melted and blown onto the downstream sensor. It'll look metallic from the platinum catalyst. Time to replace the cat and check/replace the upstream ones...they're letting the engine run rich.
__________________
Current Garage: 2009 Honda CR-V EX 2006 Mazda 3i 2004 Chevrolet Silverado 2500HD 2003 GMC Envoy XL 2000 Honda ST1100 2000 Pontiac Sunfire Vehicle History: 2003 Pontiac Vibe AWD - 1999 Acura Integra GS - 2004 4.7L Dakota Quad Cab 4x4 - 1996 GMC Jimmy 4wd - 1995 Chevrolet C2500 - 1992 Toyota Camry LE 2.2L - 1992 Chevrolet S10 Ext. Cab 4.3L - 1995 Honda ST1100 - 1980 Yamaha XS400 - 1980 Mercury Bobcat. |
|
|
POST REPLY TO THIS THREAD |
|
|