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Cat, O2 sensor cleaner recomendations?

 
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Old 03-13-2019, 07:51 AM
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Default Cat, O2 sensor cleaner recomendations?

I have seen several products for putting in the fuel tank that clean the cats and O2 sensors, any recommendations as to which is the best? Mr. Gasket, Solder One, etc??
 
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Old 03-13-2019, 10:26 AM
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I don't think any of them work, it's snake oil.
 
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Old 03-13-2019, 09:06 PM
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Since you'll probably be diving into this endeavor.... https://www.jaguarforums.com/forum/x...cement-195018/
 
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Old 03-13-2019, 09:19 PM
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Excellent! Thanks man
 
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Old 03-13-2019, 09:32 PM
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After reading over the tutorial you supplied, I see the codes are different than what my car is throwing. Mine are
P0171 and P0174...lean left and right banks...?
 
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Old 03-13-2019, 10:10 PM
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Originally Posted by 3timejag View Post
After reading over the tutorial you supplied, I see the codes are different than what my car is throwing. Mine are
P0171 and P0174...lean left and right banks...?
Since you have the "combustion too lean" on both banks at the same time, the problem is probably in one of the engine components that is common for both banks.

The generic code list states:
  • Damaged, split, perforated, dislodged, or hardened vacuum lines and/or hoses
  • Splits, tears, perforations, or other damage in the inlet ducting
  • Defective or stuck PCV valve
  • Damaged oil filler cap on some applications
  • Defective vacuum check valves or other vacuum operated components
The Jaguar code list states:
Engine misfire
Air intake leak between MAFS and throttle
Fuel filter, system blockage Fuel injector blockage
Fuel pressure regulator failure (low fuel pressure)
Low fuel pump output
HO2S harness wiring condition fault
Exhaust leak (before catalyst)
ECM receiving incorrect signal from one or more of the following components: ECTS, MAFS, IATS, TPS
 
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Old 03-13-2019, 11:31 PM
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That makes sense. When my mechanic replaced the plastic thermostat housing with an aluminum one a while back, he accidentally broke the little hose coupling that goes into the engine close to that area. He “fixed” it with some silicone, or something like that, I’ll bet that has failed. Make sense?
 
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Old 03-13-2019, 11:43 PM
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Originally Posted by 3timejag View Post
That makes sense. When my mechanic replaced the plastic thermostat housing with an aluminum one a while back, he accidentally broke the little hose coupling that goes into the engine close to that area. He “fixed” it with some silicone, or something like that, I’ll bet that has failed. Make sense?
If there is vacuum leak there, it can certainly cause problem. Whilst checking/fixing the hose you mentioned (full load engine breather), check that the small orifice in the hose connector/adapter on the cam cover is not blocked by crude (poke through with a thin rod).
 
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Old 03-15-2019, 07:38 AM
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Bingo! Lifted the left engine cover, and there it was...broken full load breather hose! Repaired it, and all is good. Thanks for “reminding “ me of that previous repair...
Still have a P1000 code I can’t figure out though.
Many thanks to all for the help and replies!
Scott
 
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Old 03-15-2019, 04:05 PM
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The P1000 was not likely to change to P1111 with a fault like that but now has a chance.
 
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