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Thread: Oxygen Sensor turned red
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06-23-2008, 09:27 AM #1
- Join Date
- Jun 2008
- Location
- Idaho Falls, ID
- Posts
- 2
red- 2002
Oxygen Sensor turned red
Questions:
1. What will turn an O2 sensor RED?
2. Why a new bouncing RPM indicator?
I have an LS1 in an RV7 kitbuild airplane. I haven't been able to find any mechanics that I trust who seem to know what they're talking about when it comes to BOTH airplanes and LS1 engines; so I decided to educate myself (just starting).
The engine was running rough and backfired on the R-side only. I replaced the R-side O2 sensor and it resolved. Immediately after this 10-minute repair, the RPM Indicator started bouncing by 700 RPMs but only when the enginge is between 1500-2300 RPMs. I replaced the L-side O2 sensor and the engine is even smoother, but still RPM needle bouncing:
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06-24-2008, 03:27 PM #2
Stuck injector or valve. Pull plugs and check to make sure there not fouled. Plugged cat may also be an issue
J2001 SS, Its not the car its the Driver that matters....
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06-24-2008, 03:33 PM #3
- Join Date
- Jun 2008
- Location
- Idaho Falls, ID
- Posts
- 2
red- 2002
Thanks a lot, I'll check on the plugs. The nice thing about the airplane is I don't need a cat.
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06-26-2008, 02:06 PM #4
Key ? here. . . . . . . . . !
You said it's in a plane. You are running 100 octane Aviation Fuel in it then you get at the air port right?
Even though MANY refer to that as a No Lead fuel it actually has a high content of lead.
Welcome to the site!
Can we get some pics?Don't be afraid of the bottle!!! Be afraid of your tune!!!
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