Excessive soot on tailpipe
#1
Excessive soot on tailpipe
I have had my Rover for about 2 yrs and the last few months I have noticed a black soot ring on the tailpipe, what would the cause be... ? Maybe burning oil or excessive fuel?
I do have a bad O2 sensor (S1B1) which has been that way for a yr or more. Still trying to fault find, but my guess is bad wiring. As I tried the computer already. Any thoughts or help...
Cheers!
I do have a bad O2 sensor (S1B1) which has been that way for a yr or more. Still trying to fault find, but my guess is bad wiring. As I tried the computer already. Any thoughts or help...
Cheers!
#2
#3
#4
No other codes just P0134... I'll check the trims to see what they are and report back (Have a NANOCOM).
Cheers!
#5
P0134 O2 sensor circuit no activity detected (bank 1,
sensor 1)
Front sensor LH bank open circuit
sensor 1)
Front sensor LH bank open circuit
......
#6
#7
You can try a bypass test to see if the signal wire is able to send a signal to the computer. Connect the scan tool and watch the data pid for the sensor. Back-probe the signal wire on the o2 sensor and touch one hand to battery positive and the other to the back-probe pin. It should max out the signal reading if everything is connected properly. The resistance through your body is more than enough to protect the circuit. Normally the reading has a maximum of 1.25 volts or so, but it could read higher. If it does go to the max reading, then you know that the sensor is at fault. If it doesn't, then you know the signal wire has a break in it somewhere, or the computer may be faulty.
To further test the circuit. You can do the same at the pin on the computer. You can run a jumper wire from battery positive to get closer to the computer. Then do the same, touch the wire with one hand and touch the back-probe pin in the computer connector. Then if you get a signal, you know there's an open somewhere in the wire.
To further test the circuit. You can do the same at the pin on the computer. You can run a jumper wire from battery positive to get closer to the computer. Then do the same, touch the wire with one hand and touch the back-probe pin in the computer connector. Then if you get a signal, you know there's an open somewhere in the wire.
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tsuami1
Discovery II
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08-28-2014 07:03 PM