engine misfiring
engine misfiring
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Joined: Jan 2004
Posts: 13,851
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From: SW Va
Welcome to FTE.
Kinda sounds like maybe the O2 sensor for that bank has gone to sleep.
How many miles on this O2 sensor???? If it's OEM, or has around 100K, it's probably time for replacement & I'd replace both banks before cat sensors.
Have you hooked up a scantool that'll read it's PID to the computer, to see if it's trying to switch????
Do you have a exhaust manafold leak upstream of that banks O2 sensor, if so it'll adversely affect it's calabration.
If you have a cooling system gasket leak that'll cause that bank to ingest coolant into the combustion chamber, it'll put the O2 sensor to sleep.
If thats so, fix the leak, before replacing the O2 sensor, or the coolant will just kill the new sensor.
Some thoughts for pondering, let us know what you find.
Kinda sounds like maybe the O2 sensor for that bank has gone to sleep.
How many miles on this O2 sensor???? If it's OEM, or has around 100K, it's probably time for replacement & I'd replace both banks before cat sensors.
Have you hooked up a scantool that'll read it's PID to the computer, to see if it's trying to switch????
Do you have a exhaust manafold leak upstream of that banks O2 sensor, if so it'll adversely affect it's calabration.
If you have a cooling system gasket leak that'll cause that bank to ingest coolant into the combustion chamber, it'll put the O2 sensor to sleep.
If thats so, fix the leak, before replacing the O2 sensor, or the coolant will just kill the new sensor.
Some thoughts for pondering, let us know what you find.
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New User
Joined: Jan 2009
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I used a scantool from snap-on and it said code 172 EGO not switching lean exhaust bank 1. No coolant or exhaust leaks but I did recently change the cam position sensor but like I said I am only getting trouble code 172. There are 124,500 miles on the truck and I think they are original.
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New User
Joined: Jan 2009
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It's an old snap-on scanner, I don't think I have that option. But I ran all scans again today and the error code 172 went away. Now I'm getting code 214 cid error. Think I need to adjust the cam position sensor.
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