Burning rich
Thread Starter
Pro
Joined: Sep 2004
Posts: 505
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From: Guntersville Alabama
Burning rich
I have been burning rich on the right hand side for some time now. The honey comb seems to be gone on the cat and I am getting a code H64 intermittently. A code 64 means it is burning lean but the sesnsor is covered in black sutt. Can a faulty O2 sensor cause the ECM to add fuel? Also, is there a method of checking the sensor once it is out of the car? Thanks.
93cruiser
93cruiser
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
I had the same problem you describe. It turned out to be a faulty O2 sensor. The soot, in and of itself, doe's not necessarily mean it is bad, but does tell you that your rich. And yes, a faulty O2 sensor can feedback info. that cause one bank to run richer...
Take a look at my plugs, and guess which bank was running rich:
Take a look at my plugs, and guess which bank was running rich:
Last edited by MikeC4; Jun 24, 2006 at 03:45 PM.
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Originally Posted by 93cruiser
A code 64 means it is burning lean but the sesnsor is covered in black sutt. Can a faulty O2 sensor cause the ECM to add fuel? Also, is there a method of checking the sensor once it is out of the car? Thanks.
93cruiser
93cruiser
Or try switching the right to left and vise versa to test before buying a new one.
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Originally Posted by 93cruiser
Thanks, for the info. I am going to build an xpipe and drill out the broken studs for the rest of the weekend.
93cruiser
93cruiser
