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Old 06-26-2016, 11:56 PM   #11
nobox351y
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Join Date: May 2016
Location: LeRoy
Posts: 69
Re: 87 Burb 4.8 swap

Right now I think things are not talking to each other correctly. I have one o2 sensor reading lean consistenly, which I guess could be an intake gasket or vac leak on that side. The other is reading slightly rich but neither are switching like I would expect them to.

Anyone have a data log of what 02 sensors and fuel trims are supposed to look like?

Thanks for the suggestion. Ill look into that too. I would expect that to cause rich readings.
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