Lean Mixture Code: Bank 1&2

[robb15033]

I get a check engine light once in a while, it only pops up when I'm sitting still at idle, either at a stop light or parking lot ect.. Both tune files (87oct & 93oct) produce the codes. I replaced the primary O2 sensors both banks. It doesn't pop up frequent enough to make any connections to the cause. I'm going to get some MAF sensor cleaner, saving up for a fuel pump. I've gone a little more than a week now without it, just trying to be proactive and eliminate it completely. Thanks.

 

[vermilion]

gasket or vac leak.

 

[robb15033]

OK, Thank you. I'll seek it out.

 

[CC'S95GT]

Have the codes read.They will be stored for a short period of time whether or not the CEL is on.Yours is OBD2, so just take it to your favorite parts house

 

[robb15033]

Thanks, but like I mentioned above- It happens with the SCT tune files for the 93 and 87. I clear them as they pop up. I have driven a hundred miles this week in all types of situations, it hasn't popped up again. Might have had to settle in the parameters once I had the two new O2 sensors put in. i can handle the codes with the SCT X-Cal.