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Message: <blockquote data-quote="Chevy2005" data-source="post: 22378" data-attributes="member: 12149">Hi there, Still having problems.. I pulled the map sensor out and it was dirty with oil, so I cleaned it very well and put it back in. It did seem to run a little better but still didn’t fix the problem. It’s reading 12 inHg on my scan tool. I checked the fuel pressure and it’s at a constant 55-60 with key on and at idle. I took a look at my fuel trims on it aswell and there is one odd ball. Both of my stft are at 0 but ltft 1 is at -3.9, but the ltft b2 is at 25% and seems to stay there. From what I’ve researched the 25% is not an ideal number to be having. Not sure if that is a o2 senor problem and what one it would be to cause only one bank to have a high fuel %. Any ideas? Thanks</blockquote>