My fuel trims have gone lean over time. I have cleaned the maf sensor and checked the fuel pressure and it's good.
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2002 Chevrolet Camaro Question: running a little lean
Answer #1backyard tech November 25, 2009, 20:40Master
What is the long term & short term numbers?
Replyrich z, November 25, 2009, 22:13Rookie
The long trims are + 6-10 while crusing. The short trims for the driverside can go up to + 12 for a sec. The long trims used to read - while crusing.
Replybackyard tech, November 25, 2009, 22:16Master
Anything below 15% is normal. These numbers are good. You might get them better by doing a complete Fuel Injection Service. If you want to know more about this e-mail me at firstname.lastname@example.org. It's refreshing to read that you know what to look for. E-mail me.