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SoguRacing · 05-24-2008, 03:46 AM

manifold "vacuum" at idle should be 17-21 inches of mercury. yours says pressure so that would be negative 9.8 right? bad intake valves/vacuum leak? your short term fuel trim is rich that's why your short term fuel trim is -5.% you want those to hover around zero. O2 B1,S2: 680-740 mV i think bank 1 sensor 2 is bad. it should read min voltage of <200mv - >800mv but less than 1 volt. your range is way off thus your ecu is getting a mis calibrated signal and making you run rich.

05-24-2008, 03:46 AM	#8
SoguRacing Post Whore! Join Date: Nov 2007 Location: (714) Age: 39 Posts: 2,967 Trader Rating: (23) Rides Gallery: SoguRacing Feedback Score: 23 reviews	manifold "vacuum" at idle should be 17-21 inches of mercury. yours says pressure so that would be negative 9.8 right? bad intake valves/vacuum leak? your short term fuel trim is rich that's why your short term fuel trim is -5.% you want those to hover around zero. O2 B1,S2: 680-740 mV i think bank 1 sensor 2 is bad. it should read min voltage of <200mv - >800mv but less than 1 volt. your range is way off thus your ecu is getting a mis calibrated signal and making you run rich. __________________ Pre Tune Checkup! Compression,LeakDown,Vacuum Test $80. Cams Install: $180