Baro on 5.4
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Baro on 5.4
Working on an 07 F250 4WD 5.4l gas motor. would barely run when I got it 4 months ago. Major vacuum leak on intake manifold which I replaced and a couple minor vac leaks fixed. B1S1 O2 sensor was biased lean and replaced which was a huge improvement but it is struggling at idle. my scan tool shows a baro of 86 kPa. which means I am on the moon. Mitchel's diagram shows a baro switch under the dash but what I found with the same 3 wire in a round 4 pin socket is not a sensor or anything. it looks like a holder or something like that. Fuel trims are ridiculously high. I have a PID for BARO so I am assuming I have a Barometric Absolute pressure sensor. or am I wrong? Baro could be a calculation possible from something else. I know Baro effects diesel engines but not sure on gas.
Where is the baro reading coming from and why is it so low? Thanks in advance.
Where is the baro reading coming from and why is it so low? Thanks in advance.
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Teager
1999 - 2016 Super Duty
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Dec 19, 2012 12:53 PM
