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Post by clements408 on Mar 17, 2024 2:13:35 GMT
New member, 2008 Audi S5, 94K miles. Had misfire codes, added new coil packs, no change. Just performed carbon cleaning, new injectors, plus took upper intake apart, cleaned oil up, re sealed, assembled, added oil/air separator to new PCV.
No more misfire codes but now have P0087, Fuel rail pressure too low. I used the live data on ODBeleven, channel 106, was able to see the fuel rail pressure but the electric fuel pressure (from tank) showed 0%, never increased even on the Freeway accelerating. I have replaced the in tank fuel pump 14 months ago with an $80 knock off, 1 year warranty, so concerned it may have gone bad. Car struggles to start for a few extra seconds but drives fine once it is started. Has anyone experienced 0% utilization from the live scan? I need to confirm if it's the low or high pressure pumps, these things are expensive.
Thanks
John
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Post by my4321 on Mar 19, 2024 12:21:01 GMT
Ouch, that would have cost quite a bit. Are you still seeing ad-hoc misfires when charting? I think I've done to the conclusion ad-hoc misfires is normal and only CEL when it hits certain threshold
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