Full Lean in Closed Loop Operation?

[WithHonor037]

No updates yet as all 3 of my kids, wife, and myself have been sick. Hoping to get back at this thing bright an early tomorrow. If anyone has any other suggestions on top of what's already been offered it would be greatly appreciated.

My first steps are going to be double checking my fuel pressure, pulling the pump and checking the strainer, and I saw another guy with an SR found his issue to be his alternator so I'll check that out too although my voltage gauge reads just above 14v running. Maybe the amperage is too low though. Thanks again to everyone for they're .02


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[Kingtal0n]

Originally Posted by WithHonor037

No updates yet as all 3 of my kids, wife, and myself have been sick. Hoping to get back at this thing bright an early tomorrow. If anyone has any other suggestions on top of what's already been offered it would be greatly appreciated.

My first steps are going to be double checking my fuel pressure, pulling the pump and checking the strainer, and I saw another guy with an SR found his issue to be his alternator so I'll check that out too although my voltage gauge reads just above 14v running. Maybe the amperage is too low though. Thanks again to everyone for they're .02

Sick you say? Now thats more my area than cars. What sort of sick? Sounds viral with the way it spread so easy. Hopefully self limiting and I wish you all a speedy recovery. Wipe everything you touch down and wash or replace everything you can. Even in the presence of antibodies against viruses the chances of infection are still there, and go up as you encounter more of them in your environment.

before you go pulling things apart I suggest you simply verify the O2 sensor is doing it's job. If you have to, buy a cheapy A/F gauge from autozone and wire it up to watch closed loop in action. Even with a bum fuel pump it should still kick into closed loop operation and flip the gauge back and forth. Even with a low voltage (no alternator). 99% of the time, a lean closed loop operation is due to a bad O2 sensor. Especially if the car runs fine in open loop.