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Stl-986 · 11-10-2021, 11:21 AM

1st....get the correct o2 sensors. You can get them on Amazon. Using the generic ones that crimp are known to cause issues.

Also, it helps to post the actual codes that are in the computer.

how many miles on the plugs?

What are you using to get the fuel trims? Standard obd readers are going to most likely give you the wrong pid for those and not be correct. Seen it myself using Torque. Correct ones can be seen in durametic/pwis. Fuel trims are going to be a symptom of your issue so I wouldn't bother looking at them for now, deep rabbit hole there.

With what you describe it sounds like an O2 issue and/or a vacuum leak.

11-10-2021, 11:21 AM	#1
Stl-986 Registered User Join Date: May 2017 Posts: 1,180	1st....get the correct o2 sensors. You can get them on Amazon. Using the generic ones that crimp are known to cause issues. Also, it helps to post the actual codes that are in the computer. how many miles on the plugs? What are you using to get the fuel trims? Standard obd readers are going to most likely give you the wrong pid for those and not be correct. Seen it myself using Torque. Correct ones can be seen in durametic/pwis. Fuel trims are going to be a symptom of your issue so I wouldn't bother looking at them for now, deep rabbit hole there. With what you describe it sounds like an O2 issue and/or a vacuum leak. __________________ 2000 Boxster Tiptronic 2003 Boxster 2003 996 C2 Cab 2002 996 (SOLD) 1986 944 (gone but missed)