Oxygen Sensor Code
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Joined: Jun 2006
Posts: 151
From: Somerset, Ky
Oxygen Sensor Code
1994 z28
Mid Length headers and open y-pipe
CAI
Aftermarket elbow
58 mm throttle body
th350
Problem: Recently my car has been missing under load and at idle after about 15 minutes of run time, but works itself out of missing if the engine is allowed to continue running.
Recent maintenance/troubleshooting: Plugs were replaced recently, before the issue began.
-Fuel pressure is around 40 psi and idle, even when the engine is missing and rises with the rpm's when revved in park.
-Unplugged MAF to see if problem was still present, and the problem was still present when the MAF was unhooked.
-Scanned for DTCs, codes came back 44 and 48.
Any help/insight is appreciated!
Mid Length headers and open y-pipe
CAI
Aftermarket elbow
58 mm throttle body
th350
Problem: Recently my car has been missing under load and at idle after about 15 minutes of run time, but works itself out of missing if the engine is allowed to continue running.
Recent maintenance/troubleshooting: Plugs were replaced recently, before the issue began.
-Fuel pressure is around 40 psi and idle, even when the engine is missing and rises with the rpm's when revved in park.
-Unplugged MAF to see if problem was still present, and the problem was still present when the MAF was unhooked.
-Scanned for DTCs, codes came back 44 and 48.
Any help/insight is appreciated!
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