both O2 sensors and maf codes at the same time???
Thread Starter
Drifting
Joined: May 1999
Posts: 1,697
Likes: 1
From: Joliet IL
I'm getting the check engine light every time I start my car now. I checked the codes and it shows both of the O2 sensors and a code for the MAF. After I clear the codes and restart the car, both of these codes come back and stay. Could the O2 sensor be causing the MAF codes? The car also seems to be cutting out at higher RPMs.
Melting Slicks
Joined: Dec 2000
Posts: 2,719
Likes: 59
From: Fremont Oh
maduraj,
I would say that the MAF sensor is causing the o2's to trip a code as well if it is sending incorrect signals to your engine and the engine is running too rich or too lean for the "calibrated" readings that the ECM is expecting, then they would probably trip a code as well...
You may try simply disconnecting the MAF sensor cable, try starting the engine, let it run and see if the o2's still trip a code, I would say probably not...
You didnt say what year your car was, I had similar problems on my 87... it was the maf sensor was bad..
feel free to email me if you need more help..
Mo
I would say that the MAF sensor is causing the o2's to trip a code as well if it is sending incorrect signals to your engine and the engine is running too rich or too lean for the "calibrated" readings that the ECM is expecting, then they would probably trip a code as well...
You may try simply disconnecting the MAF sensor cable, try starting the engine, let it run and see if the o2's still trip a code, I would say probably not...
You didnt say what year your car was, I had similar problems on my 87... it was the maf sensor was bad..
feel free to email me if you need more help..
Mo
