Can someone help me figure out my VAG readings? I think an O2 sensor is going south.
03-24-2005, 06:00 AM
#1
AudiWorld Super User
Thread Starter
Can someone help me figure out my VAG readings? I think an O2 sensor is going south.
I've got a 98.5 2.8qm, GIAC chipped.
I've always got the long "term fuel trim" codes 17535 & 17537; 17549 & 17547 for as long as I can remember.
I've got lamda reading of -2.3
My O2 sensors readings have the following ranges:
O2 Sensor Bank1 -2.0 to -4.0
O2 Sensor Bank1 -6.3 to -11.0
My Mass Air Flow is at 3.4gal (just changed last summer)
These are all taken at idle. I don't have a
laptop.
Do these readings look normal for a chipped car?
I've always got the long "term fuel trim" codes 17535 & 17537; 17549 & 17547 for as long as I can remember.
I've got lamda reading of -2.3
My O2 sensors readings have the following ranges:
O2 Sensor Bank1 -2.0 to -4.0
O2 Sensor Bank1 -6.3 to -11.0
My Mass Air Flow is at 3.4gal (just changed last summer)
These are all taken at idle. I don't have a
laptop.
Do these readings look normal for a chipped car?
03-24-2005, 06:25 AM
#2
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You should log 3rd gear pulls...idle is kind of hard to judge.
I'm working out issues myself, but you numbers look fine on bank 1, I think... check around to look for the right a/f long-term fuel trims. To give you an idea (I have a T-28) and I'm around -.02 and -3.2. When I was super rich I was running 25 for fuel trims.
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