P0171 P0174 Lean Banks 1&2 with detonation
#1
P0171 P0174 Lean Banks 1&2 with detonation
Hi, getting some pining at WOT under load. Throwing both codes above indicating lean condition.
Live data on scanner > Both LTFTRM 1 & 2 ~ 13-16 consistently (Lean condition).
Replaced worn hoses to PCV and new PCV .... this helped a lot! The elbow tube was in sorry shape.
Still pings (albeit not as much) and also throws codes (albeit not as much need to really get on it and its hot here in Phoenix)
Looking at my scanner it shows 0.00 for lbs/min on MAF
Checked supply V its OK BUT the signal is not really there (0.08DC to 0.1VDC from 1500 to 2500 RPM). Expected 1VDC to 1.5VDC. The fluke is on the right range and is good, I use it all the time at work.
I think my MAF sensor is shot...what do you think? Anyone had these symptoms and fixed it with a MAF replacement?
I disconnected the MAF to see how it would run and if it would throw codes. It does not throw codes so if its bad the scanner wont help. Cant really say much on how it ran other than the STLFTRM's were lower but it ran poor as compared to having it hooked up.
Live data on scanner > Both LTFTRM 1 & 2 ~ 13-16 consistently (Lean condition).
Replaced worn hoses to PCV and new PCV .... this helped a lot! The elbow tube was in sorry shape.
Still pings (albeit not as much) and also throws codes (albeit not as much need to really get on it and its hot here in Phoenix)
Looking at my scanner it shows 0.00 for lbs/min on MAF
Checked supply V its OK BUT the signal is not really there (0.08DC to 0.1VDC from 1500 to 2500 RPM). Expected 1VDC to 1.5VDC. The fluke is on the right range and is good, I use it all the time at work.
I think my MAF sensor is shot...what do you think? Anyone had these symptoms and fixed it with a MAF replacement?
I disconnected the MAF to see how it would run and if it would throw codes. It does not throw codes so if its bad the scanner wont help. Cant really say much on how it ran other than the STLFTRM's were lower but it ran poor as compared to having it hooked up.
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jwog666
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12-27-2021 08:09 PM