P0171 Diagnostic Trouble Code Discussion for October 2017
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2005 GMC Savana 2500 4.8L Poor Idle Quality, Stall VIN: 1GTGG25V55 P0171: Fuel Trim System Lean (Bank 1). Van came in a few months ago with a very high idle. Cleaned maf, tb, iac, checked for intake leaks etc. Nothing i did helped, so i got a new iac, didn't change, so i start messing with the old one. Plugged it in with it out of the tb and it was moving fine, so... |
October 05, 2017 | |
| 2011 GMC Terrain SLT 2.4L MIL Lamp on VIN: 2CTFLXEC6B P0171: lean. ... in with a p0171 code. long term fuel trims at +35-40 all the time. no vacuum leaks found. pcv works correctly. low side fuel pressure measured correctly and high side pressure shows good on scan data. found a cracked exhaust manifold and thought i had it f... |
October 10, 2017 | |
| 2011 GMC Terrain SLT 2.4L MIL Lamp on VIN: 2CTFLXEC6B P0171: lean. ... in with a p0171 code. long term fuel trims at +35-40 all the time. no vacuum leaks found. pcv works correctly. low side fuel pressure measured correctly and high side pressure shows good on scan data. found a cracked exhaust manifold and thought i had it f... |
October 11, 2017 | |
| 2005 Ford F-250 Super Duty Lariat 5.4L Hesitation, Cuts out VIN: 1FTSW21595 P0171: Lean bank 1. Hi guys, I hope someone can give me some insight on this one. Before cleaning then replacing the MAF I could not duplicate the lean on bank 1&2 codes, now I can replicate them easily. This thing has a severe hesitation, won't get any power or accelerate un... |
October 25, 2017 | |
| 2005 Ford F-250 Super Duty Lariat 5.4L Hesitation, Cuts out VIN: 1FTSW21595 P0171: Lean bank 1. Hi guys, I hope someone can give me some insight on this one. Before cleaning then replacing the MAF I could not duplicate the lean on bank 1&2 codes, now I can replicate them easily. This thing has a severe hesitation, won't get any power or accelerate un... |
October 26, 2017 |
