P0171 Diagnostic Trouble Code Discussion for September 2018
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2010 Chevrolet Equinox LT 2.4L Poor Idle Quality, Cuts out, Misfire VIN: 2CNFLEEW0A P0171: testing and results. ... block). Customer choose to go with new reman engine. We got engine installed but now has the P0171 code. Cant seem to find no vacuum leak. Kinda wondering if the intake might be warped letting it leak. Fuel trims are short 32 long 40 and fuel pressure ... |
September 12, 2018 | |
| 1997 Toyota 4Runner Limited 3.4L MIL Lamp on VIN: JT3HN87R5V P0171: Fuel System Too Lean (Bank 1). We have a high mileage 4Runner throwing P0171 - lean fuel trim. Customer has been battling this problem for awhile now. checked fuel pressure 47psi at idle, spec shows 34-45 psi. 18 in vacuum at idle, plugs, wires, fuel injectors, MAF (oem), O2 sensors, al... |
September 19, 2018 | |
| 1997 Toyota 4Runner Limited 3.4L MIL Lamp on VIN: JT3HN87R5V P0171: Fuel System Too Lean (Bank 1). We have a high mileage 4Runner throwing P0171 - lean fuel trim. Customer has been battling this problem for awhile now. checked fuel pressure 47psi at idle, spec shows 34-45 psi. 18 in vacuum at idle, plugs, wires, fuel injectors, MAF (oem), O2 sensors, al... |
September 20, 2018 | |
| 2005 Ford F-150 STX 4.6L MIL Lamp on VIN: 1FTRX12W35 P0171: B1 Lean. ... and a slight idle disturbance at times. Only the P0171 was present. B1 LT trim was 26% and ST was hovering around zero, B2LT was around 8% and ST also around zero. A smoke test revealed the intake was leaking at the #4 runner to head. Sold the gasket ... |
September 25, 2018 |
