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P0170 Diagnostic Trouble Code Discussion for November 2008

Fuel Trim Lean Or Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0170
Help Request Posted
1999 BMW 328i 2.8L Excessive Emissions
I have this bimmer with no vacuum to the fuel pressure regulator. It appears that some one has connected the plastic tube from the fuel regulator to the pcv/vent valve so there is no vacuum source. I cannot find the vacuum diagram in small data so I would like...
November 12, 2008
1999 Subaru Impreza L 2.2L Hesitation, MIL Lamp on VIN: JF1GC4357X
P0170: Fuel System Too Rich Or Too Lean (Bank 1). ... giving a P0170 code intermittently. I have went through the tests on Alldata and everything checks out fine, fuel pressure ,vacuum, ECT all good. I suspected MAF but I am in spec at idle and 2500 and I am hitting around 66 gps at 6000 RPM . I don't know if...
November 12, 2008
1995 Lexus ES300 3.0L Misfire, MIL Lamp on VIN: JT8GK13T8S
P0170: Bank 1 lean. ... running. Codes: P0303 and P0170. I first swapped coil positions to see if the misfire would follow the coil. It did not; still #3 misfire. I then looked at spark plugs and found single electrode plugs. I replaced plugs with NGK Laser Platinum twin electrod...
November 15, 2008