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Fuel Mixture Lean (P0171) after 'Fuel System Treatment'?
Took car to wallymart. Got oil change and 'fuel system treatment', which involved them putting some 'stuff' in the fuel tank and in the engine area. They said it might run rough and stumbly for a bit after the treatment.
Started the car and it died 3-4 times. Idle was really low and dying. But it got better and I drove home. Now have P0171 code (fuel mixture too lean). It has been a week and I'm on another tank of gas now. Not sure if I should wait it out, try some seafoam, replace the fuel filter, get a mechanic, or what.
2006 Toyota RAV4. Vehicle had no problems before the 'fuel system treatment'.
I didn't bother checking the hoses, but of course they left a breather hose disconnected (great, easy fix). I hooked it back up and reset the check engine light. Took for a test drive. But P0171 popped back up. Not sure if it is going to take some time for the computer to readjust or what.
2 Answers
- thebax2006Lv 74 years ago
You let the high school drop outs working there play with your car?!!
Go to an auto parts store and have them clear the codes and see if they reset.
Source(s): Mitsubishi Master Tech - Anonymous4 years ago
The 15 year old boy they had working on your car left another hose off or a clamp loose somewhere related to the intake. Take the car to the dealership, have it repaired and give the bill to Walmart.
Lesson learned?
