Question about Buick LeSabre

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I have a dtc p0171 on a1997 buick lasabre with a v6 3.8 engine and i don't know what the problem is

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P0171 is a lean condition. Most likely cause is a restricted fuel filter.

Posted on Jul 27, 2009

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A 2002 2.5L Buick, mileage 138000km. Engine fault light, DTC code P0171 what is matter?


According to the experience in the repair, fault code P0171 is used in the fuel system, such as a fuel injector or fuel filter clogging, fuel pressure problems.
The fuel adjustment values measured by GM TECH2, Fault code P0171 is Buick car of a multiple fault. Fault car most can be cleaned by the injector, replacing the fuel filter troubleshooting, also have individual vehicle is to solve the problem by replacing the air flow meter.

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My 95 buick lasabre just clik and don't crank we replace battery and started


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Where is the pcv valve located on 94 buick lasabre?


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Starter on 1998 buick lasabre


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1 Answer

Code po 171 system lean on bank one what would cause this and what would the solution be on a 2002 buick lasabre


DTC P0171 and Po174 indicate air/fuel ratio is correcting rich for an overly lean condition. You could have several things causing this 1. fuel system malfuntion 2. EGR system malfunction 3. Air intake vacuum leak 4. Engine oil level to high 5. Incorrect cam timing 6. Restricted air cleaner 7. Faulty PCV system 8. Excessive internal engine wear.
Sorry I could not be more specific. Check for the easy things in this list. Most of the time one of the o2 sensors in bank one has failed and not reading correctly. Same on the 02 Lesabre.

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