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#1
08-27-2009, 12:54 PM
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2000 toyota 4 runner trouble code PO 171
Can anyone tell me what the code means and how to do the repair? My husband is a retired mechanic so we're hoping we can save by having him do it. Thank you for any help.
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#2
08-27-2009, 04:35 PM
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Re: 2000 toyota 4 runner trouble code PO 171
Clean the filament in the MAF sensor or replace the sensor if cleaning doesn't work.
Other less likely possibilities: Vacuum/intake leak downstream of MAF meter Inspect fuel lines for cracks, leaks, or pinches Replace fuel filter Check fuel pressure at the fuel rail Check output of HO2 sensor Check injector performance Check ECT sensor Check PCV valve and hose connections
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