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1999 Toyota 4Runner Limited 3.4L Hesitation, MIL Lamp on
Posted to Asian Driveability on 8/7/2007 11 Replies

I have two of these [...] doing just about the same thing. This one keeps throwing po172. I have replace b1s1 a/f sensor reading are about .64 at cruising speed. I have cleaned the maf and my ltft has come down to -21.9 from -35. I am not really sure on how th...

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  Related Documents & Media  1999 Toyota 4Runner Limited

 
Message Closed w/FIX

car Vehicle Data

1999 Toyota 4Runner Limited

VIN JT3HN87R9X
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsHesitation, MIL Lamp On
OccursAlways

Trouble Codes

P0172Fuel System Too Rich (Bank 1)
Message Closed w/FIX

car Vehicle Data

1999 Toyota 4Runner Limited

VIN JT3HN87R9X
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsHesitation, MIL Lamp On
OccursAlways

Trouble Codes

P0172Fuel System Too Rich (Bank 1)