Toyota 4Runner Engine Lean

Browse Toyota 4Runner Engine Lean questions and answers. Choose a question that matches your symptoms.

2 discussions

P0171 Engine Running Too Lean

1999 TOYOTA 4RUNNER

I Have Been Getting The Code P 0171, "engine Running Too Lean" On My 1999 Toyota 4runner (3.4, 6 Cyl.) Over The Past Year. When...

7 ANSWERS

Asked by sararadka

DTC 25 Mixture Control Continuesly Lean; What Should I...

1995 TOYOTA 4RUNNER

Just Gave The 4runner A Tune Up Consisting Of Plug&wires, Distributor Cap&rotor, New K&n Air Filter, Three New Belts, Oil Change W/filter...

1 ANSWER

Asked by joebox82

Browse other repair topics

Browse by repair topic

Backfire Buck Burning Oil Click Compression Coolant In Oil Hard to Start Hesitate Idle Erratic Idle High Idle Low Idle Rough Knock Lean Loud Low Power Misfire Noise Not Cranking Over Not Running Oil Leak Overheat Ping Poor Mileage Pop Revs Up Rich Runs Hot Runs Rough Shakes Sludge Smell Sputter Stall While Driving Stall at Idle Surge Tap Threw a Rod Tick Vacuum Leak Vibration Whistle Will not shut off

Can’t find your issue?

Ask a new Toyota 4Runner question