Car Repair World

Engine Stalls, Misfire Code, & Cylinder Misfire Troubleshooting Car Problems The engine may be stalling because it isn’t getting enough throttle opening. The cause is often a problem in the idle air control system. In many instances, stalling ends up being an idle control motor at its limit or a failed motor. Engine Stalls (Check Engine Light May or May Not Be On) Stalls typically occur when the engine is idling or slowing. If the Check Engine Light comes on, you may find any of the following codes: P0505 to P0509 idle control circuit codes P0335, P0336, P0337, P0338, P0339 crankshaft position sensor codes P0171, P0174 lean fuel condition codes P0400 to P0409 EGR related codes The engine may be stalling because it isn’t getting enough throttle opening. The cause is often a problem in the idle air control system. Other possibilities include a dirty throttle body, vacuum leak, incorrect ignition timing (retarded), bad gas (water or other contamination), an A/C ...

Lean Exhaust Code Repair P0171 P0174 OBD Code Troubleshooting Step by step guide on how to repair automobile lean code problems, this article pertains to most vehicles. Helpful Information Common Misconception: When an engine misfires, the cylinder runs lean, not rich, this is because the air to fuel ratio favors air by 14x. Therefore, an engine must be running properly without  cylinder misfires  to avoid lean mixture codes. Optimum fuel to air mixture (14 to 1) is called  stoichiometric , which means: chemically balanced. The engine fuel management system is controlled by the computer and various sensors which feedback data. Best Practices Check all vacuum hoses when replacing a single failed hose. Check connecting hoses to such items as a breather tube or EVAP system Difficulty Scale: 4 of 10 Tools and Supplies Needed Code Reader Flashlight Wrench set Socket Set Protective gloves and eyewear Begin with the vehicle parked on flat ground ...