Diagnostic Diagnostic Trouble Code (DTC): P0518 P0518 code definition If the PCM has registered an inconsistency in the engine idle RPM; the P0518 code will be stored. What the P0518 code means The manufacturer of the vehicle has set an...
Sounds like you have taken a lot of the right steps, but lets go back to the beginning. A P0505 code doesn't necessarily mean the IAC is bad. Specifically it says that there is a malfunction in the idle control...
This may be related to a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at...
This may be caused by many different things such as low fuel pressure, low voltage to the fuel injectors, dirty fuel injectors, a vacuum leak, a faulty Oxygen sensor or a dirty or failing idle air control valve. Any of...
You may have a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle. Since...
Hi, thanks for writing in. This is a sign of a failing idle air control valve (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-idle-control-valve). This is a unit that is located on or near your intake manifold that monitors the air intake as it is mixed with...
A rough engine idle could be caused by a few different things. Misfiring, fuel issues, and engine timing to name a few. The first place I would recommend starting would be the ignition and fuel systems. Have a professional do...
This may be related to a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at...
A rough idle may be caused by many different things such as low fuel pressure, low voltage to the fuel injectors, dirty fuel injectors, a vacuum leak, a faulty Oxygen sensor or a dirty or failing idle air control valve....
This may also be caused by other things such as low fuel pressure or leaking or intermittently working fuel injectors (https://www.yourmechanic.com/services/fuel-injector-replacement). When the fuel pressure is low, it will fail to bring the correct amount of fuel pressure to the...
Unfortunately, this is something that older cars suffer from. Vacuum lines are made of rubber. Over time, the rubber in the engine compartments begins to get hard and brittle. Once this happens it no longer performs its job properly and...
This may be related to a faulty idle air control valve or possibly a throttle stop that may need to be adjusted. The idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) monitors the air intake as it is mixed with fuel prior to...
White smoke is an indicator that the engine is burning coolant. The fact that the engine idles poorly points toward a problem with the cylinder head; most commonly, the head gaskets. When the gaskets fail, a leak between the cylinder(s),...
You may have a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle. Since...
This may be a result of a dirty or failing idle air control valve. The idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds...
When the engine is cold, the engine coolant temperature sensor must be working properly to signal the PCM to enrich the mixture on cold start. If there is a fault with that sensor, you can experience rough idle idle as...
Hi There, As you may know, the Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses this information to adjust...
This suggests a rich fuel condition as evidenced by the black fouled out spark plugs. This can happen for a couple of reasons such as faulty or leaking fuel injectors, or a faulty or dirty idle air control valve. The...
You will need to check the engine intake for vacuum leaks and if not then replace the sticking idle control valve and then relearn the idle by disconnecting the battery and then reconnect after 10 minutes. Start and hold at...
You can try and have the throttle body (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-throttle-body) and idle control valve (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-idle-control-valve) cleaned first and code cleared. If the code returns then you will need to have the computer program updated for this code. There is a technical...
