Why is my secondary air system monitor not ready?
Determined I needed to replace my air pump, did that, and car is still failing due to the secondary air system monitor not being ready. I have no codes still and am super frustrated and unsure what to do.
Can a secondary air injection monitor be set?
It’s not a guarantee that the injection monitor will set, but it’s at least an indication that the secondary air injection system is at least functioning at the most minimal level and not triggering any air injection trouble codes.
Can a car pass with an incomplete monitor?
Note that a car can pass with some incomplete monitors…a maximum of one on 1999 and earlier cars, and only one ( The Evaporative System monitor) on model year 2000 and later gasoline powered automobiles. All monitors must be complete on 1998-2006 diesel powered vehicles. Any two (2) monitors may be incomplete on 2007 and newer diesels.
How is the misfire monitor used by the PCM?
The misfire monitor is the method used by the PCM to determine whether the engine is malfunctioning to the point where it is releasing excess pollutants into the air. The PCM keeps track of the crankshaft speed after the combustion of each cylinder.
Determined I needed to replace my air pump, did that, and car is still failing due to the secondary air system monitor not being ready. I have no codes still and am super frustrated and unsure what to do.
What are the readiness monitors for Mercedes Benz?
The two readiness monitors that seem to be the most stubborn to complete are: Secondary Air Injection and Catalyst (Catalytic Converter). We located a Mercedes Benz Service Bulletin (S-B-14.00/17) that may be helpful.
It’s not a guarantee that the injection monitor will set, but it’s at least an indication that the secondary air injection system is at least functioning at the most minimal level and not triggering any air injection trouble codes.
What is the recirculated air button on a Mercedes?
This is as far as the cylinder will go without cranking the engine. Press and hold the defrost and recirculated air buttons simultaneously. The defrost button has three lines going through it, while the recirculated air button has a picture of a car with a curved line through it.
How old does an air conditioner coil have to be?
Air conditioners last anywhere from 10 to 12 years. That said, if your AC is nearing 8 years old, replacing just the evaporator coil would be like putting a brand new engine into a dying car—it’s just not worth the money. Plus, if you were to replace the coil, it’d have a near-death partner to work with.
What happens if a Mercedes ignition coil fails?
Failed ignition coils will cause engine misfire. The car will run rough and the engine may shake extensively. Check engine light will in most cases turn on. Replacing Mercedes Ignition Coil Packs is easy.
How long does an AC evaporator coil last?
Air conditioners last anywhere from 10 to 12 years. That said, if your AC is nearing 8 years old, replacing just the evaporator coil would be like putting a brand new engine into a dying car—it’s just not worth the money.
What happens if you fail an emissions test?
If you happen to live in a state which requires emissions testing, you will fail the test if your secondary air injection pump is bad. A faulty secondary air injection pump will cause problems for the air-to-fuel ratio in your internal combustion engine.
How does the status of your emission systems become ” ready ” again?
How the status of your vehicle’s emission systems becomes “ready” again: Driving the vehicle in a normal fashion may allow your vehicle’s to become “ready”. However, for certain emission systems and certain vehicles, the status returns to “ready” only after driving the vehicle a specific way.