Quote:
Originally Posted by thstone
The secondary air pump will turn on under two situations: (1) At cold start to reduce emissions, and (2) to test the pressurization integrity of the SAI and fuel system.
The pressurization test usually happens the first time that the car is at idle as the engine warms up. However, this test can be delayed substantially if the car never has an opportunity to idle. For example, the car is started and driven directly onto the highway without any stoplights, this will delay the pressurization test until there is an opportunity to idle.
What CEL code is being stored? Please read it out and post it. Your car might be failing the pressurization integrity test.
|
Thank you very much thstone, the codes I get are P0410 and P1411. Now I am sure that the pump is not starting as I validated today that the noise I am hearing is the engine cooling fan, not the secondary air pump. I have to determine if I have a fault pump or if something else is creating the problem.
Threaded Mode
