How to change secondary air injection system?
- Step 1: Locate the air injection pump.
- Step 2: Remove the serpentine belt.
- Step 3: Remove the hose.
- Step 4: Remove vacuum lines and electrical connections.
- Step 5: Remove the air pump mounting bolts.
- Step 6: Remove the air pump.
- Step 1: Install the new smog pump.
- Step 2: Tighten the mounting bolts.
What does the secondary air injection check valve do?
Secondary air valves are an integral part of the secondary air system. They are fitted between the secondary air pump (1) and exhaust manifold. They prevent pressure peaks in the exhaust flow from damaging the secondary air system and exhaust gas or condensate from entering the secondary air pump.
What is the code for secondary air injection?
Bank #1 is the side of the engine with cylinder #1. For bank #2, see code P0492. Other secondary air injection system trouble codes include P0410, P0411, P0412, P0413, P0414, P0415, P0416, P0417, P0418, P0419, P041F, P044F, and P0492.
When to replace a secondary air injection pump?
If you’ve already experienced engine stalling, poor acceleration, and a check engine warning light, then you need to have the secondary air injection pump checked out immediately. If it is proven to be the problem, have it replaced by a certified mechanic.
Why does a secondary air injection system turn itself off?
This system pumps fresh air into exhaust system during cold starts to feed oxygen and exhaust gases. This ensures a more complete burn of harmful emissions – hydrocarbons. After about minute, the system turns itself off.
Which is Bank 1 of the air injection system?
Bank #1 is the side of the engine with cylinder #1. For bank #2, see code P0492. Other secondary air injection system trouble codes include P0410, P0411, P0412, P0413, P0414, P0415, P0416, P0417, P0418, P0419, P041F, P044F, and P0492. Symptoms of a P0491 engine code may include. Potential causes for a P0491 may include: