Where is the secondary air injection system located?
Table of Contents
Where is the secondary air injection system located?
The secondary air injection pump is usually located on the engine or at least in the engine bay. It can sometimes be hidden deep into the engine bay, but mostly you will find it installed pretty visible on the engine.
What are the symptoms of a bad secondary air injection pump?
One of the first symptoms of a bad or failing smog pump is a rough running engine. When a smog pump fails the finely tuned air-fuel ratios can be upset, and it will negatively affect the performance of the engine. The engine may have trouble idling, and may drop in engine speed, or stall when the pedal is pressed.
Can you remove secondary air injection pump?
Secondary air injection exists purely for emissions purposes. It’s not even like EGR where it can cause some performance issues and deleting it can give you any sort of gain. The only reason to “delete” secondary air is if your pump failed and you don’t want to pay for a replacement.
How do you fix a secondary air injection system malfunction?
How to Fix
- Replace both the air pumps and the one-way check valve.
- Try and clean the air pump and test it. The one-way air check valve must be replaced as well.
- Replace the inlet hose of the air pump.
- Replace the fuse of the air pump (you can find it under the hood)
What controls the secondary air pump?
The active secondary air system usually consists of an electric pump (see figure), the control relay, a pneumatic control valve, and a combination valve. The system is controlled by the engine control unit. The valve opens and the vacuum from the intake pipe operates the combination valve.
Can a bad secondary air pump cause a misfire?
A faulty MAF sensor will cause your secondary air pump not to switch on. this can cause a rich condition, which can cause misfires, etc…
Can you drive with a bad secondary air pump?
While failing a smog test is a serious enough problem, the real danger from a bad air pump is the possibility that reduced engine performance and driveability could cause be hazardous to your driving safety.
How do I know if my secondary air pump is working?
The secondary air pump has to start audibly after a cold start of the engine. Start vehicle engine. If the power supply of the secondary air pump is fine, but the secondary air pump runs with a scraping, whistling or scratching noise or not at all, the secondary air pump is to be replaced.
What is the prime source of problems in secondary air systems?
CAUSES OF A FAILURE: CAUSE OF FAILURE A faulty pump is generally the most frequent cause of the system failing.
How do you test a secondary air injection?
The secondary air valve can be quickly inspected in an easy way:
- Loosen the connecting hose on the secondary air non-return valve leading to the secondary air pump.
- If there are deposits on this side of the valve (finger test, see Fig.
- Inspect the secondary air pump and replace it if necessary.
How do you fix a secondary air pump?
How do you fix a secondary air injection system malfunction?
- Replace both the air pumps and the one-way check valve.
- Try and clean the air pump and test it. The one-way air check valve must be replaced as well.
- Replace the inlet hose of the air pump.
- Replace the fuse of the air pump (you can find it under the hood)
What causes a secondary air injection system malfunction?
CAUSES OF A FAILURE: CAUSE OF FAILURE Faulty ground and voltage supply can also cause the pump to fail. Blocked or leaking lines can also cause the failure or malfunction of the control or combination valve, resulting in the failure of the secondary air system.