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air pump

The air pump supplies the catalytic converter with extra oxygen so that it can efficiently catalyze any unburned fuel. On start up, the catalytic converter is cold and requires some help to quickly get up to temperature allowing it to...

There is probably a filter in the pump and yes the filter could block flow. However, before you consider a plugged filter, inspect the check valves; they will commonly get plugged up or stuck. The pump flow is minimal and...

Hello - your truck has a secondary air injection pump (https://www.yourmechanic.com/question/i-have-a-vacuum-leak-in-my-secondary-air-injection-system-the-vacuum-hoses-were-replaced-and-engine-light-went-back-off-for-abou-by-david-h), which is powered by an electric motor. It is located under the hood, and is power up in the "Run" ignition switch position. I suspect what you are hearing...

Hello - based on your symptom information, your Jeep has the air suspension (https://www.yourmechanic.com/question/air-suspension-problem), and the noise you hear is air leaking, with the compressor continuing to run, draining your battery. This could be due to a failed switch in...

Hi there. If you have had a rodent living in your engine compartment, there could be multiple issues as rodents tend to chew through just about everything. It is possible that the rodent could have damaged the vacuum pump, but...

Hi there - the P0420 (https://www.yourmechanic.com/article/p0420-obd-ii-trouble-code-catalyst-system-efficiency-below-threshold-bank-1-by-jamahl-walker) indicates a catalytic converter that is not working as efficiently as it should. This could mean a clogged converter, or weak oxygen sensor (probably the pre-converter O2 sensor). The P0411 (https://www.yourmechanic.com/article/p0411-obd-ii-trouble-code-secondary-air-injection-system-incorrect-flow-detected-by-spencer-clayton) code indicates a...

Hi - the clogged intake is a long-term "carbon clogging" from the turbocharger/EGR valve operation. The manifold must be removed, disassembled, cleaned and reinstalled. Tedious, and requires moderate DIYr skills. Unfortunately, this is not a service YourMechanic offers at this...

Hi and thanks for contacting Your Mechanic. If your engine light came on for the secondary air pump sensor, then it is possible that the secondary air pump (smog pump) has failed. The pump has oil in it and if...

The secondary air injection pump (https://www.yourmechanic.com/services/air-pump-replacement) is well known for making noises such as this on all cars that use them. It only runs when the motor is below a preset temperature. So the longer you let the car sit,...

Hello! There is likely an issue wth the oil pressure sensor causing the flashing Oil Light. I suggest having a technician test the sensor by the use of a multimeter. Also, be sure to have the oil level checked; a...

If the engine mounts are faulty, the drive axles will operate at the wrong angle eventually causing premature wear-out of the axles so it is important to get the mounts replaced. If you would please refer to YourMechanic's motor mount...

The pump will become loud when it is under pressure and lifting a load. If the pump is quiet and you hear a hissing sound around where the pump is, either the pump is leaking or the main supply hose...

Hi there - the P0491 (https://www.yourmechanic.com/article/p0491-obd-ii-trouble-codes-secondary-air-injection-system-insufficient-flow-bank-1-by-valerie-johnston) and P0492 codes reflect a problem with the secondary air injection pump (https://www.yourmechanic.com/question/secondary-air-pump-by-pat-v) mechanism - not enough air flow is detected. This problem could be the pump itself (check fuses and relay), the check...

Billing question sent to CS for the cost of replacing the leak detection pump on a 2005 jeep liberty.

Hi there. All parts on a car are designed to have a longevity date to them, but it is normal for parts that are more than 5 years old to fail. The vacuum pump and centrifuge could be leaking for...

Hi there. When the air pump is working and the engine is running fine and then when the air pump is turned off and the engine idle starts to hunt, then there may be water in the air pump or...

Hi - the P2432 problem code you have is an indication that the secondary air pump (https://www.yourmechanic.com/article/how-long-does-an-air-pump-last) pressure is low. This is an emissions device, which injects fresh air into the exhaust to allow burning of any remaining fuel in...

Hello. The A.I.R. system is an emissions system that is designed to inject air into the exhaust manifold to help with the combustion of any unburned fuel before it reaches the catalytic converter, resulting in cleaner emissions. In order to...

The air pump sucks in outside air in the lower front fender area and the car may have sucked in water while the pump was running. The only way to stop water from entering the air pump is to not...

The air injection pump is the most common failure of the air injection system on this vehicle. The system would need to be checked to make sure the pump is the cause of the noise. I recommend you have a...