The air pump should run and the vacuum gauge should read manifold vacuum green arrow. Most vehicles have a recommended air pressure on a decal inside the driver's door frame. Thanks for your great website. The sizes of the nuts and bolts we give may be different from what you have so be prepared with different size sockets and wrenches. If there is 2 powers then you need to get to the top of the fuel tank and see if power is getting to the pump. This series of conditions all have to be met for the driving test readiness check to be completed sometimes it can take a week of driving for the flag to disappear. Tracking number will be uploaded to eBay within 24 hours after shipment.
A new secondary air pump from Bosch will cost in the order of £300 for the part alone and maybe £35 for the correct relay. The tracking number will be updated on eBay in 24 hours after the shipment. It is worth checking the vacuum actuation components and piping with the pump motor housing removed, any hoses that are split or look bad should be replaced. Never work on your vehicle if you feel the task is beyond your ability. The hose from the solenoid to the check valve red arrows is switched manifold vacuum. You can swap it with one of the others as it has 2 for trailer turn signals whitch in most cases wont be needed unless you use your van for towing.
Don't get power at the terminal that gets to pump. We have used the eBay compatibility list as a guide for buyers to use, but the eBay data system is not accurate and incomplete sometimes. They specialize in engine management, starters, alternators, spark plugs, oxygen sensors, and fuel delivery and injection. You are best to identify this hose before working in the area — In my view it is best left undisturbed! Need to buy parts for this project? This function usually only runs for a short time, when first starting the engine. Once the work is completed, leave off the plastic engine cover until you have started the car from cold, you can then hear the fan running and monitor at what point it shuts down 45-90 seconds after cold start if it continues to run much beyond this time there is likely to still be a problem somewhere and you are best to disconnect the motor until it is further investigated as it is a high power, high rpm motor that is not at all rated for extended use beyond its designed short duty cycle. Alternatively, your compressor unit might be faulty or the belt that turns the unit may be slipping or broken if it is uses a separate belt.
If replacing the relay does not fix the issue, run a system test using a Mercedes-Benz scan tool. Never had a problem with that on other cars so never even knew to check it. April 19, 2018 Followup from the Pelican Staff: No air coming from pump when running, either the impeller is faulty or the inlet is blocked. We are also constantly updating our Bosch parts selection to give you the best possible selection of parts. What do I do if I have not received my order? Relays in this circuit as well as ones in the Air-matic circuit should, in my view, be changed as a service item every 50k or so miles to attempt to prevent costly pump repairs.
If something seems different, let us know and share your info to help other users. What do I do if my product is faulty? But this last time everything seemed to work and still had p0410 coming back. If this doesn't repair the problem, then you might have to replace the air compressor, as they sometimes do set up. As it is most probable that the pump failed because of the relay it should be changed as a matter of course in all cases as we would not want the new item damaged in the same way as the old one — just for the sake of a new relay! If it is not specified, please provide us your shipping address and zip code via eBay message. This is the second of the review book series and each year around July a new review book will be published. Though this noise should not be loud. Once the payment is cleared, we cannot amend any item s , quantities, or add or remove items.
Blue Oval Certified Master Technician. The secondary air system is prone to faults that illuminate the check engine light. Secondary air injection is a vehicle emission control wherein fresh air is injected into the exhaust stream to allow for a more efficient catalytic converter. Take a look at --the12volt. People have wrongly assumed that the secondary air system only operates at start up, this is not strictly true.
Our vehicle may vary slightly from yours as models do change and evolve, as they grow older. Mercedes — Secondary air injection pump. Figure 10 Secondary air pump check valve solenoid testing: Start by removing the right side vacuum hose from the solenoid and connecting it to a vacuum gauge red arrows. Removal is done by removing the single reverse torx set screw from the aluminium saddle plate that clamps the pump between the front of two cylinder heads. Do you have questions or want to add to the article? The power at the pump will be there for only a few seconds once the key is turned on and then will drop off.
This information is only a summary. The cover is held on by four metal clips that grab onto rubber mounts. I have repaired multiple S Class W220 sec air sys problems where the pump replacement and relay have done the job. Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. Check if the pump is full of water.