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E-Class (W211) 2003-2009

secondary air pump issue

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Old Sep 19, 2018 | 06:07 PM
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2003 E500
secondary air pump issue
Pump was not working it seized up i opened it up cleaned and lubricated it tested it 12v and it worked. 40A fuse was bad so i replaced it and waited for the car to cool down. Upon starting it few seconds in fuse brakes i tried another one it also brakes. Could this be short somewhere or is the pump just bad
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Old Sep 20, 2018 | 12:22 PM
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Did you check the relay? If not, try google searching for the secondary air relay. I believe the part is made by Hella.
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Old Sep 20, 2018 | 01:01 PM
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2003 E500
I tried the relay on to my other w211 and it works so it's not the relay. Pump does not attempt to do anything fuse just pops. I am thinking to take the pump from my other e500 and see if it will work
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Old Sep 20, 2018 | 02:35 PM
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Good thinking. Won't cost you anything to test the other air pump. By any chance, would you happen to have the part numbers for the small vacuum hoses that connect the two valves?
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Old Sep 20, 2018 | 02:56 PM
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Originally Posted by bruce24
I am thinking to take the pump from my other e500 and see if it will work
https://www.pelicanparts.com/techart...ts_Testing.htm

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Old Sep 20, 2018 | 03:00 PM
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Originally Posted by F1Fan
would you happen to have the part numbers for the small vacuum hoses that connect the two valves?
211.070 (e500) which item(s)...



Last edited by konigstiger; Sep 20, 2018 at 03:02 PM.
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Old Sep 20, 2018 | 03:43 PM
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2003 E500
Originally Posted by konigstiger
211.070 (e500) which item(s)...


As always thank you ok it is the pump took one from my other car and it works I am thinking this pump has a short somewhere Thank you for your help
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Old Sep 20, 2018 | 11:18 PM
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Can you let me know the part number for item 101, 107, & 119?
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Old Sep 21, 2018 | 11:29 AM
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Old Sep 21, 2018 | 06:39 PM
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Excellent! Much appreciated!
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