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cls 500 safe to use a car without Secondary Air Pump ?

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Old 04-27-2018, 10:45 AM
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cls 500
cls 500 safe to use a car without Secondary Air Pump ?
is it safe for me to use my cls without the pump ??
it just kept on going when engine off and burnt out
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Old 04-27-2018, 01:29 PM
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1999 E300TD
Yes it is safe,however if you live in an emissions test state----you will never pass the test plus you will notice a performance issue during the warm up phase---don't be FS get it fixed--put your wife to work and have the kids start to mow grass and or deliver papers.
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Old 04-27-2018, 01:32 PM
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when I switch off the engine its still running ,so I think a stuck relay ,where is it located ????
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Old 04-27-2018, 02:02 PM
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1999 E300TD
Post your VIN!
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Old 04-27-2018, 02:15 PM
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cls 500
WDD2193752A0034586
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Old 04-27-2018, 03:34 PM
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WDD2193752A034586 this one
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Old 04-27-2018, 08:23 PM
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You will find the relay and fuse in the right side of the trunk. The holder has two stacked relays, the air pump is the second from the top(K17) and the next lower is the fuse(F82B)
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Old 06-04-2018, 04:46 PM
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problem solved thank you air pump from ebay used ,many models use the same pump
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Old 06-23-2018, 05:46 PM
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Ok another problem ,fuse is ok ,relay is ok , key off and wire for pump still live ? I have 3 pumps still the same all running without key
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