secondary air pump keep running

2002 MERCEDES BENZ A160
101,250 MILES
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COLIN81
  • MEMBER
  • 1 POST
after i started my car in the mornings the secondary air pump use to go on for a min or so but now it keep on running until my batt goes flat can i just diconect it and what is it function will it harm my car
May 4, 2013 at 3:53 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
it has a function and it add oxygen to the exhaust when cold for burning rich fuel in the exhaust.

the control for it whether the relay or the pcm is keeping it on and needs to be checked for the failed part.

do not disconnect it.

Roy
May 5, 2013 at 2:47 AM
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