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testing a relay

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niles
Posts: 8
Joined: 19 Mar 2010, 12:19
Year and Model: S-70, 1998
Location: Denver, CO
Has thanked: 1 time

Post by niles »

The check engine light on my 98 S-70 is on and code indicates a problem with secondary air emmissions system. Removed the air pump, repl 2 yrs 10K mi ago, and it is OK, no rust. Powers up OK. How would I test the air pump relay? Niles

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