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Old 01-18-2011, 01:27 PM
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JimF JimF is offline
'94 S500: only 793 sold!
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,929
I recall a '96 SL500 that wouldn't set the EGR portion of the three [Catalyst, EGR System, and Secondary Air System ] monitors, if I remember correctly. Try as they might, it wouldn't come "ready". This went on for weeks.

Finally had to remove one head (left side I think?) b/c of just enough carbon build-up in the small passages to cause this puppy to never come "ready". There were no codes!

Remind me to NEVER buy a '96 - '99 MB . .
Regards . . . . JimF
'94 S500 Cpe

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