Fault Code 4 Keeps Coming Back w140

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Fault Code 4 Keeps Coming Back w140

08-04-2007, 05:34 PM

JimF

'94 S500: only 793 sold!

Join Date: Mar 2001

Location: San Diego, CA

Posts: 1,933

Quote:

Originally Posted by jimSF

Ok will check operation of the air pump as soon as I locate it!

It's on the left side as you look from the front of the car below top cover.

You should be able to hear it as it pumps extra air into the exhaust; it's pretty noisy.

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'94 S500 Cpe

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