EGR System Cleaning

From: Bill
Subject: EGR

Bobby,

The OBD II scanner reads a "402" code on my 2002 Lincoln Towncar with a 4.6L engine. The technician said this code meant the EGR valve is letting too much exhaust gas by. Bobby, can I take it off and clean it? I'll do whatever you suggest.

Thank you!

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Bill,

Remove the valve assembly, clean and also inspect the throttle body and the exhaust delivery tube for carbon build-up. If cleaning does not correct, you might consider replacing the valve with a new unit. The EGR System Service is part of our BG procedures, and it’s especially critical on a Ford engine. Visit my 10 Most Wanted Car Killers for more info. Ultimately, you'll want to discuss this with your local BG shop.

Best regards,
Bobby Likis