how to test egr function on 1995 Lincoln Town Car

I replaced my egr value.and it still not passing emissions test. how do I test it so I know it is working.

by in Potwin, KS on March 03, 2012
0 answers
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The EGR tube may plug causing the EGR system to not function at all. As a result, engine pinging may be noted and the vehicle can fail mandated emissions testing.