I have a p0140 code I have replaced the pump,relay, and one sensor. on 2003 Chevrolet Corvette

Can you tell me where the check valves are located ?

by in Plymouth, MA on September 24, 2012
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1 answer
ANSWER by , September 25, 2012
there is a long diag process for this code related to o2's seek the proper diag and save time and money instead of repl parts