Question about 2000 Lincoln LS
P0175 indicates an overly rich condition on bank 1, and with the air delivery codes posted, this may resolve itself when the issue causing the other two codes is addressed.
P1504 and P1507 indicates problems with the Idle Air Controller valve. The Ford manual suggests to check the resistance across the two terminals on it. The IAC valve is under the plastic engine cover. I circled it in red on an image here for you.
Posted on Jun 01, 2011
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Posted on Jan 02, 2017
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