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#2
10-16-2006, 09:45 PM
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Re: P0443
sounds like the purge valve is not working. or short in wires. might be able to help with a location if you tell me the year of car.
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Disclaimer: I am not perfect, i may be wrong in my advice from time to time. Also note that any advice given is as is with no warranty whatsoever, and i have zero liability if you get hurt for not being safe while working on your vehicle. 
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#3
10-17-2006, 08:58 AM
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Re: P0443
your profile shows your car is a 01 impala. The purge control valve/solenoid is located in the following locations:
3.8 vin-K= just in front of upper plenum, slightly toward passenger side 3.4 vin-E= just behind throttle body on drivers side of upper plenum check the wiring for loose/dirty/corroded connections and hard plastic vacuum lines for cracks/burnt areas/obvious problems before replacing the valve itself.
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 Still waiting for the "good old days" I'll get to bore my future grandchildren with!
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#4
10-17-2006, 09:21 AM
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Re: P0443
I agree it sounds like a flaky purge solenoid.
The DTC is a Cannister Purge Solenoid Circuit Fault, meaning electrical related. The P0443 DTC sets because the output driver has failed the electrical integrity check. The output state is invalid. Always a good idea to troubleshoot the problem first before replacing parts. I believe the poster has a SII 3800.  Purge Solenoid Location SII 3800
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