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SVTPerformance's Chain of Restaurants
Road Side Pub
2004 Escape P0443
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<blockquote data-quote="286rocks" data-source="post: 16346979" data-attributes="member: 111895"><p>I had a similar code (it actually might have been the same) pop on a 4.0l ranger a few years ago. It was pointing to the purge valve being faulty. </p><p></p><p>I looked at buying a new one but there was no way in god damn hell I was spending $40 to keep a few penguins from melting. After taking the solenoid apart I found there was a Flyback Diode across a coil, which acts as an electromagnet to open and close the valve. </p><p></p><p>Of course it was burnt out, so I just scavenged another one from an old tube TV, soldered it on, and slapped the valve back together. Worked like a champ. </p><p></p><p>The diodes only job is to protect the PCM from small voltage spikes as the field collapses from being deenergized, however, if it's failing or failed then the valve can do some pretty screwball crap, or not work at all.</p></blockquote><p></p>
[QUOTE="286rocks, post: 16346979, member: 111895"] I had a similar code (it actually might have been the same) pop on a 4.0l ranger a few years ago. It was pointing to the purge valve being faulty. I looked at buying a new one but there was no way in god damn hell I was spending $40 to keep a few penguins from melting. After taking the solenoid apart I found there was a Flyback Diode across a coil, which acts as an electromagnet to open and close the valve. Of course it was burnt out, so I just scavenged another one from an old tube TV, soldered it on, and slapped the valve back together. Worked like a champ. The diodes only job is to protect the PCM from small voltage spikes as the field collapses from being deenergized, however, if it's failing or failed then the valve can do some pretty screwball crap, or not work at all. [/QUOTE]
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SVTPerformance's Chain of Restaurants
Road Side Pub
2004 Escape P0443
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