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Jeep Wrangler YJ
YJ General Discussion
Fan Clutch And Cooling Issues
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<blockquote data-quote="machoheadgames" data-source="post: 431911" data-attributes="member: 18789"><p>You’d have to test the socket while someone else turns the key, since it only turns the fuel pump on for a second when the key is turned on. It would actually be kind of hard to test that because the pcm operates the relay by grounding it. A better way to test would be hold the relay with your fingers while someone else flips the key. If you felt the relay click then you would know power is going to the pump, and then if the pump is making no noise, of course a new pump would be needed.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 431911, member: 18789"] You’d have to test the socket while someone else turns the key, since it only turns the fuel pump on for a second when the key is turned on. It would actually be kind of hard to test that because the pcm operates the relay by grounding it. A better way to test would be hold the relay with your fingers while someone else flips the key. If you felt the relay click then you would know power is going to the pump, and then if the pump is making no noise, of course a new pump would be needed. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Fan Clutch And Cooling Issues
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