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Jeep Wrangler YJ
YJ General Discussion
Help! 95 wrangler 4.0 shakes/revs when idling
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<blockquote data-quote="DOWNS" data-source="post: 438726" data-attributes="member: 21038"><p>I mean at this point if the only thing not replaced is the ECU then what's the cost of that compared to a whole engine? </p><p></p><p>Also when's the last time the battery cables have been replaced? Grounds cleaned? All of these sensors run on a 5 volt reference signal so clean grounds and good cables are very important. I've seen what externally looked like good cables be so corroded internally they wouldn't pass enough power to turn the engine over. Probably a lot of sensors have been replaced over the decades due to bad grounds.</p><p></p><p>I replace mine on a 5 year cycle as preventative maintenance.</p></blockquote><p></p>
[QUOTE="DOWNS, post: 438726, member: 21038"] I mean at this point if the only thing not replaced is the ECU then what's the cost of that compared to a whole engine? Also when's the last time the battery cables have been replaced? Grounds cleaned? All of these sensors run on a 5 volt reference signal so clean grounds and good cables are very important. I've seen what externally looked like good cables be so corroded internally they wouldn't pass enough power to turn the engine over. Probably a lot of sensors have been replaced over the decades due to bad grounds. I replace mine on a 5 year cycle as preventative maintenance. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Help! 95 wrangler 4.0 shakes/revs when idling
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