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Jeep Wrangler YJ
YJ General Discussion
Nuther gauge question
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<blockquote data-quote="Gilaguy23" data-source="post: 431264" data-attributes="member: 19498"><p>I finally dug into my oil and volt gauges to see whats going on. I pulled the cluster twice now, checked,cleaned and tightened things up by tweeking the tabs a bit on the light holders and male harness plug. The oil pressure gauge works now, but when I turn on the headlights the oil pressure reading drops around 8-10 psi. Turn them off and back to 40 at 2500rpm. I never noticed before the temp gauge slightly goes up when I turn on the headlights. This leads me to a ground issue, however Ive OHM'ed the black lead which OHMs to 0 resistance. Oddly enough I found the PO or somebody used a scotch connector tapping onto the ground #3, and there is also evidence of one once on the black/white which I believe goes to the ECM. Im not sure what "normal" oil pressure is at idle and at say 2500 rpm but I seeing almost 0 and 40 on the upper end. I dont have much faith in these stock gauges for some reason. The temp,gas and clock work fine or seem to anyhow.</p></blockquote><p></p>
[QUOTE="Gilaguy23, post: 431264, member: 19498"] I finally dug into my oil and volt gauges to see whats going on. I pulled the cluster twice now, checked,cleaned and tightened things up by tweeking the tabs a bit on the light holders and male harness plug. The oil pressure gauge works now, but when I turn on the headlights the oil pressure reading drops around 8-10 psi. Turn them off and back to 40 at 2500rpm. I never noticed before the temp gauge slightly goes up when I turn on the headlights. This leads me to a ground issue, however Ive OHM'ed the black lead which OHMs to 0 resistance. Oddly enough I found the PO or somebody used a scotch connector tapping onto the ground #3, and there is also evidence of one once on the black/white which I believe goes to the ECM. Im not sure what "normal" oil pressure is at idle and at say 2500 rpm but I seeing almost 0 and 40 on the upper end. I dont have much faith in these stock gauges for some reason. The temp,gas and clock work fine or seem to anyhow. [/QUOTE]
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