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Trying to get it mostly right the first time: A 5.9 Magnum and 46RE swapped, Tummy Tucked Daily Driven Jeep TJ
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<blockquote data-quote="Dan_Goodwin" data-source="post: 1572915" data-attributes="member: 4960"><p>I've got to do some homework on that issue - I'm not sure what's considered normal for a 5.9 but I have reasons to think I might have an issue with the engine or the gauge / sending unit. </p><p></p><p>I want to install a mechanical gauge inline with the sending unit to verify what the gauge is reading is in fact correct. Assuming it is, the gauge reads 40 PSI +/- at idle until the engine gets up to operating temperature and then drops to 20PSI, which would lead me to believe I the motor has some wear on it. If I'm, for example, getting off the interstate and come to a stop the gauge will bottom out to near 0 PSI and the 'Check Gauges' light will come on. Its never made any noise to indicate its running dry. The engine currently has the spec'd 10W-30 oil it it with some of the Lucas molasses looking sauce in it to thicken it up, which has seemed to help. The next oil change it'll get some 15W or 20W to see if that makes a difference.</p></blockquote><p></p>
[QUOTE="Dan_Goodwin, post: 1572915, member: 4960"] I've got to do some homework on that issue - I'm not sure what's considered normal for a 5.9 but I have reasons to think I might have an issue with the engine or the gauge / sending unit. I want to install a mechanical gauge inline with the sending unit to verify what the gauge is reading is in fact correct. Assuming it is, the gauge reads 40 PSI +/- at idle until the engine gets up to operating temperature and then drops to 20PSI, which would lead me to believe I the motor has some wear on it. If I'm, for example, getting off the interstate and come to a stop the gauge will bottom out to near 0 PSI and the 'Check Gauges' light will come on. Its never made any noise to indicate its running dry. The engine currently has the spec'd 10W-30 oil it it with some of the Lucas molasses looking sauce in it to thicken it up, which has seemed to help. The next oil change it'll get some 15W or 20W to see if that makes a difference. [/QUOTE]
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Trying to get it mostly right the first time: A 5.9 Magnum and 46RE swapped, Tummy Tucked Daily Driven Jeep TJ
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