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Old 04-28-2013, 11:35 AM   #1
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Dash cluster problem

Hello All!!! New to posting on the forum, but have learned a lot from this sight. We have a 2005 holiday rambler Neptune, with an Isb 300 cummins, the oil pressure gauge is pinned right over passed 120 psi on the gauge, I know the motor does not make that much pressure, I have changed the sending unit, is there more than one?, also when driving the rpm needle twitches and is not a smooth steady sweep, the engine is smooth but needle, not so much. Any info would be helpful

Thanks Tony

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Old 04-28-2013, 12:59 PM   #2
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Just in any troubleshooting, I'd actually verify pressure to know for sure pressure is not that high. If the sending unit is new, I'd suspect either wiring harness, or actual gauge.

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Old 04-28-2013, 04:09 PM   #3
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Since you have more than one instrument acting up, reseat all connectors several times and check for good grounds. Re-tighten them too.
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Old 04-28-2013, 07:36 PM   #4
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Originally Posted by Dunner View Post
check for good grounds. Re-tighten them too.
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Old 04-29-2013, 04:11 PM   #5
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Old 04-29-2013, 04:51 PM   #6
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Thanks for the input, where would I look for the grounds.....under dash?

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