Oil Pressure Gauge Pinned
04-08-2011 | 02:43 PM
#12
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Joined: Aug 2005
Posts: 6,306
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From: Between A Womans Leggs in IL
Fixx
I have a 29' Fountain with twin 454 Mag MPIs and my oil pressure gauges stay pinned as soon as I turn the key. I changed the oil pressure sending unit, but the gauge still goes from zero to pinned as soon as i turn the key. I am thinking there is a bad ground, but I am wondering if anyone else has had this problem before and what they did.
04-08-2011 | 08:25 PM
#15
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Joined: Oct 2005
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From: Millstadt, IL
I agree, I have seen gages float before, seeking a ground. When you turn different things on or off the gages would change. But to peg out as soon as you hit the key would almost have to be a dead short. Very strange both engines would be doing the same thing. Take a meter and see if the sender wire is shorted, at both ends. I believe the senders are 0-88 ohms, get some resistors and connect them from the sender wire to ground.
04-09-2011 | 01:33 AM
#17
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From: Omaha Ne
mrfixxall you are the bomb!!! I have seen all kinds of wiring clusterf@cks in boats & cars. If both guages are doing the same thing & senders & guages are the same, stereo? speakers? good question I have seen with custom vans they screwed the panels & such right through wiring harnesses & with boats the pounding they take people put longer screws in the speakers that is why I mentioned sharp edges or studs
04-10-2011 | 12:43 PM
#19
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From: NJ
