Reported F32 and gauges not functioning properly

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Taboma
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Joined: Thu May 23, 2019 7:35 pm

Reported F32 and gauges not functioning properly

Post by Taboma »

I recently repowered my 1979 F32 from 305 mercs to 350 Merc Bluewater inboards. However once in the water we found that oil pressure gauges and water temp gauges were functioning incorrectly. Water temp was reading north of 220 and oil pressure was north of 80 psi. In actuality oil psi was marginally under 40 psi and water temp at 140 at ideal and climbed correctly when revving up engine.. We have checked all the wiring, checked the harness and all is good. We ran a temp wiring to bypass the harness and found the same readings. Both upper and lower gauges malfunction the same. We installed new water sensor with no improvement. We installed new oil pressure sensor which reads correctly in the salon but not bridge. Our next step is to try new gauges but that just seems wrong that the gauges on the bridge and salon all go south. Fuel and amp gauges al function properly in salon and bridge.
Has anyone experienced this issue after a Repower? Any assistance would be greatly appreciated.
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prowlersfish
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Re: Reported F32 and gauges not functioning properly

Post by prowlersfish »

Your boat cane with AC/Delco gauges, they will not work with any other sender than the old AC senders. So you could install your old senders or install new gauges. If you go the new gauge route the upper and lower must match. Also, the senders on the engine must be for dual gauges or they will read incorrectly. If someone has replaced the gauges and you no longer have the AC ones your engine could have the single gauge units


This will be helpful.

viewtopic.php?f=1&t=10222
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
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prowlersfish
2024 Gold Support
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Posts: 12645
Joined: Sat Nov 05, 2005 6:56 pm
Location: Lower Chesapeake Bay ,Va

Re: Reported F32 and gauges not functioning properly

Post by prowlersfish »

Beacon has replacement gauges with the matching senders.
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
Taboma
Registered user
Posts: 2
Joined: Thu May 23, 2019 7:35 pm

Re: Reported F32 and gauges not functioning properly

Post by Taboma »

Thankyou very much
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