 Help with an oil pressure gauge |
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| dgraves |
  Nov 13 2016, 05:46 PM
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#1
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1974 914 2.0  Group: Members Posts: 180 Joined: 6-June 16 From: Montana Member No.: 20,076 Region Association: Rocky Mountains  |
My 1974 914 came with a 5 gauge instrument dash from a mid-70's 911. The wiring wasn't perfect by all means, but all gauges were working including my Oil (Druck) Pressure gauge, which I really like. Unfortunately, my secondary mechanic was working on my center console wiring and somehow screwed up my Oil (Druck) Pressure gauge on my dash. This is a combo Oil Pressure and Oil temp gauges. Now when I turn on my car the Oil (Druck) Pressure Gauge reads 5. I've since had my wiring redone correctly, but the Druck Pressure Gauge still reads at 5. My ace mechanic seems to believe the gauge was damaged or shorted out. Can this be fixed or do I need a new gauge?
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| 914Sixer |
Nov 13 2016, 05:56 PM
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#2
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914 Guru Group: Members Posts: 8,906 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region 
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Do you have a double pole sender? One wire should be for the gauge and the other for the warning light. Gauges rarely go bad, usually wiring or sender is the culprit.
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| dgraves |
Nov 14 2016, 09:03 AM
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#3
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1974 914 2.0 Group: Members Posts: 180 Joined: 6-June 16 From: Montana Member No.: 20,076 Region Association: Rocky Mountains |
I honestly don't know if I have a double pole sender. I'll have to check it out. Thank you.
QUOTE(914Sixer @ Nov 13 2016, 04:56 PM)  Do you have a double pole sender? One wire should be for the gauge and the other for the gauge. Gauges rarely go bad, usually wiring or sender is the culprit. |
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| stownsen914 |
Nov 15 2016, 01:10 PM
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#4
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Senior Member Group: Members Posts: 916 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
Pressure gauge pegging at 5 usually means bad wiring. Check that that wires are connected properly and that your ground is good.
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| stownsen914 |
Nov 15 2016, 02:12 PM
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#5
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Senior Member Group: Members Posts: 916 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
Actually, is it reading at 5, or is the gauge pegged at the top (which is probably above 5)? Does it do this only when the engine is running, or even when the key is on (engine not running)?
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Posts in this topic
dgraves Help with an oil pressure gauge Nov 13 2016, 05:46 PM
dgraves When I turn the key on it tops out just above 5 an... Nov 15 2016, 09:57 PM dgraves Ok...Thanks, I'll have another look.
Pressu... Nov 15 2016, 07:14 PM |
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