Converting Oil Temp gauge to Oil Pressure Gauge? |
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Converting Oil Temp gauge to Oil Pressure Gauge? |
9144me2enjoy |
Aug 5 2018, 08:34 PM
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#1
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Member Group: Members Posts: 310 Joined: 19-June 18 From: Oregon Member No.: 22,240 Region Association: Pacific Northwest |
1973 Porsche 914 2.0L. I’m removing my Oil Temp Gauge and installing a Oil Pressure Gauge. I installed a 100 psi VDO Oil Pressure Gauge. Do to the size of the new Sender Unit that fits a 100 psi VDO Gauge you cannot just insert it in the same location in the Taco Plate! I was able to drill a 7/16 hole in the same plate and install the new sender unit. I left the original sender unit where it was at and just removed the plug and placed it on the new 100 psi Oil Pressure Sending Unit. On the other end I just plugged the original harness back in the same 3 prong plug in on the back off the new VDO Oil pressure gauge. Sending unit wire to G and the + to fuse box etc. No reading on gauge! What’s wrong. The new sending unit is extended about 1/2” inside. Any suggestions. Thanks
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Mark Henry |
Aug 5 2018, 09:51 PM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Oil pressure...from the pump...there's no oil pressure in the sump taco plate location.
It has to be installed in the oil circuit, in an oil galley. Most use the oil idiot light sensor location, but to do this you need an extension hose. You can get one from VDO, some use a grease gun whip but it's not really the correct thread. Either way you have to make a metal bracket to mount the sender somewhere, the body of the sender must be grounded to the engine to work. I also would use a T so you can keep the stock idiot light switch. |
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