[V8] Oil pressure

[Scott Phillips]

Hey Ed - I can't find where but when my V8 was doing something similar to yours I was in search of the OP sender too. If my mind isn’t remembering the wrong thing here the Porsche 928 uses a similar sensor. 

https://www.paragon-products.com/Oil-Pressure-Sender-p/pp928.606.203.05.htm 

also summit racing has a good selection of VDO senders. With some 'simple' diagnostics you can see if it is the gauge or not. Typically the OP circuit and sender is a resistance device, meaning the more pressure the more resistance it puts out. The VDO unit is a 10-180 Ohm unit. Using a tool like this: 

https://www.ebay.com/itm/Resistance-Decade-Box-1-through-9-999-999-Ohm/183742690154?hash=item2ac7eaf36a:g:89UAAOSwY4tazRVP

You could easily generate a 'signal' to the gauge to see if it is functioning or not. And if it is, you'll know the sender failed. 

Good Luck. 

Scott.