Packard Forum Index » V-8 (1955-56)

Is there a special way to get the oil pressure sender out? My pressure is dipping down to zero when I stop my car and stop light ETC. I want to take a pressure check but have been unable to figure out a way to get the sender out. When the car is moving the pressure is between 11 and 1 o'clock. Thanks for any help....

As I recall, the sender has a square shank under the unit. put the appropriate size wrench (1/2??) on it and wrench away

Dear Don1260:

According to the manual, oil pressure gauge should read around Half at 40mph using 20w oil. At idle (especially if set below 500 rpm) oil pressure is likely to fall below 10psi which will be very low on the gauge.

If your lifters are staying quiet at sustained idle then you probably are doing okay.

You can make a tool to get at the sender by making a long crow foot out of a combo wrench. Then cut a slot in a socket to fit over the box end and use a T-handle. Those senders can be a bear and can break off in the block so be careful.

Good luck with your car.

Thanks for the replies! It was a 9/16. Last time I saw one was 1965 or so....didn't remember how it looked underneth. It was a bear getting out. Had to unhook a couple of things to get to it. I finally used one of those stubby wrenches and it worked good. Thanks again.....