I hooked my gauges up a few weeks ago using a sandwich plate adaptor that goes between the filter and block. I installed oil pressure and oil temp. I started the car and all was perfect. Oil pressure when cold is about 70 psi and when warm at idle its about 35 psi. I took the car for a drive and while driving oil pressure is normal but the oil temp shoots up very high. When I come to a stop the oil pressure is 0 yes ZERO! When I get rolling again everything is back to normal but both gauges somtimes jump up and down. I thought this was a ground problem so I tried a new ground and its still the same. The only thing I can think of is the sensors have to ground to the block. But the sandwich plate is machined aluminum. Would this effect the ground at all? I dont think I have a oil temp or oil pressure problem. Before the gauges I drove the car a lot in heavy traffic and havent had any problems. Any ideas? Im stumped

 

bump

 

STFU Noob!!!!

J/k

How does the sandwich plate seal to to the block? I am guessing there is an "O" ring that may be isolating the electrical circuit gound. What spacer/senders are you using?

 

lol Yeah thats what I was thinking. Theres a rubber O ring. I think I might but a ring connector on each sensor then ground it to the block. Heres the one Im using.

http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWN%3AIT

 

What gauges are you using? Do the sensors have one wire or two? If you have the two wire sensors, then its no the ground, but if you have a one wire sensor, then it most likely is the ground. You can attach a stripped wire to the body of each sensor with a hose clamp then ground it and you should be fine.

 

Yeah its just a one wire sensor. Ill try the ground and get back to ya guys! Thanks for the advice guys.

 

Sorry don't have any advice on the wiring of the gauge, just a comment on oil pressure.

At idle, at speed, during hard acceleration, when hot or cold, I see a pretty wide variation in the oil pressure. The oil temp is something else, it's pretty constant.