Oil Pressure Gauge Doesn't Work

MVG•GT93 · Dec 14, 2015

Oil pressure gauge isn't reading anything. It hasn't moved since I got the car started again. How can I diagnose the problem?

liljoe07 · Dec 14, 2015

Take the wire off the sender, and ground it. It should peg the gauge if the gauge and wiring are correct.

MVG•GT93 · Dec 14, 2015

liljoe07 said:
Take the wire off the sender, and ground it. It should peg the gauge if the gauge and wiring are correct.

With the car started or off?

liljoe07 · Dec 14, 2015

It should work with the car off, but key in the run position.

MVG•GT93 · Dec 14, 2015

Ok it worked

liljoe07 · Dec 14, 2015

If the gauge worked, then you just need to replace the oil pressure sender that is screwed into the side of the oil pressure port extension.

MVG•GT93 · Dec 14, 2015

That's what I thought thanks so much for the help my friend!

liljoe07 · Dec 14, 2015

Any time!

MVG•GT93 · Dec 14, 2015

I put the new one in and the guage doesn't move when I start it now

liljoe07 · Dec 14, 2015

Are you sure you getting a good connection on the sender? What was the part number of the sender? Is this for the 93 foxbody?

MVG•GT93 · Dec 14, 2015

Yes it's for the 93 foxbody but I just dropped in a 94 cobra motor. Took out the old sender and went and picked one up from O'Reillys and looks the same. How would I know if I'm getting a good connection? I think the part number is 2-8141

liljoe07 · Dec 14, 2015

Just make sure the connection is real tight where the sending wire connects to the sender. Do you have a volt meter?

MVG•GT93 · Dec 14, 2015

Just took off my valve cover on the driver side to see if I'm getting oil and its practically dry. So I turned it over let it run for a second and still no oil. So I think I have no oil pressure.

liljoe07 · Dec 14, 2015

Well that's not good. I assumed at first that the engine had already been ran. Does it have oil in it? Not trying to insult you, but happens sometimes.

MVG•GT93 · Dec 14, 2015

I understand. It's definitely got oil. The motor hasn't ran for a couple months. It's out of a 94 cobra and the motor was built by summit. I took out the distributor to prime the oil pump and that little key that goes to the center of the distributor is gone. Was there last night when I put the new distributor in.

liljoe07 · Dec 14, 2015

MVG•GT93 said:
I understand. It's definitely got oil. The motor hasn't ran for a couple months. It's out of a 94 cobra and the motor was built by summit. I took out the distributor to prime the oil pump and that little key that goes to the center of the distributor is gone. Was there last night when I put the new distributor in.

Key? You mean oil pump shaft?

MVG•GT93 · Dec 14, 2015

Yeah the oil pump shaft sorry

liljoe07 said:
Key? You mean oil pump shaft?

liljoe07 · Dec 14, 2015

That sucks, its in the oil pan! And thats your oil pressure issue.

MVG•GT93 · Dec 14, 2015

So I gotta drop the oil pan and order the ARP driveshaft? Is it broke or did it just fall in there and I can just put it back without getting a new one. Or do u recommend I order the ARP?

liljoe07 · Dec 14, 2015

Someone probably installed the shaft from the top. So when the distributor was removed, it came out of the pump and into the pan. The shaft is supposed to be installed from the bottom when the oil pump is put it. There is a retainer clip that keeps the shaft from being pulled out of the pump whenever the distributor is removed. ARP shaft is a nice investment.

Oil Pressure Gauge Doesn't Work

Similar threads

Privacy & Transparency

Privacy & Transparency