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2G No oil pressure?

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kcd

Proven Member
143
5
Apr 15, 2014
Fremont, Nebraska
Hey guys, back again with another problem.

So I have a digital Glowshift oil pressure gauge. Usually, I have about 20 psi at idle. But all of a sudden today, it dropped down to 0. I have plenty of oil. I didn't make any changes to the car. This just happened randomly.

Any ideas? Thanks!
 
Well, I assume it is just my gauge. In my driveway, A LOT of water accumulates in the dips. And it's been raining a lot here lately. And the sensor is sitting at the bottom of the engine, so I'm assuming it just gets absolutely soaked. But I don't have a mechanical gauge to double check.
 
Most likely it got unplugged either the wire to the gauge or to the sender wherever you have it connected.
 
But once I start accelerating, the pressure goes up. So it's definitely connected. For some reason, it's just reading like 20 psi less than it usually does. That's why I'm concerned.
 
But once I start accelerating, the pressure goes up. So it's definitely connected. For some reason, it's just reading like 20 psi less than it usually does. That's why I'm concerned.

Oh, well that would have been nice to know :D

I would pick up a mechanical gauge (rent one from advanced auto or something) to verify what's going on.
 
To second that, on my track car the oil pressure gauge stopped working due to sensor failure. Asked my sponsor shop about it and they mentioned it's extremely common as many aftermarket electronic oil pressure sensors are very fragile, and the engine vibrations of any car, especially a super stiffly braced track car's, can lead them to failure in short time, even just a couple years (which is all mine lasted). They recommended like 1990dsmkid to remote mount with some padding (dampening material) to get longer life.
 
Thanks guys. I ended up just putting in a mechanical gauge. Things seem to be fine. Must've just been my sensor like you guys said. Thanks for the help!
 
Why are some people so against mechanical gauges? I understand there's a chance that the oil could leak if the tubing ever kinks or anything, but as far as I'm concerned, it seems like mechanical gauges are a lot more reliable and accurate. But that's just from my recent experience. So far so good though.
 
Last edited:
Why are some people so against mechanical gauges?.
If the line breaks or something fails with the gauge, you then have hot oil shooting into the cabin.

Anyway, I have an Autometer Z-series electrical oil pressure gauge with a remote mounted sender. It's somewhat on the slow side as far as response (not sure if it's because it like 10 years old now or what), and the number indicators make it hard sometimes to get an actual reading. I bought a $9 water/liquid pressure gauge and T-fitting at Home Depot basically to get an exact reading at idle. In addition to knowing I'm actually getting 12-13 psi, I've noticed that the needle on this gauge shoots up rather quickly revving the engine by hand. The electrical gauge is much, much slower to respond. Might be a dying sender, but I've also debated replacing the electrical gauge with a mechanical gauge using a braided line.
 

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