Ok. A week or two ago, I started up the car for a trip. The oil pressure gauge sat at an even 0. No bumping, and the car was running fine..the OMP IS pumping oil. But er, the gauge isn't working!

While my car is down for work right now, I want to get all the tid-bits fixed. How does the oil pressure guage work..and how do I fix this?

If this has been covered before I apologize, I just thought of this as I'm about to head out. And, it could be a good review for all you people, so you don't forget! Yes!

Thanks~
James

 

There's the sending unit right below the oil filter (that round looking thing below it near the heater core line), check and make sure the line is still connected.

Oh, and your OMP has nothing to do with the oil pressure.

 

i would never trust that lame pos oil pressure system. its lame. i would get a reall gauge and a realsender and have a stand alone setup.

 

Yeah... What Rat said. Be warned though, the 'sending wire' is a brittle little wire, with a relatively loose clip. Pop it off, (if it's not already off) clean out any gunk and hook it back up--might just solve yo' problem.

 

Heh, standalone is on the way, very soon. Megasquirt

 

ya can't even fix your oil sender and you're goin standalone!?

 

Well uh, the "round, single-wired plug" is what I've been told long before, and it's been cleaned and stuff and it's securely on..

So yeah, I can't fix my oil sender. Haven't worried about it, as the car has been down for work, lol..

 

Ya damn n00b, yer gettin in over you're head! Figure out how to troubleshoot basic wiring before ya go playing with some college EE kids spare time in a can on your car!

 

I'm not sure if it's a common failure when the sending unit are on the car, but I've had like 5-6 of them fail if they're off the car (and exposed to air?) for over a couple weeks... Do you have an extra sending unit you could swap in to see if it works? Maybe a local friend has one?

 

Well, besides for when I cleaned it (after it stopped working), it has never been off (to my knowledge). So eh..I dunno :|

I'll ask around to see if anyone has one.

And uh, Rat..

I don't think Megasquirt is some "spare-time" thing. I view it for what it is, a standalone, for the price of what most people pay for little objects that can't do half of what it can.

Seriously dude, let's go by grade school saying. If you don't have anything nice to say, don't say anything at all :P. I always see you bashing the Megasquirt, but do you have any reason to..? Have you used one, and did it not work for you? Did it tune worse than an SAFC?

Not even wants to put on a Microtech, Haltech, WOLF, or MoTec on an NA. I don't think such precise, EXPENSIVE tuning is worth it, on a car that really doesn't require it..

 

Yeah, you might as well. IIRC there's also something that can go wrong in the cluster itself, but I'm not *positive* and I have no experience with that, so I can't help you there. All the other gauges work though?

It takes about 2 minutes to swap the sending-unit. I believe it's a 14mm, open-socket that you'll need. It is kind of in an akward spot, but it's worth throwing another one on there just to see. Then again, I seriously had like one million of them just laying around in random places all over my garage, so I'd just keep sticking 'em in until one of them worked. So I didn't have to "source" a good one, lol. (after rebuilding)

 

Thanks Erik :P Will do something! And yes, all the other gauges work fine.

 

Yes, I have/had 4 of them, two early (prespark), and two with spark. You seemed to not understand what I'm saying, most of the megasquirt spark code was written by a bunch of people with a lot of spare time just tinkering around, and the units are usually built by someone doing the same thing (Granted they are usually tested before they go out). This coupled with making the harness/etc tends to result in people screwing it up, and if ya can't trace back one wire to find if it's shorted/etc, that might be out of your scope.

 

My oil pressure gauge stopped working long ago.


In other news, I blew an engine last summer due to it running dry of oil.


Since the new (used) motor is in, I have done nothing to ensure I have an oil pressure reading.

 

Uhh... Is that a good thing, lol?

 

I know of an o-ring under the front cover that if it fails, your guage will read zero. IF the problem isnt in the guage or the sending unit, thats the next thing id check.