Has anyone ever added a water temp and or oil pressure gauge to a 92-97 seville? Just wondering, I like the read out on the DIC but it'd be nice if it had its own little spot, also I want to know what the oil press is before it's too late and throws a warning on the DIC.
Several threads on this down in Performance from a few weeks back.........some talk about electrical vs. mechanical gauges and how to hook them up, but nothing seemed to get accomplished.
You can look at www.scangauge.com for a post-96 engine (OBD-II) but before that you're probably in the separate gauge pod business.
In any event, the oil pressure is best done with a remote distribution T (original and remote gauge sender or capillary tube) connected to the oil filter adapter pipe fitting with a 1/8" ID flex hydraulic hose.
Darn trouble with a Northstar is there aren't any extra pipe plugs on the water crossover, so no place to tap in a second temperature sending unit or capillary bulb. For a remote water temp I guess you could fabricate a T with a boss brazed in which would go in the "hot" heater core line, but that taps off the rear of the water crossover in a really awkward place with not much room to work. The SBC and any number of engines with wet intake manifolds allow fairly simple, accurate water temp sender placement - not the Northstar
The 96-97 is OBD-II so you could get an aftermarket gauge (multifunction) that plugs into the service port, but for OBD1 I think you're outta luck.
For oil temp I would can the oil level probe and go in the pan there, but that's not "hot, flowing oil" temperature - it's pan temp: true oil temp is what's leaving the filter and going into the galleries. For pressure, you're stuck with the T either at the oil filter adapter or make the T remote with 1/8" flex armored hydraulic line, but make sure to braze a good ground wire to the T or the OEM sender will go flaky.
Earlier this year I scrounged around in my junk drawers for a remote T which I did for a Corvair years ago, but I chucked it in a fit of cleanliness.............a pic would have helped..................
I plan on doing exactly this to my 92 Eldorado, but it's a 4.9 so I expect it to be fairly straight forward. I have no idea about the Northstar engine.
Where did you plan on putting your gauges, and what style will you use? I was going to use the ashtray panel on the 92 for a couple of 2 1/16" gauges, but I haven't decided on a style yet.
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