Have any of you had problems with the factory oil pressure gauge going to 0psi after the car has warmed up? I have already replaced the gauge with an aftermarket one which reads good pressure all the time so I know it isn't the engine.
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Sounds like a sending unit possibly going bad. -
No, I replaced that twice before I bought the aftermarket gauge! The problem is the gauge or the wirring, but only on that gauge. All the others work great. Just wanted to see if anyone else had a problem or if it is just me.Comment
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I've got an issue similar to that with my volt gauge- kinda has a mind of it's own once warm- sometimes reading 8 volts, other times reading something like 16. Been like this for 50,000 miles and checked for alternator function a couple times, so I know it's just a gauging problem. A friend with a 90 RS 305 had the same problem as you- he couldn't figure it out either so he mounted a mechanical gauge on the A pillar. Another with a 85 Iroc used to have all his gauges max out when he shut the car off, then return to normal when he started it. I would say stock gauges are pretty much junk and your mechanical gauge is much more reliable than a "properly" functioning factory one, so personally I wouldn't even bother searching for the electrical demon unless it really bugs you.Comment
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what colour are the wires to the oil pressure sender?
my gauge doesnt work - its all the way to the right all the time and i cant find the connector- it was like that since i bought the car93 t/a A4 3.23s
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