oil gauge dropped to zero
Today my oil gauge suddenly dropped to zero. I stopped, checked under the hood, no visible signs of leaking. Oil was low, added a quart, pressure was normal at start up, within 1 minute gauge dropped again. There is a severe ticking noise now so I shut down then started up again, pressure was fine, ticking was quieted, within another minute or two, gauge dropped and ticking returned.
Only thing I can think is the oil pump went bad.
Since your TJ has the 'dummy' gauge, I would suspect with your symptoms with the no pressure reading and ticking, that it's the oil pump and not the sending unit but I would confirm that with a mechanical gauge.
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