Replaced Oil/Temp/Fuel gauge and now this...

[Joseph_H]

Started with oil pressure gauge gone bad (dropped to 0).. Replaced oil sender and still bad gauge. Finally found gauge at eBay and replaced it. Now gauge shoots way up above 3 bar (see picture below) when oil warms up the gauge barely moves down to just above 3. What could it be? Bad gauge or sender? The other gauges (fuel and temp) seem to work just fine. During start up of engine, my oil pressure reads about ~80PSI or about 285 ohms in resistance.. it usually drops after 10-15 minutes. Is that too high?

[J.HIDALGO]

and re-installed in the wrong position. Does the needle go back to "0" when the car is off/disconnected? That would be a clue!

[Joseph_H]

when engine is off.