What causes low oil pressure at stop light on a 4200 vortec
What is your question?
I have a 2005 trailblazer and it keeps saying low oil pressure when I come to a complete stop then when I rev my engine, it goes back up to normal then it drops again. I have changed the oil pressure sensor, but still having the same problem, nothing sounds off And it’s running just fine oil pressure light comes on and every time I get a oil change the light doesn’t pop up for a couple weeks then it start over again
What makes this problem better or worse?
Oil change
How long has your 2005 Chevrolet Trailblazer EXT had this problem?
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Hi, what do you mean by "low oil pressure" - are you seeing a gauge with a pressure reading, or are you monitoring a gauge that will show pressure?
I would recommend having the actual oil pressure of the engine measured using a manual gauge at the pressure sensor fitting of the engine. This will determine the real readings and show if there's a concern with the engine internally.
If it's not an internal engine issue, the sending unit, wiring or gauge could be a concern.
