Low Oil Pressure Warning Light

1998 BUICK LESABRE
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WAHOOSUE
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After driving for around five minutes, when stopping at a light the oil pressure gauge dips almost to zero and the warning light comes on. If the car is shifted into neutral, the gauge moves up a bit and the light goes out. When driving is resumed, the pressure needle goes back up to a little over 40. Any idea what may be causing this?
Sep 22, 2010 at 12:38 PM
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WRENCHTECH
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The question that you have to answer first is whether you actually have low oil pressure or whether the gauge may be incorrect. You could check the pressure manually with a gauge but it's cheaper just to replace the gauge sender and see if anything changes. If it doesn't help, they you probably need a new oil pump among other things.

Read the guide below, it will help you figure this one out

https://www.2carpros.com/articles/high-or-low-engine-oil-pressure
Sep 22, 2010 at 12:50 PM
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