1990 GMC 1500 Pickup Support Question
1990 GMC 1500 Pickup Support Question
Find answers below for this question about 1990 GMC 1500 Pickup.Question posted by spickette on May 6th, 2013
Oil Gauge Problem
For sometime my oil guage has sometimes pegged all the way and always registers past 1/2 way mark. No longer doing that, but now when idling or driving slow, check guage light comes on and oil guage is on zero, but goes back to normal. Engine is not hot and running fine. Any ideas?
Current Answers
Answer #1: Posted by roadrunnertim on May 6th, 2013 12:14 PM
roadrunnertim
Member since:
May 9th, 2012 Points: 1,071,190
Member since:
May 9th, 2012 Points: 1,071,190
Your oil pressure switch is either clogged with gunk or it is defective. The oil pressure switch screws into the engine block and has a wire attached to it. Shouldn't be too hard to find.
Here's what your oil pressure switch should look like:
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