We have a '92 Buick Riviera 3.8L with a horribly erratic, digital, oil
pressure gauge. I'm having trouble locating the Oil Pressure Sending
Unit, so I can check for loose connections and/or replacement. Where is
the Oil Pressure Sending Unit located on this vehicle?
And figure on replacing the sender. Those senders have a bad issue
with wearing a bad spot in them at the resistance value of normal oil
pressure, which will make the gauge reading erratic. Eventually it
will go full scale on you when oil pressure is at normal value. Did
this on my '87 Olds and numerous other GM cars with 3.8L V-6s and oil
pressure gauges, and now my '94 Regal's oil pressure gauge is acting
weird. Ahhhh such fun . . .
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.