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1995 Pontiac Bonneville Oil Pressure

Tiny
RDADAMS
  • MEMBER
  • 1995 PONTIAC BONNEVILLE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
I have a 95 Bonneville that has erratic oil pressure. It fluctuates, from 35 -50 psi while driving down the road at an even RPM and drops into the red at idle (sometimes) when it's warmed up. Sometimes it will idle at 15 to 20 psi, but more often than not it runs from 0 to just under 10 psi. I changed the PCV valve and am considering changing the oil pump, but wanted to see if anyone out there knew what might cause this?
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Saturday, June 14th, 2008 AT 5:24 PM

3 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Check the oil pressure with a mechanical gauge first to verify you have low oil pressure. It could be a bad gauge or sender.
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Sunday, June 15th, 2008 AT 6:32 AM
Tiny
PHILOSOPHICALLY2815
  • MEMBER
  • 3 POSTS
I had the same problem but then they changed my fuel pump, filter, strainer, sending unit and changed oil and is perfect now
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Thursday, June 19th, 2008 AT 11:40 AM
Tiny
SPAZZTIC_KILLER
  • MEMBER
  • 1 POST
I was wondering if you found out what it was? I thought it might be the Oil Sensor or the Oil Pump?
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Wednesday, November 5th, 2008 AT 11:38 AM

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