oil pump buick park avenue 99 3.8

1999 BUICK PARK AVENUE
160,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JBELLLIVE04
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  • 5 POSTS
driving home last night i noticed my temp gauge running 225 so i turned my radio down, and could hear my lifters rattling.my oil pressure gauge has always read 199 thinking it has been faulty since ive owned the car, but now it reads 123. is my pump failing? i did pull the filter and checked the spring and it seems to work properly, what do i need to do next?
Aug 14, 2011 at 7:18 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check the oil pressure with a mechanical gauge,if normal replace the oil pressure switch. If abnormal could mean oil pump and engine bearing.
Aug 15, 2011 at 11:50 PM
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JBELLLIVE04
  • MEMBER
  • 5 POSTS
will the switch cause the lifters to rattle? what is normal oil pressure on this car?
Aug 16, 2011 at 6:26 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
The switch will not make it rattle-the oil pressure at idle should be 10-12psi and increase to 40psi at 2K rpm
Aug 16, 2011 at 11:06 PM
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