Lemon..... How can I tell weather my oil pump or oil pressure switch needs to be replaced?

2000 JAGUAR XJ8
89,000 MILES
Avatar
MARCUSJONES1
  • MEMBER
  • 2 POSTS
One day my lemon (2000 jag xj8l) radiator hose failed and destroyed my speedometer, crank sensors some other things. After I finally finished repairing a whole bunch of parts, now when i start up my car it will idle fine until its reaches proper temp then failsafe cuts on.. OBD reader only sees P0121 and low oil pressure comes up on the display. Also my car never makes it past the 5th check on my OBD refuses to complete the cycle to get a P1111. ????
Aug 5, 2012 at 5:22 AM
Advertisement
Avatar
KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
You would need a pressure gauge to test the oil pressure.
Aug 5, 2012 at 5:45 AM
Avatar
MARCUSJONES1
  • MEMBER
  • 2 POSTS
a low pressure reading will tell me what? how would i know if its the pump failing or the sensor?
Aug 5, 2012 at 6:17 AM
Avatar
KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
If the pressure is low, that would mean the pump. If the pressure is high and gauge is reading low, what would that tell you?
Aug 5, 2012 at 6:27 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.