Land Rover Repair: Land Rover Discovery oil pressure, oil pressure switch, land rover discovery

Question
I have a 2002 land rover discovery with 110000 miles. Once the motor is warm the oil light comes on. I replaced the oil pump and it is still happening. Could this be main bearings and also is there a specific torque on the bolts if and when I replace the bearings? Thanks

Answer
Hi Vincent,

have you considered testing the oil pressure switch?

Here some LR info that may help:

<<

Switch - oil pressure
$%12.60.50

Remove
1. Release fixings and remove battery cover.
2. Disconnect battery earth lead.
3. Raise front of vehicle.

WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.

4. Remove fixings and remove underbelly panel.
5. Disconnect multiplug from oil pressure switch.
6. Position container below switch to catch oil spillage.
7. Remove oil pressure switch and discard sealing washer.

Refit
1. Clean oil pressure switch threads.
2. Fit new sealing washer to switch.
3. Fit oil pressure switch and tighten to 15 Nm (11 lbf.ft).
4. Connect multiplug to oil pressure switch.
5. Fit underbelly panel and secure with fixings.
6. Remove stand(s) and lower vehicle.
7. Connect battery earth lead.
8. Fit battery cover and retain with fixings.
9. Top up engine oil.

>>

Best of luck,
JohnMc