Mud-club

Vehicle & Technical => Discovery => Topic started by: Steven on December 18, 2007, 19:51:37

Title: Oil Light
Post by: Steven on December 18, 2007, 19:51:37: Hi all,
I have to admit the oil was overdue by two mouths, so we got it changed two weeks ago. The problem is the oil light keeps coming on, sometimes for a miniut or two and other times for a couple of seconds. Everytime it comes on we check it to make sure but now its becoming a joke as its fine, just below the top mark. What could be wrong then?
Oh, this did happen before we had oil change BTW....
Title: Oil Light
Post by: Disco-Ron on December 18, 2007, 19:56:06: Simple really, two choices, no oil pressure, or duff switch.....
Title: Oil Light
Post by: Hightower on December 18, 2007, 19:58:44: Don't want to sound condescending, but did you use the right grade of oil?
Title: Oil Light
Post by: Steven on December 18, 2007, 20:02:20: Quote from: "Hightower"
Don't want to sound condescending, but did you use the right grade of oil?

Yes mate, a good freind did it for us who is also a LR enthusiast.
I'm sure he would of put right stuff in, becides it started coming on before we changed oil...
Title: Oil Light
Post by: doris on December 18, 2007, 22:13:13: In my experience, oil pressure switches usually fail such that they don't come on at all, rather than coming on when they shouldn't.

If oil pressure really is low, I would expect the light to come on when the engine is warm/hot at idle/low revs.

My money would be on the wrong grade of oil. A garage put 10w40 semi synthetic in mine and the oil light came on after a run on the motorway whilst at idle.

Just a thought.... did your man use a flushing chemical like Forte? I have heard they can cause low pressure in a worn engine.

Damon
Title: Oil Light
Post by: Steven on December 18, 2007, 22:43:29: Quote from: "doris"
Just a thought.... did your man use a flushing chemical like Forte? I have heard they can cause low pressure in a worn engine.

Damon

Yes...

Erm, could someone explain low pressure... :oops:
Does it mean that the oil isn't being pumped around the engine at suffcient pressure?
Title: Oil Light
Post by: ben_haynes on December 19, 2007, 00:01:04: yes it does mean that

i use this on all my customers vehicles and have never had a problem

can only think it is the Oil Presure switch faulty my old 200tdi had this problem
Title: Oil Light
Post by: floyd fan on December 19, 2007, 09:32:52: I had a similar problem, I changed the switch but it was still the same. I fixed it by pulling the wire of the switch - no more warning light. :lol:
Title: Oil Light
Post by: Guardian. on December 19, 2007, 10:24:32: TAKE IT TO A GARAGE AND GET THE OIL PRESSURE TESTED WITH A GUAGE, DO NOT JUST DISCONNECT WIRES, YOU WILL END UP BUYING A NEW ENGINE THAT WAY IF ITS LOW.
Title: Oil Light
Post by: Kaneda on December 19, 2007, 10:32:10: If the switch is ok, and you are getting the warning light coming on when driving - STOP!

It is possible that the pickup is blocked in the sump, or the pump is not working as well as it should.
Title: Oil Light
Post by: Range Rover Blues on December 19, 2007, 11:53:17: Pickup pipe blocked as suggested, or possibly contamination in the pressure relief valve.

Also possible that the wire has chaffed and is shorting to earth, I had that happen to my Cavalier.