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Offline Steven

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Oil Light
« 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....
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Offline Disco-Ron

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Oil Light
« Reply #1 on: December 18, 2007, 19:56:06 »
Simple really, two choices, no oil pressure, or duff switch.....
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Offline Hightower

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Oil Light
« Reply #2 on: December 18, 2007, 19:58:44 »
Don't want to sound condescending, but did you use the right grade of oil?
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Offline Steven

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Oil Light
« Reply #3 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...
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Offline doris

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Oil Light
« Reply #4 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
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Offline Steven

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Oil Light
« Reply #5 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?
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ben_haynes

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Oil Light
« Reply #6 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
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Offline floyd fan

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Oil Light
« Reply #7 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:
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Oil Light
« Reply #8 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.
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Kaneda

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Oil Light
« Reply #9 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.
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Offline Range Rover Blues

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Oil Light
« Reply #10 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.
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