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orange lights
Posted: Fri Oct 24, 2008 2:07 pm
by juliebreed
i am an idiot i\'m sure , but wot is are the 2 orange lights either side of the speedo , i hav the right one goin on intermittently????
Posted: Fri Oct 24, 2008 2:26 pm
by Dru
From my reading of it, one is the oil pressure light and the other a differential oil pressure warning, which tells you when the oil filter is clogged. Does the left one come on when you switch on the ignition and then go off after the engine is started? -which is how the oil pressure light behaves when things are working as they should...
Posted: Fri Oct 24, 2008 4:09 pm
by mike.perry
The one on the right is the low oil pressure light which should go out as soon as the engine is running. If it flickers at tickover then increase the tickover speed slightly. It is generally an indication of a worn engine. It should operate below 8psi.
The one on the left is the oil filter blocked warning light. I have never seen one lit so I guess it only works when the filter hasn't been changed for 20000 miles. Most filters haven't got a warning light anyway.
Posted: Fri Oct 24, 2008 10:12 pm
by bigginger
Dru wrote: the other a differential oil pressure warning
Nope, engine oil filter blocked warning, as has just been said - just wanted to make it clear
Posted: Fri Oct 24, 2008 11:02 pm
by PSL184
bigginger wrote:Dru wrote: the other a differential oil pressure warning
Nope, engine oil filter blocked warning, as has just been said - just wanted to make it clear
Same thing, isn't it..... I don't think Dru meant the "diff" oil pressure but a "difference" in pressure across the inlet and outlet of the filter.... ?
Posted: Fri Oct 24, 2008 11:31 pm
by d_harris
Thats how I read it!! I have the sender for it on my loom but nothing to plug it into
Posted: Sat Oct 25, 2008 6:41 am
by Dru
Yes, that is indeed what I meant; the difference between pressures before and after the filter. Can't be too careful with words, of course.
...ironically, I was draining the diff oil only yesterday too.
Posted: Sat Oct 25, 2008 10:27 am
by rayofleamington
The one on the left is the oil filter blocked warning light. I have never seen one lit so I guess it only works when the filter hasn't been changed for 20000 miles. Most filters haven't got a warning light anyway.
I' had a MG 1275 engine fail due to lack of a filter blocked sensor. Filter was changed when the engine was fitted 2 weeks earlier.
Posted: Sat Oct 25, 2008 11:56 am
by bmcecosse
I don't know any other car (maybe A40?) which has this differential pressure oil filter blocked warning light! Dru is correct - it does measure the differential pressure across the filter element. Of course - since lots of cars have lost the plate and/or spring under the filter element, there is no chance of the filter blocking anyway!