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Subject:Re: oil pressure
From:David Kao
Date:Mon, 7 May 2007 09:19:46 -0700

--- Thomas Pfrommer <pfrommer@PHAS.UBC.CA> wrote:

> Oh I am not driving around, as I do have problems with the oil pressure
> I am just idling, getting it warm and see how it behaves. So the fan has
> to kick in as there is no wind blowing to the radiator. But I guess, it
> is quite high when it kicks in compared to what I had before, if I am
> not mistaken. You said it moves to the center of the gauge this is just
> on top of the location of the red warning light (for expansion tank
> level and too hot temperature) is it? I mean this light. It never comes
> too the top of the gauge, it just passes the center where the red light
> is located. So I do have perhaps  bit high temperature in the water, but
> certainly I am not reaching the limit ;-)
> But yes perhaps I should change the thermostat too, its not that
> expensive ...
> Cheers
> Tomas

Thomas:

I wasn't aware that you were only idling the engine... Yes, the temperature
will reach high enough to cause the fan to kick in. That's normal. The temperature
gauge should pass the center but should be still far from the red zone at the far
right side.

The sensor responaible for the fan to kick in is a different one for the temperature
gauge. I believe it is located in the front on the radiator. If your oil warning
light blinks at the time the temperature gauge shows a very high reading it seems
overheating is the cause of the blinking light. The engine was too hot and the
viscosity of oil became too low.

Under normal driving on the freeway the engine temperature should be lower than that
of driving in town. If the oil light blinks when you stop for traffic light it could
be caused by engine overheating. I think that's what happened to me. If you were only
idling on your drive way that could be the same too.

David

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