[urq] Oil temp falling on -88 MB quattro

[Louis_Alain_Richard at computerhorizons.com]

>The quattro has done this a few times the last two months. At first the
oil
>temp rises normally to about 100-110 degrees celsius. then all of a sudden

>when I drove, the reading on the digital display fell down to 60 degrees
>(the lowest reading). When I drove a further 30 minutes the temp jumped
>again up to the normal 120-130 degrees on highway.
>
>Does the urq have a thermostat on the oil cooler?
>If there is a thermostat, where is it located?

Not on the oil cooler, but yes there is one located in the oil filter
housing.

>Could the problem be caused by this?

Very doubtful.

As Mike said, wiring or sender is more likely to be at fault. The oil temp
can't move that fast and that much, unless you have a _very_ efficient oil
cooler :-). And thermostat failures means they are stuck in a position, not
hunting between full open and full closed at random.

Louis-Alain