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Re: <E30> M3 running hot

Anthony Le wrote:

>My 88 M3 has been running pretty hot while idling
>lately.  The temp guage shows a bit over 1/2 when I'm
>moving, but climbs up (about 15 sec) to 3/4 & above
>when I idiling at a stop.  The car cools down when I
>begin moving again.  The main engine fan is working.
>I can't stop it from turning.  I did notice that the electric
>aux fan is not coming on.
>
>Where are the aux fan temperature sensors in an 88
>M3?  There are 2 holes in the bottom left (driver side)
>of the radiator, but no senors attached.  Can anyone
>M3?  There are 2 holes in the bottom left (driver side)
>of the radiator, but no senors attached.  Can anyone
>tell me where the sensor is on the E30 M3 and how to
>test it?
>
>BTW, the fan aux fan is working and there is 2
>electrical connectors coming out of what seems to be
>the thermostat.  One has 3 wires green, black, and
>gray&black.  Can't seem to get the other one off.

Is the A/C on when it is running hot?  The electric pusher fan should run 
when the A/C is turned on.  Is the water pump belt tight?  Your fan  
clutch may have degraded, slipping more than normal.  Is the fan shroud 
still in place?  Hopefully your radiator cores are not clogged.  Just 
some thoughts.

Good Luck,
Stu Raike, St. Louis
'92 325i
'88 M3
'82 320i (For Sale)