Re: Cooling Fan Failure.

["Harold McElraft" <hmcelraft@xxxx>]

The OEM fans will wear the brushes out prematurely due to the way 
they are designed to turn on and off. The brushes just wear down to 
the point where they no longer touch the armature. I have had them 
apart numerous times. The brushes use to be readily available but I 
have long since lost the details. That is because after I wired the 
fans to run all the time when the AC was on, they never went bad 
again. These fans are DC motor and they will run cooler and the 
brushes will last longer if they just stay running once they are 
started. I did this on three different DeLoreans I owned when I 
lived in Houston. In Houston I figure I had the AC on 11 months out 
of the year. On 2 5 speed cars the Temp needle never moved from the 
warmed-up position. On the auto, on really hot days (over 90 
degrees), when I am really working the torque converter, I could see 
the needle move up some just into the fan run zone. I have driven in 
100+ degree weather with the AC on at 75 mph and the needle stays in 
the run zone on the auto. In the 5 speed it did not seem to matter 
what the temp was, the needle never moved. That is with an OEM 
radiator. My point? The fans should be wired to run all the time 
with the AC on in my opinion. It is so much easier on the fan motors 
and the car runs cooler. Of course, you have to do relay thing. 
Don't leave that oem fan fail module in there, it is junk.

BTW, John Hervey, www.specialtauto.com has the parts and rebuilds 
the OEM fans. Price seems good too.

Harold McElraft - 3354