[Shotimes] '94 ATX dual cooling fans

MonsieurBoo@aol.com MonsieurBoo@aol.com
Tue, 30 Mar 2004 07:31:10 EST


We had our first 80 degree day on Friday at afternoon rush hour, stuck in 
parking lot traffic on the DC Beltway and my recently acquired SHO overheated.

Up till now, she's been cycling right around the "R" (of "NORMAL") on my 15 
mile / half-hour runs to and from work in 30-60 degrees.  After about 45 
minutes in stop and go, it had crept up to the top of the "O", and I bailed to 
surface streets when it pegged "N" ... and missed a GREAT party in Annapolis!  ;-(

During that time when it went through "O" to "N" I believe there was a 
problem with the top range of the fans because there seemed to be excessive whine 
and at times, a whiff of burning insulation.  Naturally, fear of an under hood 
fire also pushed my decision.  

Fortunately after getting in normally moving traffic at neighborhood speeds, 
by the time I got home the needle was right back where it usually is.  No more 
excess noise or smells either.

I believe it did this one time earlier also.  It overheated on the way home 
from work and had the same symptoms.  But since I had the original 'stat from 
when I bought the car a month earlier, we pulled it and it was busted.  So that 
seemed to be the "OBVIOUS" cause!  <G>  But in retrospect I think the fan was 
also complaining.  Both fans do blow air "in the driveway", but it seems in 
the top range "on the road" there is a bearing or windings problem with one of 
the motors in question.

By the symptoms, I assume it's the auxiliary fan, or let's say "Whatever 
kicks in at the top end is the likely culprit".  Is that the fan on the driver's 
side or the one on the passenger side?  Should I be considering other 
possibilities?  Is there any shade tree way to check for adequate radiator flow?  The 
entire rest of the cooling system was changed last month.

Also, it looks like a breeze (yuk, yuk) to lift the fan assembly out, do any 
of the fasteners require the assistance of a double jointed spider monkey or 
any other gotchas?  Or is this truly an "easy days" fix as it looks like?

Thanks team,
Mark LaBarre
'94 ATX 125k