Both Cooling Fans Not Working '94 Accord

Hi all,

I've done all of the troubleshooting tips given here (relay, fuse, 1
thermoswitch) and jumpered the fans from the battery and neither
worked. What are the chances that both fans would go due to an
electrical problem?

Last August, the compressor was replaced and it worked fine for
awhile. My wife told me that whenever she used the AC, it would
nearly stall the engine and sure enough that's the case now. One
thing the shop did not do was replace the drier, not sure if that can
cause this problem though. Any ideas on what went wrong and what I
can do next. TIA.

Carl

 

Just to exclude the possibility of a grounding problem, you could try
jumping both the ground and the positive supply lead of each fan
directly to the battery negative and positive terminals, respectively.
I'd put something like a 30 amp fuse in line with the positive side
jumper wire to avoid unpleasant surprises.

 

Thanks for the advice, it was confirmed at the shop that both fan motors are
DOA. I've found a pair of used for $40.00 each which I think is fairly
reasonable. Any potential problems I should look for with these used motors
when I pick them up from the junkyard? Thanks.

Carl

 

With regard to the near-stall when the A/C is run, I'd suspect you have
a separate problem. There's a high-idle valve which increases the idle
to compensate for the increased load of the A/C compressor. It
functions by allowing more air into the throttle body, and on my Accord
(91) is located to the front of the throttle body towards the driver's
side. With the A/C running, if you pinch off the hose between the valve
and the throttle body, the idle speed should decrease; if there's no
change, then there's likely no air flowing through the hose, and the
valve is inoperative.

B