Re: Fans run continuous

["Jim Reeve" <ultra@xxxx>]

Is your AC turned on? Even without the engine running, when the mode 
switch is selected on AC (max/norm) or Bi-Lev, it will activate the AC 
compressor. This in turn, turns on the fans. Without the engine 
running, the compressor will not cycle, so it will give the impression 
that the fans are always staying on. If this is the case, turn the 
mode switch off, or start the engine so the compressor cycles, and the 
fans should start acting normal again. If this doesn't cure the 
problem, you could have a stuck relay (but that would keep the fans 
running without the car on, so this is probably not it); or there 
could be a problem with your otterswitch which is keeping the fans 
activated. The otterswitch is what turns on the fans when the coolant 
reaches a certain temperature. To check the otterswitch, go back into 
the engine compartment, and look for the aluminum cooling pipe along 
the driver's side of the engine. Either on the top or bottom side of 
this, you should see two wires going into a plug. Disconnect one or 
both of them and see if the fans turn off. If they do, your 
otterswitch is bad, and needs to be replaced. (Plug them back in 
though, better to have the fans always on than not on at all!) If 
not, you probably have a short somewhere else in the system, which I 
have no clue how to fix. Good Luck!

Jim Reeve
MNDMC - Minnesota DeLorean Club
DMC6960

--- In dmcnews@xxxx, tmasterlc@xxxx wrote:
> Ive searched the archives but can only find info on fans that do not 
> work.
> 
> Our fans used to cycle on and off with engine temp but now run 
> continuous from the moment the key is turned on and never shut off.
> 
> Any help would be appreciated.
> 
> Ron & Cheryl
> #6322