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 What’s TCAC? 
TCAC: Throttle Controlled Air Conditioner 
 
TCAC is a great solution to keep the interior of your car cool without 
loosing precious power at full throttle, so your car will always feel strong, 
with and with out the load of Air Conditioner Compressor. 
 
How does it work? 
TCAC automatically turns off the Air Conditioner Compressor every time the 
throttle is pressed over 60% and keeps it off for an additional 6 seconds after the throttle 
position comes back bellow 60%. Long enough to let you change gear and 
accelerate again, also allowing RPM to drop to the lower level before the AC 
clutch engages again when you begin cruising.  
 
Does it effect both ECONO and FULL AC modes? 
Yes, TCAC controls both FULL AC and ECONO modes as well as amber and green light 
indicators of the Air Conditioner Switch. 
 
Is the temperature inside the car going to rise because of TCAC? 
Not really, since the full throttle operation lasts only for a short period of 
time. TCAC allows the air conditioner compressor to be turned back on, 6 seconds 
after the throttle position gets back to 60% and below. The AC 
operates as usual when cruising, decelerating or accelerating gradually. 
 
What cars is TCAC designed for? 
TCAC was designed specifically to control the AC compressor in 1G DSM 
cars, 90-94 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser and 91-92 Mitsubishi Galant VR4, using solid state technology. There is no mechanical relay (did we 
mentioned reliability?) but this makes TCAC specific for this application. 
  
All statements, 
installation and wiring instructions apply to cars mentioned above. 
What  should I do if I want to 
trigger some other device at 60% throttle position? 
If you want to install TCAC 
in a different car or for a different application, other than control of the AC 
compressor, click HERE for instructions. 
  
Contact Zeitronix 
  
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