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FAQ - What does this button do?

Frequently asked questions and DIY's for common mechanical & electrical problems and Isuzu maintenance, please check this section before posting new questions. If you have something to add here please contact a member of the FAQ Team.

FAQ - What does this button do?

Postby pig75 » Sat May 09, 2009 8:14 am

This switch is for quick engine warm up it will only work at temperatures under 8deg C
Short description of the QWS system
The engine warm-up system is a device which changes the openning of the throttle valve for intake in accordance
with the engine rpm, controls the amount of the intake air, and changes the air ratio which is supplied to the cylinder.
The device is also provided with such functions as to measure the amount of heat capacity, to close the exhaust
throttle valve to raise the exhaust pressure, and to accelerate the rise in compression and temperature, and the
increase of fuel.


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