Cadillac 1975 Owner's Manual page 52

FIG. 2-27: DRAIN HOLE LOCATIONS
Astroroof
The Astroroof is a specially treated safety
glass panel and sliding sunshade built into the
roof of cars so equipped. The sunshade is
moved by pulling or pushing the handle to
obtain the desired setting. To completely close
the shade, push its forward edge into the
groove at the front of the roof.
FIG. 2-28: ASTROROOF
Electronic Fuel Injection
An electronically controlled fuel injection
system is available on all styles except Fleet-
wood Seventy-Fives and the Commercial
Chassis. This system replaces the carburetor
on cars so equipped. During engine starting,
the accelerator pedal is not depressed, but
otherwise the car is operated in a normal
manner requiring no special procedures or
techniques.
A throttle body assembly is used in place of
a carburetor. The fuel/air mixture is regulated
by an electronic control unit that monitors
throttle opening, engine speed, manifold
pressure, air temperature and engine coolant
temperature. Based on the monitored infor¬
mation the control unit computes the correct
amount of fuel for proper engine operation
and actuates the injectors accordingly.
Refer to the maintenance Schedule that ac¬
companies this manual for service informa¬
tion related to the Electronic Fuel Injection
System.
51