Removing And Installing Rotary Idle Actuator - Porsche 928 Workshop Manual

928
Electronic Fuel Injection - LH-Jetronic
REMOVING AND INSTALLING ROTARY IDLE ACTUATOR
'87 MODELS ONWARD
ENGINE TYPE M28. 41/42
Removing:
l.Disconnect battery ground strap
behind tool tray.
Place fender and bumper guards
in position.
2.Unbolt and remove transverse
strut.
l
Note:
Car must be standing on its wheels,
transverse strut is under tension.
3.Remove air intake hoses and air
filter as a complete unit.
Disconnect vacuum hose from brake
booster and remove.
4.Unbolt bracket for accelerator
linkage and TDC sender from
intake manifold.
5.Unbolt holder for fuel line and
crankcase breather. Remove
air-flow sensor.
6.Remove left-hand and right-hand
injection-valve covers. Remove
both union nuts from
fuel-distribution line,
counterholding with a second
open-ended wrench. Catch any
escaping fuel in a suitable
container. Disconnect
distribution line from intake
pipes and lift out.
7.Mark vacuum hoses and disconnect.
Break electrical connection
between thermostatic switch and
intake pipe.
8.Unbolt fuel-line-pressure damper
and holder. Disengage throttle
valve actuator cable and
disconnect plug from throttle
valve.
9.Remove air-guide dome from
throttle-valve housing. Use
Special Tool 9266 to disconnect
electrical plug from rotary idle
actuator.
Note:
Take care to ensure that the plug
gasket remains in the male half
once the connection is broken and
does not become detached.
a
Printed in Germany-XIX,1987
Removing and Installing 24 - 223
Rotary Idle Actuator