Chrysler 2005 Crossfire SRT6 Service Manual page 4323

25 - 30 AIR INJECTION
covers. The Air Pump Switchover Solenoid (3) is mounted on the right front of the engine, just below the Air Pump
Switchover Valve RH (6).
OPERATION
Air is allowed to enter the exhaust when the PCM
simultaneously actuates the Air Pump Relay, Air Pump
(1), and Air Pump Switchover Solenoid (4) after
engine start-up for up to 2 1/2 minutes. The following
conditions must also be met in order for the system to
become active:
• Coolant Temperature >10°C (50°F) but <60°C
(140°F)
• Engine Speed <3000 RPM
• Throttle Valve Not Wide Open
After an actuation, the air injection system will remain
deactivated until the coolant temperature drops from
>60°C (140°F) to <40°C (104°F).
The Air Pump (1) draws in air through a maintenance-free filter and pumps it to the Air Pump Switchover Valves (3
and 6). The Air Pump Switchover Valves (3 and 6) prevent exhaust gases from flowing back into the Air Pump (1).
The Air Pump Switchover Solenoid (4) is supplied with vacuum from the intake manifold through a check valve (5).
When the Air Pump Switchover Solenoid (4) is activated, it passes engine vacuum to the Air Pump Switchover
Valves (3 and 6). The air which is delivered via the Air Pump Switchover Tube (2) is forced through the valves into
the cylinder head openings to the exhaust. The injected air reacts with the hot exhaust gases in the outlet port. An
oxidation of carbon monoxides (CO) and hydrocarbons (HC) takes place and results in an additional increase in the
exhaust temperature.
SPECIFICATIONS
TORQUE
DESCRIPTION
AIR PUMP RETAINING
BRACKET
N·m
20
Ft. Lbs.
—
ZH
In. Lbs.
177