928 S V8-4957cc 5.0L (1985)
Fuel Cooler: Service and Repair
AIR FLOW SENSOR, REPLACE
1.
Disconnect battery ground cable.
2.
Remove air intake hoses, then remove upper air cleaner housing, filter and remove hose from blow-off valve.
3.
Remove lower air cleaner assembly attaching bolts, then remove lower air cleaner assembly and air flow sensor.
4.
Remove air flow sensor wiring connectors.
5.
Loosen clamp, then remove air flow sensor from lower air cleaner housing.
6.
Reverse procedure to install. Prior to installation, check O-ring in housing for damage and correct fit. If necessary, replace O-ring. Lubricate
O-ring with silicone grease.
FUEL COOLER, REPLACE
1.
Disconnect battery ground cable.
2.
Discharge A/C system.
3.
Remove upper air cleaner housing and filter, then disconnect hose from blow-off valve.
4.
Remove lower air cleaner housing attaching bolts, then pull out lower air cleaner housing with air flow sensor, then remove plugs. Press bar in
direction of bar while removing plugs.
5.
Remove fuel cooler as follows:
a. Remove right side refrigerant line coupling.
b. Remove fuel lines.
c. Remove bracket.
d. Remove left side refrigerant line coupling, then the cooler.
6.
Reverse procedure to install.
OXYGEN SENSOR
1.
On 928 models, the sensor wire electrical connector is located behind the lower section of the foot support on passenger side.
2.
Disconnect electrical connector and push grommet and plug out through floor board.
3.
Raise and support vehicle.
4.
Locate oxygen sensor in exhaust pipe and remove safety plug from sensor, then the sensor.
5.
Coat threads of new sensor with anti-seize compound, using care not to get any in the sensor slots, then install sensor.
