fuel filter Oldsmobile Aurora 1998 Owner's Manuals
Page 156 of 380
Operating the RECIRC mode in cold temperatures  or 
under  high humidity  conditions  may cause  moisture  to 
form  on the  inside of the windshield. 
If this  condition 
occurs,  deselect  the RECIRC button. 
A/C ON: Press this button  to turn the  air conditioning 
on and 
off. If  the system is  operating  in the automatic 
mode,  the A/C 
ON indicator  light  will automatically 
illuminate.  In the auto mode,  the 
A/C compressor will 
only  operate  when the system  determines  it 
is needed. 
OFF: Rotate the AUTO-PUSH  knob  to OFF. Turning 
the system  off will  cause  the fan  to  turn off and the 
airflow  to  be directed  out the lower  floor outlets.  The 
system will still  try to keep the interior 
of the vehicle at 
the previously chosen 
comfort setting.  The  outside 
temperature will show in  the display  when the system is 
set  to 
OFF. 
Air  Conditioning 
The  air conditioner  cools, dehumidifies and  filters  the 
air  for  the inside  of the vehicle. 
The  air  conditioning compressor is  enabled  in all modes 
unless the  A/C 
ON button is in the off position  (the 
indicator  light  will not be illuminated). However,  the air 
conditioning  compressor will not operate  when the 
outside  temperature is below 
42°F (7 "C). When the air 
conditioner  is on,  you  may  sometimes notice slight 
changes 
in your vehicle's  engine speed and power.  This 
is normal, because  the system  is designed to  cycle  the 
compressor on and  off to keep  the desired cooling and 
help  fuel economy. 
On very  hot days,  open the windows  long enough to let 
the  hot  air out.  This  reduces the  time required  to  cool the 
interior  of the vehicle to  a  comfortable  level.  If the 
system  is in the automatic mode  (AUTO-PUSH knob 
indicator  light  is on),  during very hot  days  the system 
will automatically 
go to  the RECIRC mode and the 
temperature door  will be positioned  at 
the full  cold 
position  for maximum  cooling. 
You can choose the 
extreme comfort setting  of 
60" F (1 6 O C),  but the 
system will not cool any  faster by choosing the extreme 
comfort setting.  
Page 333 of 380
1 Maintenance  Schedule I 
0 Lubricate  chassis  components (or at each  engine  oil  and filter  change). 
0 Rotate  tires. See “Tire  Inspection  and Rotation”  in the  Index  for  proper 
(See  footnote 
#.) 
rotation 
pattern and  additional  information.  (See  footnote +.) 
30,000 Miles (50 000 km) 
0 Check Oil Life  Monitor.  If engine  oil and  filter  are  changed,  reset monitor. 
See  “Engine  Oil” in the  Index. 
An Emission Control Service. (See  footnote *.) 
(See  footnote #.) 
and  inspect  all surfaces.  Clean  as required. 
An Emission Control Service. (See  footnote?.) 
rotation  pattern  and additional  information.  (See  footnote 
+.) 
An Emission Control Service. 
for any  damage.  Replace  parts  as needed. 
An Emission Control Service. (See  footnote?.) 
0 Lubricate  chassis  components  (or  at each  engine oil and  filter  change). 
Inspect  throttle  body bore and valve plates  for  deposits, open the throttle  valve 
0 Rotate tires. See “Tire Inspection  and Rotation”  in the  Index  for  proper 
0 Replace  air  cleaner  filter. 
0 Inspect  fuel  tank,  cap  and lines  for  damage  or leaks.  Inspect  fuel cap  gasket 
DATE I 
I MILEAGE ACTUAL I SERVICEDBY: I 
7-7  
Page 336 of 380
Maintenance  Schedule 
60,000 Miles (100 000 km) (Continued) 
0 
0 
0 
0 
Inspect  throttle body bore and valve plates  for deposits, open the throttle valve 
and  inspect  all surfaces.  Clean  as  required. 
An Emission  Control  Service. (See footnote?.) 
Rotate tires.  See “Tire Inspection  and Rotation”  in the Index  for proper 
rotation pattern and additional information.  (See footnote 
+.) 
Inspect  engine accessory  drive belt. 
An Emission  Control  Service. 
Replace  air cleaner filter. 
An Emission  Control  Service. 
Inspect fuel tank,  cap and  lines  for  damage  or  leaks. Inspect fuel cap  gasket 
for  any damage.  Replace parts as needed. 
An  Emission  Control  Service. (See footnote?.) 
67,500 Miles (112 500 km) 
0 Check  Oil  Life  Monitor.  If engine  oil and  filter  are  changed,  reset monitor. 
See  “Engine Oil” in the Index. 
An Emission  Control Service. (See  footnote *.) 
(See  footnote #.) 
rotation pattern and additional  information.  (See footnote +.) 
0 Lubricate chassis  components  (or at each engine  oil and filter  change). 
Rotate  tires. See “Tire  Inspection  and  Rotation” in the  Index  for  proper 
I DATE 
7-10  
Page 338 of 380
Maintenance  Schedule 
90,000 Miles (150 000 km) (Continued) 
0 
0 
Lubricate chassis components  (or at each engine oil and  filter  change). 
(See  footnote 
#.) 
Inspect  throttle body bore and valve plates for deposits, open the throttle valve 
and  inspect  all surfaces.  Clean 
as required. 
An Emission  Control Service. (See footnotej-.) 
Replace air cleaner filter. 
An  Emission  Control Service. 
Inspect  fuel  tank, cap and  lines  for  damage  or  leaks. Inspect fuel cap gasket 
for  any damage.  Replace parts  as needed. 
An Emission  Control Service. (See footnote-)-.) 
Rotate  tires. See “Tire Inspection  and Rotation”  in the Index  for proper 
rotation  pattern and  additional  information.  (See footnote 
+.) 
97,500 Miles (162 500 km) 
0 Check Oil Life Monitor.  If engine  oil and  filter are changed,  reset monitor. 
See  “Engine Oil”  in 
the Index. 
An Emission  Control Service. (See  footnote *.) 
0 Lubricate chassis  components (or at each  engine  oil  and filter change). 
(See  footnote 
#.) 
Rotate  tires. See “Tire Inspection  and Rotation”  in  the Index  for proper 
rotation pattern and additional information.  (See  footnote 
+.) 
DATE I 
7-12  
Page 377 of 380
Crankcase  (Engine Oil ..’ 
with Filter  Change) 
Fuel  Tank 
Rear Tread 
Height 
Width  Front  Tread