1981 CHEVROLET MONTE CARLO sensor

Downloaded from www.Manualslib.com manuals search engine FUEL REQUIREMENTS
Your engine is designed to use only unleaded gasoline . Unleaded gasoline must be uSed for the emission control system to operate properly . Its use will
also reduce spark
plug fouling, exhaust .system corrosion and engine oil deterioration.
Using
leaded gaso~ne can damage the emission control system and could
result
in loss of warranty coverage. The effectiveness of the catalyst in the
catalytic converter decreases after use of as little as one tank of leaded
gasoline.
Also, your vehicle may have the "Computer Command Control" system, which includes an oxygen sensor. Leaded gasoline will damage the
sensor,
and attect emissioncont(ols. (For more information, see "Computer
Command Control
System" in "Service and Maintenance,"Section 5 of this manual. Federal regulations require that pumps delivering unleaded-gasoline
be labeled with the word UNLEADED. Only these pumps have nozzles whichftl the filler neck of your vehicle's gasoline tank.
In the United States, Federal law also requires that gasoline octane ratings be
posted on the pumps. The octane rating shown is an average of Research
octane (R) and Moto< octane (M). In most parts of the United States , you
should use unleaded gasoline with an octane rating of at least 87. However,
you may use unleaded gasoline with an Q!;tane rating as low as 85 in these
. high -altitude areas: Coloraclo , Montana, New Mexico , Utah , Wyoming,
northeastern Nevada, southern Idaho, western South Dakota, and that part of
Texas which is directly south of New Mexico .
Using unleaded gasoline with
an octane rating lower than stated above can
cause persistent, heavy
"spark knock." (" Spark knock" is a metallic rapping
noise.) " severe, this can
lead to engine darnage. " you detect heavy spark knock even ",hery using gasoline of the stated octane rating, 0<. if you hear steady spark knoo~ 'wfiil.)' Holding a' steady speed on level roads, have your
dealer correct the
problem . Failure to take steps to stop such knocking is
misuse
of the vehicle, for which Chevrolet is not responsible . However, now and then you may notice light spark knock for a short time while accelerating
or driving
up hills : This is no cause fo< concern, because you get the greatest
fuel economy
benem from the gasoline's octane rating when there is
occasional light spark knock. Using .gasoline with a higher .octane rating than
that which
allows occasional spark knock is an unnecessary expense.
Gasohol
Gasohol, a mixture of unleaded gasoline and ethanol (grain alcohol), is
available in some areas , You may use gasohol in yourvehicle ,provided it is no
more than 10% ethanoL Be sure the gasohol has octane ratings no lower than
those stated above for unleaded
gasoline . Some vehicles using gasohol could run leaner . Most drivers will not notice a difference, but some may. In such
cases your authorized dealer can make c.ertain adjustments, provided they are
not in violation of the Federal
Clean Air Act. " you. are still not satisfied with gaSOhol performance , you may prefer to uSe unleaded gasoline. •
NOTICE: ,Take care to not spiH gasohol on painted surfaces. Gasohol can cause paint damage, which may not be covered und~r the new vehicle warranty.
2·3

Downloaded from www.Manualslib.com manuals search engine OPERATION IN FOREIGN COUNTRIES
All models which have the Computer Command Control system, (see "Service
and Maintenance," Section 5), are designed
to use unleaded gasoline as
specified under
"Fuel Requirements" in this section of the manual. Therefore,
these cars are not intended for use in areas where unleaded gasoline is
not readily available,
There also is a chance the gasolines available in some countries will not meet the needs of your gasoline engine even if it is not equipped with the Computer
Command Control system; Low~octane-ratedgasolines may cause engine pre­
ignition and serious engine damage, for which Chevrolet is not responsible.
In either case (with or without the Computer Command Control system), the
use of leaded gasoline will cause the emission control system to lose its
effectiveness.
It could also affect coverage· under the emission warranty. In
case of emergency, leaded gasoline may be used in your vehicle if unleaded gasoline is not available, but it should not be used exclusively. If you must use
leaded gasoline exclusively
in a vehicle designed for unleaded gasoline,
different maintenance intervals will be required. For additional information and
a copy of the maintenance schedule write to: Chevrolet Motor Division, Consumer Relations Department, Warren, Michigan 48090, (in Canada, write
to General Motors of Canada Limited, Customer Service Department, Oshawa,
Ontario
L 1J 5Z6).
When writing, please
include:
•
the Vehicle Identification Number and
• the countries in which you plan to travel.
Tires
If you plan to use your vehicle in countries where speeds over 75 mph (120
km/h) are allowed, see lIem3 on page 5-12.
IMPORTANT FACTS YOU SHOULD KNOW ABOUT FUEL
ECONOMY AND HOW
TO IMPROVE IT
How you drive, where you drive and when you drive all affect how many miles/
kilometers you can get from a galion/liter of fuel. The careful attention you give
your vehicle as far as maintenance and repairs are concerned
will also help
fuel economy.
Fuel Selection
Use only unleaded gasoline meeting the octane ratings given under "Fuel Requirements" in "Starting and Operating," Section 2 of this manual.
Unleaded gasoline must be used. for the. emission control ,system to operate
properly. Leaded gasoline will damage the Computer Command Control system
oxygen sensor and affect emission control. Using leaded gasoline can also
damage other parts of the emission control system and
CQuld result in 19s8 of
emission warranty coverage.
"Jackrabbit" Starts
You can save fuel (and prolong engine and tire life) by avoiding fast starts
away from lights and stop signs.
2-4

Downloaded from www.Manualslib.com manuals search engine FUEL CAP
The fuel cap is.behind the. rear license plate.
NOTICE: tt you need: to repWce the fuel cap, use only a cap with these same features as specifie your dealer.
The fuel tank filler cap has a "screw-on ratcheting type" feature .
• _ To remove -rotate cap counterclockwise to clear the inside of the filler
neck. This will allow any residual pressure to escape .
_ To install -reverse this procedure and tighten cap securely until a
"ratcheting ". clicking sound is heard indicating cap is on properly.
CATALYTIC CONVERTER
.Ttle .cal;!ly:tic converter is an emission control device added to the exhaust system,' to reduce exhaust gas pollutants. The converter contains
a ceramic material coated with noble metal catalysts. To prevent contamination
of the catalysts , unleaded gasol;"" must be used . Unleaded gasoline also
reduces spark plug louling. exhaust system corrosion and engine oil
deterioration.
The catalytiC converter requires the use of unleaded gasoline. Using leaded gasoline wilt cause --the converter to lose its effectiveness as an
emission control device. Leaded gasoline will also damage the Computer
Command Control, system oxygen sensor, which could affect emission control,
fuel economy . and drivability.
~,~.,y..'~,","~ ... :..., To help 'prevent damage:
1. Keep your engine properly maintained . Engine malfunctions involving the electrical, carburetion or ignition systems may result in unusually high
catalytic con verter and exhaust . sy~tem temperatures which, under
extreme malfunctioning conditions·, may ignite interior floor:"'covering
materials above the converter. Do not keep driving your vehicle if you
detect engine misfire, noticeable loss of performance ,or other unusual operating conditions. Instead. have it serviced promptly.
A properly maintained
engine will help avoid malfunctions that could damage
the converter.
~ will also help provide good emission control and fuel economy.
See the Maintenance Schedule , folder for information on inspecling and
maintaining the engine. exhaust system. and other components. .
2. Do not drive through or Idle or park your vehicle over combustible
materials, such as grass or leaves_ They could touch the hot exhaust
system and ignite.
3. Do not push or tow this vehiCle to start it. This may result in unusually
high catalytic converter and exhaust system temperatures which under
extreme conditions may ignite interior floor -covering material above the
converter.
Pushing or towing to start can also damage · the catalytic
converter itself.
Disregarding these
instructions could damage the cataly:tic converter. the
vehicle, or nearby property.
5-2

Downloaded from www.Manualslib.com manuals search engine COMPUTER COMMAND CONTROL SYSTEM
Your new vehicle has a special emission contrOl system, called the Computer
Command Control system. Some vehicleS sold in Canada also have the
Computer Command Control system. II your Canadian vehicle has a "CHECK
ENGINE" light,
it dOes have the Computer Command Control system.)
The Computer Command Control system monitors . the .exhaust stream with
an
oxygen sensor. Based on sensor signals, the electronic control module adjusts
the carburetor air-fuel ratio as needed. It is very important to use only
unleaded gasoline in vehicles equipped with the Computer COmmand Control
system . .Leaded gasoline will damage the oxygen sensor and may affect
. emission controL .
On
all vehicles with the COmpute r Command Control system, a "CHECK
ENGINE" ligtit
on the instrument panel is designed to come on during engine
starting, to
let you knowthe bulb .is working. (The light will stay on a'shdl1iime
after the. engine starts.) If. the light comes on while driving, service to the
Computer Command Control system may be. required. Although your vehicle
may
still be drivable,see yoyr dealer as SOon as possible for an inspection of
the system.
Continued
driving · Without having the Computer Command Control system
serviced could cause damage to the emiSsion control system. It could also aftect fuel economy and drivability. .. ..
ENGINE OIL AND FILTER RECOMMENDATIONS
Checking 011 Level ,>,-.. ,
The engine oil must be kept at the right level to. help assure proper lubrication
of your vehicle' .s engine.
It is the owner's responsibility to' cheCk the oil level at
regular': infervals '{such . 'as . "e~~Y"JHflLstop), according ·to ' the following instruct ions . It is normal for an engine-O to use Some oil, and most engines may
use
more oil when they are new . " .
• The best time to check' the engine Orffevel is when the oil IS warm, such as
during a
fuel stop. First, wait about 5 minutes for the oil to drain back to the oil pan. Then, pull out the dipstick on the side of the engine block (either
right or left). Wipe
it clean and. push the dipstick back down all the way.
Now,
pull out the dipstick and look at the oil level .on the dipstick.
Some dipsticks have "Add" and "Full" lines. Others are marked "Add lOt"
and "OperatlngRange ." In all cases, keep the oil level above the "Add" line_ Push the dipstick .oock down alilheway after taking the reading . Add oil , if needed . . .
• If you check the oil level when the oil is cold, do not iun the engine first.
The
cold oil will not drain back to the pan fast enough to give a tr ue oil
level. . .
Ch '
oosing the Right Quality on
Engine oils are labeled on'the containers with variOus API (Amercian Petroleum Institute) deSignations of·quality. Artewhigher-quality category of engine 011,
designation "SF", was introduced early in 1980. Be sure the oil you use has
the
API designation "SF," either alone or shown with other designations . Do not use oils labeled only SA, SB,SC, SO,' SE, CA, CB,CC, or CD; or oils
with a combination of any of these categories-like SE/CD.
5-3

Downloaded from www.Manualslib.com manuals search engine -. lap/ShOulder ..• light/Buzzer Reminder .. Pregn!lll1 Women ..
1-10 ,., ,.,
,.,
Rear Seal.. SeIr·~stiOg BrakE!S .. SENSOR Indicator:
......... 1-8. 1-9
Sensor, Oxygen .. serviCe & Maintenance Service Station Information .. CoVer)
_ 2-14 5·3 '·3 5·' (Irisioo' Back
ShOOt Metal Damage". Shoulder Belts .. Sidemarker ,lights.
4·5 (See "Seat Betts")
Signals. Turn .. Slippefy Surfaces, Driving On .. Snow Chains
Snow Tires _. Sounds (Buzzers. Tones,elc.) Disc Brake Wear Indicator.
Headlights On .. Key Reminder. Seal Bell Spare Tire
"""-Jacking Stowage Spark Plugs Sound Systems (Radios): Speakers .. Spatilicatlons
Speed,CrUise Control .. S~. New Car Break-In. Speedometer & Odometer Spot Cleaning Stainless Steel Protection. stains. RemOval' 01".,.; Starter Salety Switch Starting Emergency (Jump. Starting). Engine Fails to Start Gasoline Engine. Pushing to Start. Steering Column Controls Column lock. Power .. Wheel, Till Stereo. Radios & Tape Systems 2·29 Stowage 0( Tire & Jacl< Stowing Things In (Or (0) Gat StucfI. Car, Freeing. Sunrool ................... . Suspension Ball Joints Tachometer Tape Systems, Stereo T ernpei'ature Gage T~ature light Thefmostat
2-26,
7-4 2·' 2·' 5-15
5-15
2-15
2-21
. 2-7 ,.,
3-8 3·5 3·' 7-2
2-26 2-27
,., 2-12 2-2 2-15 4·2 4·4 4-3 2·'
3-, 2·' 2"8 5·2
2·6 2·6 2-11
2-11
2-28,
3·' '·2 3·' 2·30
5-10 2-18 2-27
2-19
2-17 5·' Tilt-Away Steering Whee! 2-11 TipS. Operating (See "Operating TIPS" TlreS) Air Pressure. 5-11
7·9
ChainS ..
-. Cleoning. 5-15 3-4,3-5,
U .; _ ... 4 .... 3·6 """-' -.. H..,·_ .. . ............. _ ..... _ ...... 5-12
Inflation Pressure. Load Capacity .. Load Range .. Overseas Use. Placatd .. PreSsur&,·Ait.,
Replacement WhOOIs .. Stowage .. Trailer Towing. Top Care, Vinyt .. Towing OisablOO Vehicle .. To start .. Trailaring .. Transmission
........ 3-4,3-5, 3-6 5-12 5-11 5-11 . ............. ; ... 2-4 . .......... _ ... 5-11 5-12 5-17 3~5. 3-6,3-7 1-12 ...
,., .._ .... : .. 3-9 1-12
Automatic .. (See ,'Automatic TransmiSSion") Transmitter, Mobile Radio .. Trip Odometer .• ... T,,... Driving With Trunk Open ......... 2-2 Key. 1-1 Release, power .................... 2·22 Turbochafgef Oil Change_. 3-33 Turbocharger Power ...... ....... , ........... 2-32 Tum Signals.. . .... 2-7 Unleaded Gasoline (See "Fuel") Upholstery Care _. . 4-I
Vehicle Identification Number 7-5 Vehicle Loading.. 5·11
Ventilation System.. 2-22 Vents, Outside Ail".. 2-22 VIN 7-5 Vinyl
Fabric Care Root Care .. Vollmeter ..
... 4-2 4-4 2-19
Warning Flasher, Hazard Warning. Lights .. '-3-1 (See "lights-:) (See WarrantY folder) Warranty Washers,· Windshield
Washing Car. Waxing & Polishing . Wear Indicators, Disc Brake
Weight, Load Carr'iiog. Wheel Changing Wheel Nut Torque
Whgels, Replacement
Wheal, Till Steering.
Windows Manual.
Pow~ Rear, Defogger .. Windshield
2-19
. .............. 4-4 ...... 4-4 ........ 2-15 5-11 3-5 . . 3-6 3-7, 7-2 5-17 2-11
Defrosting & Defogging ..... , ............. 2-25
Washer Use in Cold Weather .. 2·20 2-19 2-19 Washer Fluid .. Wipers & Washers
Wrecker Towing
Zone Offices .. ................. 3-9 6-2, 6-3