1981 CHEVROLET MONTE CARLO catalytic converter

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 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 AJt Cleaner. Ail CoricIitionor FOlK Season .. Mainten ance .. AM" Pressu-e. Tires. AM" Vents. Alterna tOf tGEN) l.ghl AUniIlUffi Cafe .. AM or AM-FM Radios Antenna Antifreeze . Appearaoc e Care . Ash1rays & Lignler s. Assistance. Owl"lef Automat ic Door Locks. Automatic Transmission CorwElfter ClUlch Maintenanr;e
"""'-OpefaJ .... '1 TiPS.: AKIe. Re ar Standard . lifnited-SHp . Babies. AesCraint 01 .. BaIt Joints .. fun..., E mergency S ta ring F reedom. Gas Caution ..• GEN 191I... .•.• Test Indicator ...
. ........ 5-9
2-24
5-11
5-12
2-23 ....... 2·17 ... 2:27. 2-28 2·29 (Seo "Coolant") ,.,
2·22 6·' ,.,
2·10 5-5 .. 2 -9 2 ·'
5 ·'
5·' 1·10. ,-" . 5·1 0
3 ·' 5-10 3·' 2-17 5·10 Betore Dr iving Your Vehide... \. Bells: Sea!....,.. . (See I'Se at Belts") Blower, Healer & Air Cond.. 2-24. 2-25
Body Da mage . 4-4
.. """ ~,. Pedal Travel Trailer Towing .... Warning Ught .
2·14 2-\4 H2 2-17
Breakers . <;ircui t. • ..... 2-21. 7·3 Bteak ..... Period. New Vehicle ..• 2·2 Srioj'!( Headlights 2·7. 2·21 Brighl Metal Cleaning 4-4
Bulbs & Fuses.. 7·3. 7-4 Bumpers & HiIC:·~s. '·13 ~ 'Jack Operation ...... 3-4 B.w:ers._ . (See "'SOunds'" CoirpJler Con"mand Cont rOl System:~ 2·\8, 5·3 Cop Coolant A ecovery Tant.: .. ................. , .. 5-6 F uel.. 5-2 f>o¥Iier Steefing.. _____ -._ ....... ...... 0<. _____ -5-9 Radiator ... 5·8 Capacity, Cargo Weight. 5-11 Capacities. FlUid:. 7- Car Break-In Period . New.. 2-2 . car -Chemicals ... carbon Monoxide cautJorI .... ___ 4·' 2·' Care & Cleaning. Appearance . . .. 4·' Cargo Capacity . 5-11 Cargo on Root . Carrying,. '·2 Catalytic Converter . . ..................... ....... 5-2 ~ Command Control System .. -2·18. , ·3 Chains. Tire .. 5·15
7-6
Changing Wheets & Tires .. _ Cl-£O< ENGtl'E light .. Chectlbt, DrillSf . Child Seals & Restr ainls Chrome Protection .. ag.yette lighter ... CirCUIt Beakers QtiZOtlS Band Raoio . C!earIing .. Clock.I .. Cloth Trim Care .. ClutCh . Converter
Cold W&ather Starting ....
3 ·4 . 3·5 2 ·18. 5-3 ,., I -tO. 1·11 ... 2·22 2·21 , 7·3 2·29 . ..... 4·' 2-22 '·2 2·10 2·8 ~ip""lt Plocedu.-e . . ... 6 ·1
Condi lioner, Air (See "All" Cooditioner"~ Cons umer Relation s ... Converter ClUtch Con...eJo: Mirror Cooling System Afltilreeze (CooIanI) .. Overheating R ecovery Tank Service,. Thermoslal . COfl"lefing Lights . CorTosion Pmlection. Countries. Oper-ating in Fo.-eign .. Courtesy lights CruISe Control Cus!omer Service . 5·6
3·3
3 ·4 ,
5·6 '·7 '·8 2·7 . . 4-5 2· ' 2·30
2·12
6·' Damage, Sheet Metal . 4·4 Detogger,Re..-WiNJoW.. 2-25 DelrOSlor. Windshield . 2·24. 2·25 Delay Wipers 2·20 Descending a· Grade 2-9 Ditlererlliai (Rear Axle) limited·Slip __ 5·9 ,Malt)l~O 5 ·9
Trailllfing. 1·1 2
Dimensions 7· , Oimn'\e( Switch, Head~L 2·14 O ipshCks A.utomalic Tfansmission .. . 5-4 Engine Oil 5·3 Power Steering. 5-9 Directional Signals.. 2-7 Disc Brakes 2·15 Door loc::ks . __ ................ 1-2 Orivet' Checklist 1-1 Driving Down S teep Grades .... 2-9 in OU'sty Areas . 5 .... on Slippery Surlaces .................... 2·9 Economy ripS. Fuel .............................. 2-4 E lectric· Po_oo QpIion$ .. (See "Power"') Electrical System Banerv .. S-1 0 Bulbs .. . ....... ...... .... ........... 7,4 Circuit Breakers ....... , ........................ , 7-3 Fuses:. 7·3 GEN (Genefalor) lighI ..................... 2· 17 Jump S tarting 3- Spark Plugs 7-2 Voltmeter . 2·19 Emetgency. In Case oj Bralle WCIIllWlg li!1Il .. Eroglne Hot light .. • .. 2·17 . 2·17