1981 CHEVROLET MONTE CARLO check engine light

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 COOL
WARM
Add just enough DEXRO~ II fluid to fill the transmission to the proper level. It
takes only 0.5 liter (one pint) to raise the level from "Add" to "Full" with a hot
transmission.
Automatic Transmission Drain Intervals
Change the transmission fluid and change the filter (or clean the screen) as
outlined
in Section A of the Maintenance Schedule folder.
ENGINE COOLING SYSTEM
Your vehicle has a coolant recovery system. Coolant in the system expands
with heat and overflows into the recovery tank. When the system cools down,
coolant is drawn back into the radiator.
The cooling system was
filled at the factory wrth a quality coolant that meets
GM
Spec~ication 1S99-M . The cooling ·system is designed to use coolant (a
mixture of water and ethylene glycol antifreeze) rather than plain water. The
coolant solution should be used year round.
It has many advantages, such as:
~ provides freezing protection down to -3rC (-34"F) "''''''<~. !'"","."" ' • provides boiling protection up to 12S"C (262"F),
• protects against rust and corrosio~in th~ cooling system,
• maintains the proper engine temperature for efficient operation and
emission control, and
• allows proper operation of the coolant temperature light or gage :
See Section A of the Maintenance Schedule folder to find out when the coolant
must
be ·replaced.
Cooling System Care
Check the c60ling system at regular intervals, such as during fuel stops . You usually do not need to remove the radiator cap to check the coolant level. Lift
the engine hood and look at the "see through" coolant recovery tank. When
the engine is
cold, the coolant level should be at the "Full Cold" mark on the
tank . When the engine has fully warmed . up, the level should be above the
"Full Cold" mark on the tank . If the coolantl6vel is low, remove the cap on the
coolant recovery tank. Add to the recovery tank enough of a 50/50 mixture of
water and a good quality ethylene glycol antifreeze to bring the
level up to the
proper mark. Put the cap back on the recovery tank.
Certain conditions, such
as air trapped in the system, may affect the coolant
level in the radiator. You should check"the coolant level in the radiator at the
time you change the engine
oil and when the engine Is cold. Follow.taps I, S,
9, and 10 under "Coolant Repfacement" for the correct way to remove the
radiator cap and add coolant.
5-6

Downloaded from www.Manualslib.com manuals search engine 4. Close the drain valve. Install the block drain plugs, if removed. Add water
until the system is
filled and run the engine until the upper radiator hose is
hot
again.
5. Repeat steps 3 and 4 several times until the drained liquid is nearly colorless.
6. Drain the system, then close the radiator drain valve tightly. Install block
drain plugs, if removed.
7. Disconnect all hoses from the coolant recovery tank. Remove the recovery
tank
and pour out any fluid. Scrub and clean the inside of the recovery
tank with soap and water. Flush it well with clean water, then drain it.
Reinstall the recovery tank and hoses.
8. Add enough water and ethylene glycol antifreeze (meeting GM
Specification 1899-M) to provide the required cooling, freezing and
c()rrosion protection, Use a solution that is at least 50 percent antifreeze out no mOre than 70 percent antifreeze. Fill the radiator to the base of the
filler neck
and fill the coolant recovery tank to the "Full Hot" mark. Put the
recovery tank cap back on.
9. Run the engine, with the radiator cap removed, until the upper radiator
hose is hot.
10. With the engine idling, add coolant to the radiator until it reaches the
bottom of the filler neck. Install the radiator cap, making sure the arrows on the cap line up with the overflow tube.
iI is the owner's responsibility to,
'. -Main)!!!n cooling system freeze protection at -3rC (-34'F) to ensure protection against corrosion and loss of coolant from boiling. (A 50/50
mixture of water and ethylene glycol antifreeze will provide freeze
protection to -37'C or -34'F.) You should do this even if you don't
expect freezing temperatures.
• Add ethylene glycol base' antifreeze that meets GM Specification 1899-M
when antifreeze haS to be added because of coolant loss or for more
protection against freezing at temperatures lower than -37'C (-34'F).
NOTICE: Do "otute methanol-base antifreeze, Of alcohol,or plain water alone, in your vehicle at any time. They will boil at a lower point than that at which the "TEMP"
light (or temperature gage) will warn of overheating,. and they do not provide proper protection against cOrrosion.
Radiator Pressure Cap
The radiator cap, a 105 kPa (15 psi) pressure type, must be installed tightly,
otherwise coolant may be lost and damage to engine may result from
overheating. Radiator pressure
caps should be checked periodically for proper
operation. If replacement is required, an AC cap is recommended.
Thermostat
The engine coolant temperature is controlled by a thermostat. It stops coolant
flow
through the radiator until a preset temperature is reached. This thermostat
is installed in the engine
coolant outlet on the engine block. The same thermostat is used in both winter and summer. When a replacement is needed, AC"Delco parts are recommended.
5-8

Downloaded from www.Manualslib.com manuals search engine CAUTION': It" the alr 'l;lMner i, ren;oveci during repair or maintenance, bel"'re to put H bl,ck on'eQr~ctly. It the air cleilner Is 'not correctly Inltalled. there could bea fire in the engine compertment (It there ~Id h..,.,en to be a backfire) , or other engitie mallunc1lon .
Front Suspension and Steering Linkage
Lubric;lte fi tngsatlhEj ' intery;>1 showninthe Maintenance Schedule with water
resistant
EP Chassis lUb(icantwhich meets GM SpecifICation 6031M.
NOTICE: ,Ball ' joints, should "not be . lubrieak.d unlesS, their temperature il -12"C (10"f},or higher,During ,coldweather, theyahould" .. ~"al,)c)~ to,warm up al nece ... ry ,before being lubricated or damttge to the baH jOint-Could occur. . , ' '.' "
.. ,. fIRnl 'N. c~~~arings
Clean and repack front wheel bearings with a high melting point wheel bearing
lubricant . at the interval shown in the Maintenance Schecule. Use wheel
' bearing lubricant GM Part No. 10 5~ 344 or equivalent.
NonCE: ," Long fiber " or "vbeou.'-' type"iubricenf ~kI nol be used, Do not mix wheel ~irinQ"lUbricant., Be sure to thoroughly c5aan bearings and hubl of all old lubricant before repacking.
Tapered roller,bearings uaed'h'Hhis 'veh icle have' .. sUghtly looSe teel when properly adjusted, They must never ~ over tightened (preJoaded) or sev .... bearing damage may resuit. Con.utt your,Authorized Deektr or Servi<:e.r.enual tor peper detailed adjustment procedures and specifications. . '~". :...,"" .... ~"";~f>"'~"'-"'''''',','',' ,::, Hood tlltchesand.Hood Hinge
At the interva l shown in the Maintenan ce Schedule lubricate hood latch
assembly
and hood hinge assembly as follows :
1. Wipe off any accumul"ti~!).ofqirt Qfoontaminationon latch Pi1!'ts.
2. Apply Lubriplate . or equivalent to latch pilot bolts and latch locking
plate .
3. Apply light engine oil to all pivot paints in release mechanism, as well
as primary and Secbndary latch mechanisms.
4. Lubricate hood hinges .
5~ Make hood hinge and latch mechanism functional check to assure the assembly is working COfTectiy.
Freedom Battery
Your new vehicle has a Delco FREEOOM battery. It neecs . no periodic
maintenance .
Its top is permanently sealec (except for two small vent holes) and has no filler capS. You will never have to add water.
The hydrometer (test indicator) in the top of the battery provides information for
testing purposes only.
For full power needs at replacement time, a Delco battery wijh the same catalog number as shown on the original battery's labe l is recommended ..
CAUTIQN: ",' FOllOW the precautions listed in the' Jump Starting ' 'Caution (see ' Ihe "In Case of EmergenCy " settlon of this manual) when workmg On or 08. a bMtery. Personal Injury {particularly to eyea} or 'property damage may result from battery e~ battery acid, or electrical (short circuit) burns.
5-10

Downloaded from www.Manualslib.com manuals search engine FUSES AND CIRCUIT BREAKER
The wiring circuits in yoUr 198 -1 Chevrolet are protected from short circuits by
a
combination of fuses, circllit breakers, and fusible thermal links in the
wiring itself. This greatly reduces the hazard of electrically caused fires in the
automobile. The fuse junction block is located under the left side of the
instrument panel .
The headlight
wiring is protected by a circuit bre a ker in the light switch . An
electrical overload
will cause the lights to go on and off, or in some cases to
remain off. If this happens, have your headlight wiring checked right away.
Be sides a fuse , the windshield wiper
motor is also protected by a circuit
breaker .
If the motor overheats, due to over load ing caused by heavy snow,
etc
., the wiper will remain stopped until the motor cools. Be sure to have th';·
cause of the overloading corrected.
Also , a
circuit breaker , on the f~se. panel, protects the power window, power
seat , rear
window defogger (elec.) and oth'9rcircuits when vehicle is so
equipped. Where current load is too heavy , the circuit breaker intermittently
opens and. c loses , protecting the circu it until the cause is found and
eliminated.
Fuses, located in th .e Junction Block beneath the dash on the
driver'S side are:
Fuses
Instrument Lamp , Heater Dial, Audio Alarm ........................ 5 Amp
Electronic Control Module. . . . . . . . . . . . . . . . . . . 10 Amp Cru ise Control ,Rear Defogger , Gages , Warning
Lamps, Warning Buzzers, Closed Loop
......................... 20 Amp
License , Parking
Lamp, Sidemarker Lamps, Tail Lamp ............. 20 Amp
Heater ,
AIC ................................. _ ................... 25 Amp
W iS Wiper ..... · ................................................. 25 Amp Stop Lamp ,Hazard Lamp, Courtesy Light, Dome Light,
Glove
Box Light , Underhond Light ............................. 20 Amp
Luggage Lamp, Lighter, Clock, Key .Warning Buzz er, Dome & .
Read Light, Power Antenna , Closed Loop ....................... 20 Amp
Radio, Delay Wiper ,
Idle Stop Sol. .............. _ ................. 10 Amp
Back-up Lamps, Dir.
S ig. Lamps ................................. 20 Amp
Choke Heater ............. .............. _ ............... ........ 20 Amp
7·3

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

Downloaded from www.Manualslib.com manuals search engine Freeing Vehicle When Stuck . Hazard Warnong FlaSher Jacking Jump Starti ng
Towing: Cru EtIlIssion Caution EmISSic:m Control
3·9 3·' 3·4, 3'5
C ata lytic Conve rter 5-2 ~te< Command ContrOl System 2·18. ; ·3 CHECK ENGINE ligh t Exha ust Ga s Caution
F uel Requ irements (Gas) E",,~
2·18. 5·3 ,., , .,
... " Break -In Code Coo~ng
(See Ma intenance Schedule) 2·2 , .; ;·6 El ,.,
.. , 2·9 ,.,
(See "Fuel") ' ·5 . .. 3·1 Ideflti hcation Jump Starting . C>r Overheating . Spec~fcations Starling . Cold WeaHJeI Star ting (Gasoline) Temperature Gage Tempera ture 19h1 Thermostat E OOIN E ligh!
{See ··Oir . . EllIjne··) 3·3 ,., ,.,
'·6 2·t9 2· 17 5·6 2·t8 El"9oo Oil. (See ·'Oi l. E'ngine.') E thylene Glycot Antifree ze
E)(hausl Gas Cau tion E~~. System , If'Ispection. Ederior Fnsh Care .
Fabric Care
Fan,
Healer & Air Cond FASTEN SEAT BELTS Light. . Fastener s. RepIacemeflI .. Fifter s
Air Cleal'lEl!' . , Finish Care. Firish Damage . Flammable C\e.aoets .. .. F lashers Hazard w arning . Turn Signal..
Flooded EngIne . Starling . Floor Controls .. F luid Capacities .. FM Radios .. Folding Seats ...
5·' ,.,
, .,
... . 4·4 ,., 2-24. 2·25 '·6 5 ·'
;., ,., ,., . . • -1
3·.1 ..... 2:7 . ....... , 2·9 ......... 2·13 ..... ..... 7·1
F Ofeign CounlrllltS . Operation in ... FOUl' Season Ioit ~ . Four·WayHazard FlasheI' ... Freedom Battery .. Freeirig Car When Stt.JCk.". , .... Cop . Economy Tips .. Gogo Gasohol .. a...... Octane RaIing ..
;., , ., . 2 ·15 . '. ..... 2-3 ....... .. . 2-3
7 ·7
Overse3$ OpefatiOtl _. Tanl( Capacity Fuse
Cha rt
Circuit Breakers ...
""'" Engrne Temperat lJ'e
Fuel.. Oil Prossure Tachometef (Engille $peed) Voltmetet' , .. Gasoline
GEN (Gener ator) Light
Glas s Clea ning
Gto"e 80)( Guard AQaIIlSl Theft Hazar d Warning Flasher Headlight s Circuil &eakel IJimmtIf Switc h
instrument Pa~ SWitch Light s ON Reminder .. Head Restraint s .. tEAT Light. Heated Rear Wmdow .
2·' ,.,
'·3 '·3
2-1 9 2-15 2·19 2·18
2· 19
(See "Fuer') 2-\7 ..,
2-16 ,.,
3'
.7-3 2,14 2--?1
2-21
'·5 2·17 2·25 Heat er/Air Condihoner2·23. 2-24 High ·Beam Head~ghl!i 2-2t _ 1·13 5·10 . (Inside Back Colter) 5·10. !Inside Sack Cover)
Hitches. Traile( . Hood Latches .. Hood Release . Horn .. HOT UghL Ideotihcation Nt.mbers 19r>ilion K9YS Lock . In Case of EIT1efgenc:y .nocator lights ... Infant Seats & Aestra.nt .. II1l1ati04'l Pressure. Tires. Inlets . Air.
2-t3 2·t7 7.·5
,.,
2·' ,., (See "UghIS") 1 ·10. r_ll 5·12 2·23 Inside Rearview Muror , '-3 Instrumetl t Pan&! & Controts .. 2·15 InleilOl Appe«i¥1Ce Care.. 4-1 Interior & inst rumen t Lights (See "Lights" ) Jacl:: Operation & Stowage.. 3- 4. 3 ·5 . 3-6 ~ S\aI1ing .. 3- 1 Keys...... '·1 Lane Ct\ange &. Turn Signals 2-7 Lap- Shoulcler Belts . (See "Seat Bells") L_
,_­Hood ...
,..
(Inside 8acto: Cover) Sealback. From. 1-4 Trunk . 2-22 lighter. Cigarette ... 2·22 ligh<' BRAKE .... ...................... .................. 2·1 7
Bright s On. !lui> c.... O£CI( ENGINE Choke Warning .. Comoring .................. . CouttKY·· ClimrneI-Swoi1ch. HNdigflt .. Electrical S)Stem (GEN) ..
2-21 ,..
2·18.,5·2 2-17 .. ....... 2-7 '·30 2-1. 2-11

Downloaded from www.Manualslib.com manuals search engine SERVICE STATION INFORMATION
Refer to "Service and Maintenance,"
Section 5 for Further Details
Fuel Cap -Localed behind the license plate.
See fuel cap removal procedl,lre on page 5-1.
Fuel Requirements -Use unleaded gasoline only. See "Fuel Requirements "
in "Starting and Operating. " Section 2 of this manual.
Hood Release - Located beneath the instrument panel to the left of the
steering column. To open, pull the handle to release the hood lock. Then push down slightly on the hood while lifting the underhood lever , and raise the hood. (See illustration).
Engine Oil Oipstiek-Located on right or left side of engine block depending on engine model. Check the engine oil level when the oil is warm, such as during a fuel stop. Keep the oil level above the "Add " line on the dipstick .
Engine Oil Recommendation (Gasoline Engine) -Use only SF-quality oils. (See "Service and Maintenance," Section 50f this manuaL) The chart on page 5·5 will serve as a guide for choosing the proper viscosity oil.
Tire Inflation. Pressures -Check at least monthly (including the spare, unless it is a stowaway spare). Keep them inflated to pressures shown on
the Tire Placard on the left door. (Keep compact spare tires inflated to 415 kPa or 60 psL)
Engine Cooling System -Check the fluid level in the "see·through " coolant recovery tank at regular intervals , such as during a fuel stop. (See "Engine Cooling System " in "Service and Maintenance, " Section 5 of this manual.
Windshield Washer -Check reservoir fluid level regularly. Use a washer fluid, such as GM Optikleen .
Battery -Your new car has a Delco FREE[X)M It battery. You will never have
to add water. The hydror:neter (test indicator) in ,the cover provides infor­mation for testing purposes only.