Chevrolet CAMARO 1979 Service Manual page 35

HEATING AND VENTILATION TA-9 \
D I A G N
H E A T E R W I R I N G D I A G R A M
The hearer wiring diagran] s âfe part ofCbassis Elecrricâl
osts
Diagrams, located at reâr ofSection 8, ând should be referr€d
to for diagnosis of eleclrical problems in the heâler system,
H E A T E R T R O U B L E D I A G N O S I S
, , I N S U F F I C I E N T
H E A T I N G "
C A U S E
C O R R € C T I O N
Slos \rârming in car.
O b j e c r i o n a b l e e n g j n e o r
Incorrect ope.alion of controls. Advise
operator of proper operation of healer
conlrols. Explain operalion of vents
Check conlrol cable and blower
Check for seâl berween engine
compârtmenl and plenurn
Check for proper sealing between
âir inlel duct âssembly ând dash.
Locate ând seal any orher air leaks.
Check operarion and adjuslment of venr
Advise operaror of p.ope. operation of
Adlise operâtor to us€ blower lo force
air to rear seâl area.
Check 10 be sure fronl floor mat is
under floor mat relâiner al dash.
Obstruction on floor, possibl) wrinkled
or torn insulâtor mâieriâl berween front
Adlise operalor to use HI blower sp€€d.
Check radiaror and cooling sysrem for
leâks, corr€cl ând iill to proper
level. Run engine lo clear any air
lock.
Check engine lhermostati
replâce if required.
Check coolânt level.
Remove kink or replace hose.
Rerôove foreign mâreriâl if possible,
olherwise replâce corei can usually
be heard as squishing noise at core.
Adjun cable.
Check inslâllâtion ândlor adjustment
of air control or air-defrost
Cold drâfis on noor
Insutïcienl heât ro rear seal.
Lot\ engine coolant level - dfop in heater
air lemperature at all blower speeds.
Failure of engine cooling system to warm up.
Kinked heârer hoses.
Foreign malerial obsrrucling wat€r flow
lhrough heater core
Temperâlùre door (val!e) improperly
adjusled. Air doors do no1 operate.