coolant FORD FESTIVA 1991 Owner's Guide

FORD FESTIVA 1991 Owner's Guide FESTIVA 1991 FORD FORD https://www.carmanualsonline.info/img/11/56935/w960_56935-0.png FORD FESTIVA 1991 Owner's Guide

Page 222 of 454

FORD FESTIVA 1991 Owners Guide GASOLINE ENGINE - MECHANICAL TROUBLE SHOOTING 
BASIC GASOLINE ENGINE - MECHANICAL TROUBLE SHOOTING CHART 
Overheating
Coolant LeakFill/Pressure Test System
A/C Condenser Fins CloggedRemove/Clean Conde

Page 230 of 454

FORD FESTIVA 1991 Owners Guide IGNITION SYSTEM TROUBLE SHOOTING 
Open coolant temperature sensor circuitTest sensor and wiring
Shorted W.O.T. switch in T.P.S.Disconnect W.O.T. switch, 
engine should start
Defective ECMReplace ECM
F

Page 251 of 454

FORD FESTIVA 1991 Owners Guide FUEL INJECTION TROUBLE SHOOTING 
Se ve r a l  High  F ir in g Lin e s
Fuel Mixture UnbalancedCheck Fuel System
EGR Valve Stuck OpenClean/Replace EGR 
Valve
High Plug Wire ResistanceReplace Plug Wire
C

Page 268 of 454

FORD FESTIVA 1991 Owners Guide  
Fig. 14: Typical Negative Backpressure EGR Valve
 
Courtesy of GENERAL MOTORS CORP. 
Digital EGR Valve 
The digital EGR valve operates independently of engine manifold vacuum. This valve controls EG

Page 345 of 454

FORD FESTIVA 1991 Owners Guide Back To Article 
HEAT ER SYST EM
1990-92 HEAT ER SYST EMS Ford Motor Co. 
DESCRIPTION 
The heater system consists of control panel, blower case, heater case, air control doors and ducts. The control p

Page 349 of 454

FORD FESTIVA 1991 Owners Guide Back To Article 
1991 AIR CONDIT IONING & HEAT
MANUAL A/C 
A/C SYSTEM SPECIFICATIONS 
SPECIFICATIONS 
DESCRIPTION 
This A/C-heater system is fully integrated to provide cooling, heating and ventilatio

Page 366 of 454

FORD FESTIVA 1991 Owners Guide Driven More Than 10 Miles Daily  
No Operating Conditions From Severe Service Schedule  
CAMSHAFT TIMING BELT 
The condition of camshaft drive belts should always be checked on vehicles which ha

Page 370 of 454

FORD FESTIVA 1991 Owners Guide BRAKE PAD WEAR INDICATOR 
CATALYTIC CONVERTER 
COOLANT (PROPYLENE-GLYCOL FORMULATIONS) 
ELECTROSTATIC DISCHARGE SENSITIVE (ESD) PARTS 
ENGINE OIL 
FUEL PUMP SHUTOFF SWITCH 
This switch stops flow of f

Page 374 of 454

FORD FESTIVA 1991 Owners Guide Back To Article 
SERVICE INDICATOR & WARNING LIGHTS
1988-92 MAINT ENANCE Ford Motor Co. Service Indicator & Warning Lights 
SERVICE INDICATOR & WARNING LIGHTS 
 
Fig. 1: Identifying Dash Gauges & W ar
Page:   < prev 1-10 11-20 21-30 31-40