1991 FORD FESTIVA check engine

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Page 218 of 454

FORD FESTIVA 1991  Service Manual Broken clutch housingSee STARTER article
Pinion shaft rusted or drySee STARTER article
Engine basic timing incorrectSee Ignition Timing in TUNE-
UP article
Broken teeth on engine flywheelReplace flywh

Page 219 of 454

FORD FESTIVA 1991  Service Manual AIR CONDITIONING & HEAT 
AIR CONDITIONING TROUBLE SHOOTING 
BASIC AIR CONDITIONING TROUBLE SHOOTING CHART 
HEATER SYSTEM TROUBLE SHOOTING 
BASIC HEATER SYSTEM TROUBLE SHOOTING CHART 
Broken lead or lo

Page 221 of 454

FORD FESTIVA 1991  Service Manual ENGINE MECHANICAL 
COOLING SYSTEM TROUBLE SHOOTING 
COOLING SYSTEM TROUBLE SHOOTING 
Malfunctioning power unitSee POWER BRAKES or 
BRAKE SYSTEM
Partial system failureCheck fluid and pipes
Worn disc pa

Page 222 of 454

FORD FESTIVA 1991  Service Manual 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 223 of 454

FORD FESTIVA 1991  Service Manual Engine overheatingCheck cooling system, See 
COOLING
Auto. Trans. pressure regulator valve faultyReplace pressure regulator 
va l ve
Auto. Trans. fluid level too lowAdd fluid as necessary
Improper vac

Page 224 of 454

FORD FESTIVA 1991  Service Manual ENGINES
Valve "O" ring seals damagedReplace "O" ring seals, See 
ENGINES
Plugged oil drain back holesRemove restrictions
Improper PCV valve operationReplace PCV valve
Engine oil level too highRemove e

Page 225 of 454

FORD FESTIVA 1991  Service Manual bolts
Noisy Pistons and Rings
Excessive piston-to-bore clearanceInstall larger pistons, See 
ENGINES
Bore tapered or out-of-roundRebore block
Piston ring brokenReplace piston rings, See 
ENGINES
Pisto

Page 226 of 454

FORD FESTIVA 1991  Service Manual ENGINE PERFORMANCE 
CARBURETOR TROUBLE SHOOTING: 
BASIC COLD START SYMPTOMS TROUBLE SHOOTING CHART 
BASIC HOT START SYMPTOMS TROUBLE SHOOTING CHART 
BASIC COLD ENGINE DRIVEABILITY SYMPTOMS TROUBLE SHO