SAAB WIS ONLINE

INSPECTION

INSPECTION

Trouble Possible cause Corrective action
Over-heating

a. Insufficient engine coolant

Replenish the engine coolant, inspect for leakage, and repair.

b. Loose timing belt

Repair or replace the timing belt tensioner.

c. Oil on timing belt

Replace.

d. Malfunction of thermostat

Replace.

e. Malfunction of water pump

Replace.

f. Clogged engine coolant passage

Clean.

g. Improper ignition timing

Inspect and repair the ignition control system.



h. Clogged or leaking radiator

Clean or repair, or replace.

i. Improper engine oil in engine coolant

Replace the engine coolant.

j. Air/fuel mixture ratio too lean

Inspect and repair the fuel injection system.



k. Excessive back pressure in exhaust system

Clean or replace.

l. Insufficient clearance between piston and cylinder

Adjust or replace.

m. Slipping clutch

Repair or replace.

n. Dragging brake

Adjust.

o. Defective thermostat

Replace.

p. Malfunction of radiator fan

Inspect the radiator fan relay, engine coolant temperature sensor or radiator motor and replace there.

Over-cooling

a. Atmospheric temperature extremely low

Partly cover the radiator front area.

b. Defective thermostat

Replace.

Engine coolant leaks

a. Loosened or damaged connecting units on hoses

Repair or replace.

b. Leakage from water pump

Replace.

c. Leakage from water pipe

Repair or replace.

d. Leakage around cylinder head gasket

Retighten the cylinder head bolts or replace gasket.

e. Damaged or cracked cylinder head and crankcase

Repair or replace.

f. Damaged or cracked thermostat case

Repair or replace.

g. Leakage from radiator

Repair or replace.

Noise

a. Defective timing belt

Replace.

b. Defective radiator fan

Replace.

c. Defective water pump bearing

Replace the water pump.

d. Defective water pump mechanical seal

Replace the water pump.