Condition: Starter Fails To Operate (Or Operates Very Slowly); Condition: Starter Motor Operates But Engine Does Not Start - Volvo 760 Owner's Manual

1987 Volvo 760
dealer only.

Condition: Starter fails to operate (or operates very slowly)

Possible cause
Weak battery or dead cell.
Loose or corroded battery cable terminals.
Open circuit between starting (ignition) switch
and starting (ignition) switch terminal on
starter.
Starter motor defective.
pg. 85 Service diagnosis

Condition: Starter motor operates but engine does not start

Possible cause
Intake system leaking.
No fuel reaching engine.
file:///K|/ownersdocs/1987/1987_760/87760_05.htm (17 of 20)12/30/2006 7:55:34 AM
Correction
With the starting (ignition) switch in the "Driving" or
"On" position, check to see if the warning lights on the
dashboard come on and if they stay on when the starter
is engaged.
If the lights do not come on or if they go off when the
starter is engaged, the battery is discharged, or see
below.
Check the battery terminals and clamps. Clean or
replace if necessary. Check that the starter cable is
secure at its terminals.
The ground strap, which connects the body to the rear
of the engine, should also be checked for corrosion or
looseness.
The circuit is closed if a clicking sound is heard from
the starter when it is engaged. If no clicking sound is
heard, check that the blue wire at the starter is secure.
If still no clicking sound is heard, the starting
(ignition) switch or the wire is defective.
If the above checks have been performed, and no fault
is evident, the starter may be defective.
NOTE: In this case the headlight intensity will not
decrease when the starter is engaged.
Correction
Check vacuum hose connections at manifold and
auxiliary air valve.
Check for fuel in the tank.
Check fuses No 1 and 11.