Pontiac Fiero 1988 Service Manual page 145

3-4 STEERING, SUSPENSION, TIRES AND WHEELS DIAGNOSIS
Improper Shifting (Automatic with Column
Shift)
1?
m
m
m
m
Inspect
Sheared shift tube joint or lower shift lever weld
Improper or loose linkage adjustment
Loose shift lever
Improper gate plate
L a s h In Steering Column
Inspect
and lower bracket
• I.P.-to-column upper
mounting bolts loose
• Broken weld nuts on jacket
© I.P. upper bracket capsule sheared
• Loose shoes in housing
• Loose tilt head pivot pins
• Loose shoe lock pin in support
• Loose support screws
• Column upper and lower bracket-to-jacket bolts
loose
• Loose lower bracket-to-adapter and bearing
assembly mounting screws
m Loose I.P.-to-jacket mounting bolts
Housing Scraping On Bowl
Inspect
• Bowl bent or not concentric with hub
• Cover and housing end cap not properly installed
Steering Wheel Loose
||tFj inspect
• Excessive clearance between holes in support or
housing and pivot pin diameters
Damaged or missing anti-lash spring in spheres
Upper bearing not seated in housing
Upper bearing inner race seal missing
Loose support screws
Bearing preload spring missing or broken
Steering W h e e l Loose (Every O t h e r Tilt Position)
Inspect
® Loose fit between shoe and shoe pivot pin
• Shoe not free in slot
Steering Column Not Locking In Any Tilt
Position
Inspect
Shoe seized on its pivot pin
Shoe grooves may have burrs or dirt
Shoe lock spring weak or broken
Steering Wheel Fails To Return To Top Tilt
Position
13
inspect
€> Pivot pins are bound up
• Wheel tilt spring is broken or weak
m Turn signal switch wires too tight
Noise When Tilting Column
jffiFj Inspect
• Upper tilt bumpers worn
© Tilt spring rubbing in housing
TURN SIGNAL SWITCH
This diagnosis covers mechanical problems only.
See page 8A-111-0 for turn signal switch electrical
diagnosis.
Turn Signal Will Not Stay In Turn Position
Inspect
• Foreign material or loose parts impeding
movement of yoke
• Broken or missing detent or cancelling spring
• None of the above, replace switch
T u r n S i g n a l W i l l Not C a n c e l
Inspect
• Loose switch mounting screws
• Switch or anchor bosses broken
• Broken, missing or out of position detent, return
or cancelling spring
® Worn cancelling cam
Turn Signal Difficult To Operate
Inspect
© Turn signal switch arm loose
• Yoke broken or distorted, replace switch
• Loose or misplaced springs
© Foreign parts and/or material
• Loose turn signal switch mounting screws
T u r n Signal Will Not Indicate Lane Change
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Inspect
• Broken lane change pressure pad or spring
hanger
m Broken, missing or misplaced lane change spring