Volkswagen New Beetle. Manual - part 30

 

  Index      Volkswagen     Volkswagen New Beetle 1998-2008 year - service repair manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  28  29  30  31   ..

 

 

Volkswagen New Beetle. Manual - part 30

 

 

AIR CONDITIONING & HEAT 

AIR CONDITIONING TROUBLE SHOOTING 

Worn drive end bushing 

See STARTER article 

Damaged engine flywheel teeth 

Replace flywheel and starter pinion gear 

for damage 

Drive yolk return spring broken or missing 

Replace return spring 

Faulty ignition switch 

Replace ignition switch 

Insufficient clearance between winding 
leads to solenoid terminal and main 
contact in solenoid 

Replace starter solenoid 

Starter clutch not disengaging 

Replace starter clutch 

Ignition starter switch 

Replace ignition switch contacts sticking 

Starter Relay Operates but Solenoid Does Not 

Faulty solenoid switch, switch connections 
or relay 

Check all wiring between relay and 

solenoid or replace relay or solenoid as 

necessary 

Broken lead or loose soldered connections 

Repair wire or wire connections as 

necessary 

Solenoid Plunger Vibrates When Switch is Engaged 

Weak battery 

Charge or replace battery as necessary 

Solenoid contacts corroded 

Clean contacts or replace solenoid 

Faulty wiring 

Check all wiring leading to solenoid 

Broken connections inside switch cover 

Repair connections or replace solenoid 

Open hold-in wire 

solenoid 

Low Current Draw 

Worn brushes or weak brush springs 

Replace brushes or brush springs as 

necessary 

High Pitched Whine During Cranking Before Engine Fires but Engine Fires and Cranks 
Normally 

Distance too great between starter pinion 
and flywheel 

Align starter or check that correct starter 

and flywheel are being used 

High Pitched Whine After Engine Fires With Key released. Engine Fires and Cranks 
Normally 

Distance too small between starter pinion 
and flywheel 

Flywheel runout contributes to the 

intermittent nature 

WARNING:

This is GENERAL information. This article is not intended to be specific to 
any unique situation or individual vehicle configuration. The purpose of 
this Trouble Shooting information is to provide a list of common causes 
to problem symptoms. For model-specific Trouble Shooting, refer to 

 

1998 Chevrolet Pickup C1500 

GENERAL INFORMATION Trouble Shooting - Basic Procedures

  

BASIC AIR CONDITIONING TROUBLE SHOOTING CHART 

HEATER SYSTEM TROUBLE SHOOTING 

SUBJECT, DIAGNOSTIC, or TESTING articles available in the section(s) 
you are accessing. 

CONDITION 

POSSIBLE CAUSE 

Compressor Not Working 

Compressor clutch circuit open. 

..... 

Compressor clutch coil inoperative. 

..... 

Poor clutch ground connection. 

..... 

Fan belts loose. 

..... 

Thermostatic switch inoperative. 

..... 

Thermostatic switch not adjusted. 

..... 

Ambient temperature switch open. 

..... 

Superheat fuse blown. 

Excessive Noise or Vibration 

Missing or loose mounting bolts. 

..... 

Bad idler pulley bearings. 

..... 

Fan belts not tightened correctly. 

..... 

Compressor clutch contacting body. 

..... 

Excessive system pressure. 

..... 

Compressor oil level low. 

..... 

Damaged clutch bearings. 

..... 

Damaged reed valves. 

..... 

Damaged compressor. 

Insufficient or No Cooling; Compressor Working 

Expansion valve inoperative. 

..... 

Heater control valve stuck open. 

..... 

Low system pressure. 

..... 

Blocked condenser fins. 

..... 

Blocked evaporator fins. 

..... 

Vacuum system leak. 

..... 

Vacuum motors inoperative. 

..... 

Control cables improperly adjusted. 

..... 

Restricted air inlet. 

..... 

Mode doors binding. 

..... 

Blower motor inoperative. 

..... 

Temperature above system capacity. 

NOTE:

This is GENERAL information. This article is not intended to be specific to any 
unique situation or individual vehicle configuration. The purpose of this Trouble 
Shooting information is to provide a list of common causes to problem 

 

1998 Chevrolet Pickup C1500 

GENERAL INFORMATION Trouble Shooting - Basic Procedures

  

BASIC HEATER SYSTEM TROUBLE SHOOTING CHART 

BRAKES 

BRAKE SYSTEM TROUBLE SHOOTING

symptoms. For model-specific Trouble Shooting, refer to DIAGNOSTIC, or 
TESTING articles available in the section(s) you are accessing. 

CONDITION 

POSSIBLE CAUSE 

Insufficient, Erratic, or No Heat 

Low Coolant Level 

..... 

Incorrect thermostat. 

..... 

Restricted coolant flow through core. 

..... 

Heater hoses plugged. 

..... 

Misadjusted control cable. 

..... 

Sticking heater control valve. 

..... 

Vacuum hose leaking. 

..... 

Vacuum hose blocked. 

..... 

Vacuum motors inoperative. 

..... 

Blocked air inlet. 

..... 

Inoperative heater blower motor. 

..... 

Oil residue on heater core fins. 

..... 

Dirt on heater core fins. 

Too Much Heat 

Improperly adjusted cables. 

..... 

Sticking heater control valve. 

..... 

No vacuum to heater control valve. 

..... 

Temperature door stuck open. 

Air Flow Changes During Acceleration 

Vacuum system leak. 

..... 

Bad check valve or reservoir. 

Air From Defroster At All Times 

Vacuum system leak. 

..... 

Improperly adjusted control cables. 

..... 

Inoperative vacuum motor. 

Blower Does Not Operate Correctly 

Blown fuse. 

..... 

Blower motor windings open. 

..... 

Resistors burned out. 

..... 

Motor ground connection loose. 

..... 

Wiring harness connections loose. 

..... 

Blower motor switch inoperative. 

..... 

Blower relay inoperative. 

..... 

Fan binding or foreign object in housing. 

..... 

Fan blades broken or bent. 

 

1998 Chevrolet Pickup C1500 

GENERAL INFORMATION Trouble Shooting - Basic Procedures

  

BRAKE SYSTEM TROUBLE SHOOTING CHART 

NOTE:

This is GENERAL information. This article is not intended to be specific to any 
unique situation or individual vehicle configuration. The purpose of this Trouble 
Shooting information is to provide a list of common causes to problem 
symptoms. For model-specific Trouble Shooting, refer to SUBJECT, 
DIAGNOSTIC, or TESTING articles available in the section(s) you are accessing. 

CONDITION & POSSIBLE 
CAUSE 

CORRECTION 

Brakes Pull Left or Right 

Incorrect tire pressure 

Inflate tires to proper pressure 

Front end out of alignment 

See WHEEL ALIGNMENT 

Mismatched tires 

Check tires sizes 

Restricted brake lines or hoses 

Check hose routing 

Loose or malfunctioning caliper 

See DISC BRAKES or BRAKE SYSTEM 

Bent shoe or oily linings 

See DRUM BRAKES or BRAKE SYSTEM 

Malfunctioning rear brakes 

See DRUM, DISC BRAKES or BRAKE 

SYSTEM 

Loose suspension parts 

See SUSPENSION 

Noises Without Brakes Applied 

Front linings worn out 

Replace linings 

Dust or oil on drums or rotors 

See DRUM, DISC BRAKES or BRAKE 

SYSTEM 

Noises With Brakes Applied 

Insulator on outboard shoe damaged 

See DISC BRAKES or BRAKE SYSTEM 

Incorrect pads or linings 

Replace pads or linings 

Brake Rough, Chatters or Pulsates 

Excessive lateral runout 

Check rotor runout 

Parallelism not to specifications 

Reface or replace rotor 

Wheel bearings not adjusted 

See SUSPENSION 

Rear drums out-of-round 

Reface or replace drums 

Disc pad reversed, steel against 
rotor 

Remove and reinstall pad 

Excessive Pedal Effort 

Malfunctioning power unit 

See POWER BRAKES or BRAKE SYSTEM 

Partial system failure 

Check fluid and pipes 

Worn disc pad or lining 

Replace pad or lining 

Caliper piston stuck or sluggish 

See DISC BRAKES or BRAKE SYSTEM 

Master cylinder piston stuck 

See MASTER CYLINDERS or BRAKE 

SYSTEM 

Brake fade due to incorrect pads for 

Replace pads or linings 

 

1998 Chevrolet Pickup C1500 

GENERAL INFORMATION Trouble Shooting - Basic Procedures

  

 

 

 

 

 

 

 

Content   ..  28  29  30  31   ..