VW Golf manuals

Volkswagen Golf Service & Repair Manual: Is the smell coming from evaporator or the heat exchanger?

Fishy smell
–  Due to leak in engine's cooling system or in heat exchanger of heater and air conditioner unit.
  Note
If the fishy smell is weaker when the temperature is set to “cold” or stronger when the temperature is set to “warm”, check the heat exchanger for leaks.
Smell of a burnt clutch
Vapours from foot mats, retrospectively installed seat covers etc.
Putrid, mouldy smell
–  Due to accumulation of leaves, pine needles etc. in plenum chamber.
  Note
Clean plenum chamber.
–  Use water so that it cannot flow out of plenum chamber.
  Note
Check water runoff points in plenum chamber.
Smell from heater and air conditioner unit
  Note
Smells that can originate in heater and air conditioner unit can be detected in fresh air mode and in recirculation mode.
–  Due to too much condensation water in heater and air conditioner unit
  Note
Check the runoff points of condensation water → Rep. gr.87 as indicated in the vehicle-specific repair manual.
–  Due to an old or very dirty dust and pollen filter
  Note
Check the dust and pollen filter → Rep. gr.80 as indicated in the vehicle-specific repair manual.
–  Due to deposits on the fins of the evaporator
  Note
Clean the evaporator, using the ultrasonic air conditioner cleaning unit -VAS 6189A- → Chapter or the suction feed spray-gun -V.A.G 1538- and corresponding spray lance → Chapter.
   
Smells from heater and air conditioner unit
...

Ultrasonic air conditioner cleaning unit -VAS 6189A
The ultrasonic air conditioner cleaning unit -VAS 6189A- must be placed in the front-passenger footwell and sprays the agent Aero-Clean. Aero-Clean neutralises microb ...

Other materials:

Removing and installing rear interior light/reading light
Removing   Caution Danger of damage to component surfaces. When using leverage tools, mask visible areas of the component with commercially available adhesive tape. ...

Air conditioner compressor without magnetic clutch
The air conditioner compressor is driven by a V-belt from the engine. A shear link is incorporated in the air conditioner compressor V-belt pulley. In the event of stiffness in the air conditioner compressor, it shears off and protects t ...

Aligning exhaust system free of tension
Procedure The exhaust system must be aligned when cold.   Note The -arrow- points forwards.     –  Loosen bolt connections for front clamp ...

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