Mercedes S-class W202

1993-2000 of release

Repair and car operation

Mercedes W202
+ 1.2. The general data
+ 2. Maintenance service
+ 3. Engines
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
- 8. Fuel system
   + 8.1.1. Introduction
   - 8.2. System of injection of petrol engines A principle of work PMS A principle of work HFM
      8.2.2. Self-diagnosing of a condition of system of ignition and fuel injection
      8.2.3. Air flowmeter
      8.2.4. A temperature-sensitive element of a cooling liquid
      8.2.5. The gauge of soaked up air
      8.2.6. System of vacuum pipelines
      8.2.7. The fuel distributor with клапанными atomizers
      8.2.8. Klapannye atomizers
      8.2.9. The oxygen gauge (ljambda-probe)
      8.2.10. Diagnostics of malfunctions of system of injection of gasoline
      8.2.11. That it is necessary to know to the owner of the car with инжекторным the engine
      8.2.12. The Turbo-doctor
   + 8.3. System of injection and a food of diesel engines
   + 8.4. System of release of the fulfilled gases
+ 9. Transmission
+ 10. A running gear
+ 11. A steering
+ 12. Brake system
+ 13. A body
+ 14. An electric equipment
+ 14.2. Electroschemes

8.2.5. The gauge of soaked up air

The temperature-sensitive element takes temperature of soaked up air. This size together with a signal of the gauge of pressure of an inlet gas pipeline (PMS-management system) serves as criterion of an estimation of quantity of let in air. Тремодатчиком soaked up air the NTC-resistor (NTC – negative temperature factor) which resistance decreases at rise in temperature is.

The temperature-sensitive element is located on a left-hand side of a cross-section pipe of the air filter.


Remove a temperature-sensitive element together with штеккерным a socket, for this purpose compress both скобы (arrows).


1. Remove штеккерный a socket.
2. Suspend a temperature-sensitive element in a water bath and slowly heat up it.
3. Check up an ohmmeter resistance of a temperature-sensitive element. The measured value is considered normal if it is in the admission of 5 % (see the table Resistance of a temperature-sensitive element).
4. If at measurements the temperature-sensitive element does not reach preset values, it is necessary to replace it.


1. Spread штеккерный a wire socket.
2. Check up on absence of damages and porosity a sealing ring of round section.
3. Insert a temperature-sensitive element with a sealing ring. Squeeze out outside скобы until they will not be fixed with click.

Resistance of a temperature-sensitive element

+10 WITH
Apprx. 9670 Ohm
+20 WITH
Apprx. 6060 Ohm
+30 WITH
Apprx. 3900 Ohm
+40 WITH
Apprx. 2600 Ohm
+50 WITH
Apprx. 1760 Ohm
+60 WITH
Apprx. 1220 Ohm
+70 WITH
Apprx. 860 Ohm
+80 WITH
Apprx. 620 Ohm