S-class W202 Mercedes

1993-2000 of release

Repair and car operation


W202 Mercedes
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
- 7. Ignition system
   7.2. Safety measures at repair of electronic system of ignition
   7.3. Ignition coils
   + 7.4. Spark plugs
   - 7.5. Device of a preliminary warming up of a diesel engine
      - 7.5.1. Check of the device of a preliminary warming up
         7.5.1.1. Filament lamp
         7.5.1.2. Anchor
         7.5.1.3. Glow plugs
         7.5.1.4. The temperature sensor of cooling liquid
         7.5.1.5. A temperature-sensitive element of soaked-up air
      7.5.2. Device self-diagnostics
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electroschemes


b47c026d b47c026d

7.5.1.5. A temperature-sensitive element of soaked-up air
GENERAL INFORMATION

The temperature-sensitive element takes temperature of soaked-up air. This size together with a signal of the sensor of pressure of the inlet gas pipeline serves for the actuation device as a measure of amount of soaked-up air. A temperature-sensitive element of soaked-up air is the NTC resistor (NTC = negative temperature factor) which resistance decreases at temperature increase.

ENGINE IN VOLUME OF 2,2/2,5 L

Removal

PERFORMANCE ORDER
Remove a temperature-sensitive element together with the tip (В17х1), for this purpose compress both lateral fixing a clip (1).

Check
PERFORMANCE ORDER
1. Disconnect the tip.
2. Check an ohmmeter resistance of a temperature-sensitive element at various temperatures. The measured size as it should be if it is in admission limits + 5 % (see the table Resistance of a temperature-sensitive element).
3. If at measurements the temperature-sensitive element does not reach preset values, it is necessary to replace it.

Installation

PERFORMANCE ORDER
1. Get the cable tip (socket).
2. Check on defects or porosity a sealing ring of a round profile, if necessary replace it.
3. Insert a temperature-sensitive element together with a sealing ring of a round profile.
4. Squeeze out fixing clips outside until it distinctly will (aurally) be fixed.

Resistance of a temperature-sensitive element

TEMPERATURE
RESISTANCE
20 ° With
9670 Ohm
30 ° With
6060 Ohm
40 ° With
3900 Ohm
50 ° With
2600 Ohm
60 ° With
1760 Ohm
70 ° With
1220 Ohm
80 ° With
860 Ohm
90 ° With
620 Ohm
100 ° With
185 Ohm