An overview of the cooling system of the Saxo TU3JP (1.4 including VTS) with and without air conditioning.
Figure : b1gp032p
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Sensors
2 - Thermal switch temperature sensor lights the temperature warning light at 118 degrees celcius
3 - Temperature sensor for the fuel injection system
4A - Temperature sensor for the cooling... 2 Comments
This article provides all manner of information on the technical specifications of the range of gearbox fitted to the Citroen Saxo, including part numbers, gear ratios, oil capacity, etc.
Oil capacity
After draining : 2 litres.
Check levels every 37,000 miles.
SAE 75W-80W GL5, see: Castrol Syntrax
Cooling System Overview
The purpose of the cooling system is to draw the heat of the engine away and to either heat the inside of the car via the heater matrix or to cool it.
Following a cold start the coolant circulates around the engine block and cylinder head spreading heat around the engine. The thermostat is closed preventing this hot... 1 Comments
Overview
The Bosch ME7.4.4 and M7.4.4 ignition-injection ECUs have been developed to control the following functions:
• engine torque,
• sequential multipoint injection,
• twin static ignition,
• cruise control (optional),
• L4 (EOBD)*/K'/ifL5 depollution standards,
• engine cooling,
• dialogue with the other ECUs on the CAN...
Overview
The catalytic converter is designed to reduce, by catalysis, unburned pollutant gases at the exhaust:
• CO: carbon monoxide
• HC: hydrocarbons
• NOx: nitrogen oxide
Catalysis is a phenomenon which, by using a catalyst, encourages chemical reactions without the catalyst itself being involved in the chemical reaction.
As it deals...
The carbon canister contains an active carbon filter. It is located between the fuel tank and the canister bleed electrovalve and is located in the Saxo driver's side wing (RHD).
The fuel vapours in the fuel tank are absorbed by the active carbon.
This aim of this function is to prevent:
• the pressure rising in the fuel tank,
• vapours...
This sensor is of Hall effect type and is located on the gearbox output. It is supplied with +12 V.
..
This sensor transmits information which, along with the engine speed, is used to determine the gear engaged.
This information is used to:
• improve driving pleasure (engine hesitation),
The throttle potentiometer is located on the throttle housing.
Supplied with +5 V by the ECU, this potentiometer transmits a variable voltage to the ECU which is a function of the position of the throttle (driver's wishes).
This information is used for recognising no load and full load positions and transitories for acceleration,...
The main supply to the system is by means of a double relay, which provides 3 operating states:
• ignition off:
− the power to some system components such as:
. the injectors,
. the ignition coil,
. the fuel pump,
. the canister bleed electrovalve,
. the oxygen sensor heating resistors,
. the air pump relay (specific to ifL5 depollution),...
The engine speed sensor consists of a magnetic core and a winding.
It is positioned opposite a ring on the flywheel with 60 teeth, 2 of which have been removed in order to determine the TDC (top dead centre) position.
When the teeth of the flywheel pass in front of the sensor, a variation in magnetic field is created. This variation...