Haltech E6X Manual DOS Version - Manual (Page 13)

E6X Manual
13
The MAP sensor is usually mounted high on the engine bay firewall or inner guard using two
screws and with the hose nipple facing outwards. Connect the sensor to the inlet manifold via
a short length of vacuum hose and fasten with either hose clamps or nylon cable ties. Connect
the sensor to the main wiring harness using the appropriate plug. (For 1 Bar sensors the plug
is green, for 2 and 3 Bar sensors the plug is orange). Avoid mounting the sensor below the
level of the fuel injectors, because fuel may collect in the vacuum hose and run down into the
sensor. The sensor assembly is weather-proof but it is good practice to mount the sensor in a
protected position away from moisture and heat.
1.3.2 Coolant Temperature Sensor
The ECU uses the coolant temperature to determine warm up corrections to adjust fuel
mixtures.
The coolant temperature sensor has a solid brass temperature-sensing tip. The coolant sensor
supplied is an industry standard component and some engines may already have provision for
this type of sensor.
The coolant temperature sensor is designed to screw into a threaded hole and protrude into the
engine coolant stream. For air-cooled engines, the sensor can be embedded directly into the
engine block or used to sense oil temperature.
Locate a suitable position on the engine which will allow the hole and thread to be machined,
and which gives access to the coolant stream. The sensor should be mounted after the engine
and before the thermostat in the coolant circuit. Since most engines have existing temperature
sensor holes, it is often possible to mount the Haltech sensor in one of these holes. A thread