Where is the inlet air heater located on a Volvo?
In cold climate the intake air need too be preheated. This is either done for GE engines by the preheater which is located in the inlet manifoldor or for VE engines by the glowplugs that are mounted in the cylinderhead. The preheat function is activated/deactivated by the engine control unit via the preheat relay.
What is the fault code for a Volvo air heater?
FMI 3 – Voltage above normal or short circuit to higher voltage Fault code explanation: Faulty sensor / Faulty sensor circuit Fault indication: DCU: Engine warning in DCU display. CIU: Symptom: Preheat relay never activated. White smo Conditions for fault code: The voltage on pin B25 on the EMS 2 is h
What is a heater core on a Volvo?
A volvo heater core is a small radiator (matrix) that transfers heat from the engine-cooling system to your car’s air heating/ventilation system. The heater core is much smaller than the engine-cooling radiator in front of the engine. read on to learn more about how to replace a faulty heater core in a Volvo.
What is the operating voltage of the air heater sensor?
The sensor is an active sensor, i.e. the sensor must receive operating voltage. Pin B17 on the engine control unit provides pin 1 on the sensor with an operating voltage of +5 Volt. Pin 4 on the sensor is connected to battery negative via pin B18 on the engine control unit.
What does a pre heater do on a D12 truck?
When requesting tools, provide the appropriate part num- ber. Selected versions of the D12 are equipped with a pre- heater. Its purpose is to warm air in the intake manifold when starting the engine. This heated air eases starting at very low temperatures and reduces engine smoking when starting a cold engine.
What kind of coolant does a Volvo D12 use?
Good, Used ENGINE VNL COOLANT TRANSFER PIPE TUBE Off Of a Volvo D12 VED 12. Casting Unavailable…. Good, used fuel filter housing off of a Volvo D12.
Where is the flapper valve on a Volvo air conditioner?
The problem is the flapper door in the heater is not fully closed. There is an adjustment for this in the cable, just behind the heater control. If you remove the glove compartment, you can see the heater controls. The cable on the bottom controls the flapper valve for heat. The adjustable part of the cable is at the heater control.
How to remove the a / C heater from a Volvo?
1) Remove lower dash panels. Disconnect all cable sleeves (pop out) from cables at climate control unit. See Fig. 3. Remove 4 cables from damper levers. 2) Remove control knobs and blower fan switch button from A/C-heater control panel. Remove 2 screws and A/C-heater control panel front. Remove A/C-heater control panel. Disconnect light connector.