3. Locate the heater control valve. It will be a plastic valve on the rear left of the engine compartment.
Various components check the heat in your vehivle, so a heater can energy poor for many reasons, and you desideratum to be versed the steps required to properly diagnose this puzzle.
Instructions
1. Analysis the coolant akin in the reservoir cistern and compare that equivalent to where the repair criterion says it should be. Whether it is not at that purpose, then add a 50/50 alloy of coolant and tap imbue until it is where it needs to be. Recheck the heater.
2. Atmosphere the upper radiator hose after running the van; custom a shop rag to prevent burning yourself. Whether the radiator hose is also laborious to squeeze, it money the thermostat is sticking shut. Exchange the thermostat and recheck the heater.
The heater is designed to cache you comfortable while driving in arctic conditions.When the heating course in your van fails, it can in reality accomplish driving a exhausting charge. It is exceptionally inconvenient when the temperature begins dropping and you compass no heat to direct you from Shuddering. It will have a main coolant hose going into it, one coming out to the firewall and another going back into the engine. Remove the input hose and the hose going into the firewall and connect the two using the coupler. Run the car until it is warm and check the heater. If it operates properly, replace the heater control valve.
4. Remove the heater control panel and verify that all of the connections are correct per the repair manual. The heater control panel is usually held on by a few screws located behind the bezel.
5. Check for any vacuum leaks by turning the temperature control knob and listen for a hissing sound that lasts longer than three seconds. If you hear a leak, trace the vacuum hoses using the vacuum guide in the repair manual.
6. Remove the temperature blend door, if all other items check out, and verify the door is not jammed or broken. Use the repair manual for steps to remove it as this varies from vehicle to vehicle.
