Are you are talking about the block heater or the heater fan. It looks like a two part question. The block heater plugs into a house outlet. The cord starts at the front bumper area and goes to the block. A element goes into the block to heat the engine coolant. To trouble shoot: Power from the house plug in a lamp. Cord from the bumper to block heater, Inspect for damage & ohm out the wires. If all checks fine the block heater maybe defective. Now for the fuse. Is it blowing out all the time & does it go to the heater fan.
They could be, it depends on the vehicle. On a dodge truck with the Cummins diesel from 1989-2002 it is left-hand thread for example.They could be, it depends on the vehicle. On a dodge truck with the Cummins diesel from 1989-2002 it is left-hand thread for example.
Cummins
1989 was the first year of the Cummins.
There could be multiple reasons why a heater would stop working in a truck. There could be low coolant or a bad fuse to make a heater stop working in a truck. The best way to find out the reason is to take it to a certified auto mechanic.
The Cummins engine in a Dodge truck does not have glow plugs.The Cummins engine in a Dodge truck does not have glow plugs.
The Cummins in a Dodge truck did not get EGR until 2007 with the 6.7L.The Cummins in a Dodge truck did not get EGR until 2007 with the 6.7L.
The blend door could be sticking on the truck. The vacuum system could have a leak. Or the cables to the heat valve could be malfunctioning. Check these three areas to fine why your heater is stuck on hot.
take the fuel filter off. there is a threaded nipple that the filter was screwed onto. on th bottom of that there is a slot. i made my own tool out of a chisel and a rachet to get it out but a wide blade screwdriver or vise grips will work too. take that nipple out and the heater will fall off with it. then call cummins and get the nipple they sell for a single fuel filter setup (that motor probably came out of a medium duty truck. 6bt engines from equipment and such had dual filters you dont want that.) and install it in the housing without the heater. the nipple is just shorter and fits the cummins filter. then put on your cummins filter and your all done
The Cummins engine does not come with the cord installed unless the truck has the cold weather package. Normally you have to buy the cord from the dealer. It will go on the passenger side of the engine. The heater is in the block behind the oil filter.
Dodge cummins. By far
buy a cummins
not getting heat into cab not even enought to defrost windows i have changed the heater core an thermostat an back washed the core and still nothing