2003 Dodge Truck blower motor

It is a 2003 (early 2003) Ram 3/4 ton with the Cummins Turbo Diesel.

Thanks for your help!

When I checked the green wire from the switch to the blower with the voltage meter on the ohm setting (a setting that beeps if under 100 ohm), I did get a reading that the wire was ok. If I can trust that test, I guess that's the answer then.

Should I be able to register voltage on the meter at the blower plug if I placed one end of the tester in the plug and the other on the ground by the right side battery? I would think this would be the right way to do it, but I thought I better ask.

Thanks Tim. The ignition switch solved the problem. Have a beer or two on me!

The truck seems to be having trouble switching to the defrost mode, so I may be back with some more questions on that in the future!

Tim. If you're stil out there, I have another problem I need help on.

My 2003 Dodge Ram with the 5.7 L Cummins will not start when it goes below about 50 degrees F. I need to plug in the block heater, then, after warming, it starts fine.

This is a headache to say the least.

I can rule out fuel.

I believe the fuel rail and air intake heaters are functioning as I can hear them cycle on/off after turning on the ignition and before starting. I also see the lights dim and the fan motor slow after the truck is started, which I think would suggest the air intake heaters are working. However, how do I check these are actually doing their job?

I had a blown fuse in the fuel heater that attaches to the housing of the fuel filter. However, this was replaced months ago and has not blown since. How do I check to see this element is working and is it even necessary for a cold weather start. I think this only keeps the fuel filter from gelling up, but I may be wrong.

Third, I've read where this is cause also by a faulty or worn out fuel control actuator. This repair seems easy enough, but the part is $150 so I want to make sure I'm right before replacing it. How do I check this out?

I don't see any white smoke upon starting that would suggest injector problems.

Since I won't be near an outlet at every stop all winter, I need to figure this out! I read about our Canadien friends starting these things down to 20 below without a block heater so clearly something is wrong here.

Any suggestions?

TR

Thanks, I will start there, but now I'm out of town so it may be a few days.

I took it to the dealer on Friday and they are telling me I have at least 2 bad injectors and that this is causing the starting problem. Not getting enough fuel to the cylinders to start. However, I'm confused by this logic. While the 'not enough fuel' arguement makes sense. Why would it not start if only two injectors are 'bad'. Also, how would they know if 2 are bad given they haven't opened up the fuel rail. Is there a code for this?

I asked if they had checked the other components and he said they had and 'they were all fine'. Just not sure I trust what is going on here.

The injectors are $500 each. Whew!

Thanks, TR