Fan Blower won't work

225

Asked by Oct 27, 2014 at 01:50 PM about the 1995 Dodge Ram 1500 2 Dr Laramie SLT 4WD Standard Cab LB

Question type: General

Heater fan will not blow air, just suddenly stopped.  Fuse is good, fan motor removed and connected to power and works fine.  Re-installed motor, ran direct power to it and runs fine.

Suspect faulty switch but don't know how to test to confirm.

22 Answers

61,395

Check the resistor first,this may be bad,dodge are bad for these burning out.

14 out of 14 people think this is helpful.
Best Answer
61,395

It is located under dash at blower box,right at motor.

12 out of 12 people think this is helpful.
225

Found it & removed. Is there a way to tell its bad? Or just buy a new one?

10 out of 10 people think this is helpful.
61,395

I think it can be ohmed,if you have ohm meter,you can all so test,by cutting blower on,and check for fire at it.if there is fire,then that will be the problem.

2 out of 2 people think this is helpful.
225

I checked it with my Ohm meter last night, got 0 readings across all terminals. So, from my limited knowledge and experience, that kind of Ohm reading indicates that the unit would be good. I don't completedly understand the rest of your answer. Are you suggesting that I leave the relay out, plug the wire harness back in, and turn on the fan to see if there is any reaction in the relay? If so, then it's good?

2 out of 2 people think this is helpful.
61,395

No, what i ment to say was check the wire,s coming into relay for fire,that would show switch is good,and if has fire at it,it is not going threw risitor.

3 out of 3 people think this is helpful.
61,395

To motor.

2 out of 2 people think this is helpful.
225

Ah-Ha! OK, will try that later. Will re-check the relay first, as I learned that I tested it wrong. Now I just gotta wait until lunch time so I can go home and test!

225

Well, tried the test method that was suggested, results indicate that relay is bad. Then I GOOGLE'd 'How to Test an Automotive Relay' and found some instructions. I used those, followed them as best I could, and it seems to indicate that the relay is good. OK, so then I called a local big named shop, all they wanted me to do was bring the whole vehicle in and they'd fix it. So, after work will just buy a new relay and put it in!

2 out of 2 people think this is helpful.
70

I replaced this in my truck and it changed nothing. What next?

7 out of 7 people think this is helpful.
70

If it's intermittent it's probably the ignition switch the connection goes bad because of the of the writing draw

7 out of 7 people think this is helpful.
60

i have the same problem but i replaced the fan, resister, and ignition switch and still nothing

6 out of 6 people think this is helpful.
140

Hey guys, I have a '03 Ram that was having intermittent problems with the fan and now no fan blowing at all. I have replaced the resistor and still nothing. Should I replace the relay next or the switch. Is it the fan switch that will need to be replaced or the ignition switch? Also, where is the relay located? Thanks for any help!!!

9 out of 9 people think this is helpful.
20

How do I ask a question I'm having problems and got to fix my self

2 out of 2 people think this is helpful.
140

I replaced the ignition switch and that seems to have worked!!!

5 out of 5 people think this is helpful.
10

The resistor values are: 0.5 Ohms between the common pin and H 0.75 Ohms between the common pin and M 1.5 Ohms between the common pan and L They can be a few tenths of an Ohm off. That plus your Ohm meter is probably not that accurate :-) My guess is that the 1.5 ohm one is a 40-50 watt resistor.

1 out of 1 people think this is helpful.
20

Where is the relay? I can't find it!

2 out of 2 people think this is helpful.
20

Relay is under glove box and is visible by just getting under it looking for a white resistor. Fan speed switch on the dash can also get gunked up with crud. I took mine out , cleaned all the old grease off replaced it with bulb grease or dialectric grease and put it all back and it worked perfect. Dodge wanted over 200.00 just to diagnose and maybe fix. Really easy to see if the grease has turned green and the contacts are all brass, so you just need to clean well and regrease.

2 out of 2 people think this is helpful.
30

Where is the IGNITION switch I keep hearing about?

1 out of 1 people think this is helpful.
30

Can someone PLEASEEEEEE explain what the IGNITION switch is and where is it? Thank you

2 out of 2 people think this is helpful.
20

Ignition switch is on the Left side of steering column, under the covering. Before going that route check the wiring to the blower fan it can be simply unconnected, or overheated and need replacing. It is in the foot well of passenger side and is very short wiring so can pull as well as be knocked off by someone's foot.

2 out of 2 people think this is helpful.
10

I have a 2005 dodge ram 1500 truck and when I used the ac it was really loud, now that its winter time it made a loud noise if turned on, but now it doesn't turn on at all. Any ideas what needs to be replaced?

1 out of 1 people think this is helpful.

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