Heater problem
1997 Jeep Wrangler 6 cyl Four Wheel Drive Automatic

My heater blower motor went in the spring. I didnt fix it or use it until a few weeks ago, when I finally fixed it. Now I don't have the blow power that I used to have! At first it wasn't working at all. Then we did something to one of the vac lines and it works a little bit now. ie: when it is on high it blows like it is on low. We don't know where to look. Is there something wrong with the vac line? or is there another line that we are missing?
Please help! it get very cold here!
thank you,
michele

Now do you have 3 speeds or just one? If you only have one speed then the blower motor resistor might be your problem. Get back to me and we will go from there.

I have 3 speeds, low med & high. Before the blower motor went in the spring it was working great. It would heat the whole jeep in 10 min in really cold weather. Now when its on high it sounds like low and there is very little blowing out, almost like something is blocking it. In fact, thats what we thought the problem was (it wasnt blowing at all at first) until we found the vac, and it started working to where it is now.

Ok so do all three speeds work now or is there only one speed now? There is no cabin air filter on this so that won't be a problem. Did you park the Jeep for a long period of time by chance? There isn't a chance that a critter built a nest in the heater box? Just checking I run into in more often then you think. Just trying to cover anything. Get back to me and we will go from there.

I don't think they all blow, and there is so little heat blown out when its on high-that is where I leave it.
I drove the jeep all summer long, I just never used the blower. When the old blower motor was in there I used it until it wouldnt work anymore, then summer was here so I didn't use it all summer. So of course as it started getting colder and I needed heat I had to replace it. So there is no chance that something built a nest in there.

Ok great I would like you to pull the blower motor resister and see if it looks ok. See the resistor sets the speeds and when the old motor was pushed to its max use it may have demanded to much voltage therefore the resistor did its job and blew on or more coils leaving you with one speed. Here is what yours looks like. It should be bolted to the heater box close to the blower motor. You can check for resistance with an ohm meter to see if there is continuity.

but we replaced the blower motor. my husband said that the resistor is in that.

Sorry no it is not it is in the heater box. It will be near the blower motor but it is not part of it. Look for the part that looks like the pic that I sent you and check it. Let me know what you find.

ok, we are going out right now to look it over.
also, my jeep has a/c that hasnt been used in years

so far this is what i have -
there is 3 settings - low, med & high. You can hear and feel the speed change when u turn the switch setting from lowto high. it just doesnt blow like it used to. and when u turn on the recirculate it blows louder, but it doesnt really come out anywhere that it should be - u cant feel it in the vents...