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A/C blower only works on high
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tonya renee
Novice
Mar 5, 2009, 1:21 AM
Post #1 of 20
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A/C blower only works on high
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My A/C blower didn't work at all but the condenser would go on if I move the switch. I changed the resistor and it works great but only on high. I'm told there is a reostat somewhere but can't find it ???? anyone know where it is? Oh yea! I have a 2001 Saturn SL2, I guess its important to know that.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 5, 2009, 3:26 AM
Post #2 of 20
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Re: A/C blower only works on high
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The resistor is acting as a rheostat? From fan not working at all to only on high now I suspect the motor may draw too much and could have blown the new resistor already. Are connections good or any signs of overheated wire?? Not sure on this. Might be the selection switch but at the moment it's classic for needing the resistor on the distribution box,
T
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tonya renee
Novice
Mar 5, 2009, 12:33 PM
Post #3 of 20
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Re: A/C blower only works on high
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When I bought the car the fan did not work at all. I checked the fuse box inside the car and found the resistor was missing. I bought a new one and that made the fan work on high. The switch has always responded by making the A/C light come on and activating the condenser. I haven't seen any signs of wires getting hot but I do need to look closer. I did notice there was another resistor on the back of the fuse box where the wires from the A/C switch connect but I don't know what it is for. The guy at Saturn told me that the A/c resistor was the same one the use for the fuel pump, I don't know if thats right but thats what he said. Thanks for your quick response so far.
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Double J
Veteran
/ Moderator
Mar 5, 2009, 12:54 PM
Post #4 of 20
(4742 views)
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Re: A/C blower only works on high
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Thought i'd jump here too..
Sounds like you replaced a missing fuse not the blower motor resistor
Resistor looks like this
 
Here is a generic pic of what fuses look like
(This post was edited by JIM N on Mar 5, 2009, 1:00 PM)
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 5, 2009, 12:58 PM
Post #5 of 20
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Re: A/C blower only works on high
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I think we have apples and hand grenades mixed up here I think you are referring to a relay that fits both A/C and fuel pump but there should be two - just perhaps the same part #. A blower resistor is usually a project to get to on the heater/distribution box - generic diagram below......
That is usually placed near blower motor as shown in this sample. Some may require taking dash parts off to even see it or get anywhere near it. It's not in the fuse box.
The resistor common failure is defaulting to high speed fan only,
T
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 5, 2009, 1:00 PM
Post #6 of 20
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Re: A/C blower only works on high
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Hi Jim! We strike at the same nano second!
T
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Double J
Veteran
/ Moderator
Mar 5, 2009, 1:02 PM
Post #7 of 20
(4733 views)
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Re: A/C blower only works on high
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OOPS,
Sorry Tom,
Didnt know you were online..guess i shoulda checked first!
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Double J
Veteran
/ Moderator
Mar 5, 2009, 1:05 PM
Post #8 of 20
(4732 views)
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Re: A/C blower only works on high
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To quote OUR famous ' Loren '
"Great minds think....."
Aw forget it...I told you before,out of all the things i lost ,its my mind i miss the most!
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tonya renee
Novice
Mar 5, 2009, 1:10 PM
Post #9 of 20
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Re: A/C blower only works on high
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Wow you guys are on it! This is awesome the pictures are great. I don't think I would have completely got without both reply's. Thank you I will let you know what I find.
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tonya renee
Novice
Mar 5, 2009, 1:23 PM
Post #10 of 20
(4727 views)
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Re: A/C blower only works on high
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The fuse I replaced looked  like a little cube
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 5, 2009, 1:28 PM
Post #11 of 20
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Re: A/C blower only works on high
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You mean like.....
 or
Or
Doesn't matter - not the part for this exact problem now,
T
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tonya renee
Novice
Mar 25, 2009, 7:05 PM
Post #12 of 20
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Re: A/C blower only works on high
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Okay Im frustrated, I bought the resistor 52454736. But I cant find where it goes. I took the glove box out, took the front dash plate off, took out the stereo, took out the a/c control panel, took out the instrment panel, all I found was dust. Everything looks like one peice and I read that they would put it where it could stay cool but I cant figure out how to get to the back of the vents. I also looked in the outside vent under the wipers with a flashlight cant see anything????????
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 25, 2009, 8:51 PM
Post #13 of 20
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Re: A/C blower only works on high
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Resistor is usually located right near where wires to blower motor are to the blower itself,
T
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tonya renee
Novice
Mar 25, 2009, 10:22 PM
Post #14 of 20
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Re: A/C blower only works on high
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I just found this link with a good photo of a 97 mine is a 01. http://www.saturnfans.com/...hoto.php?photo=43076 This looks like a nightmare  why are American cars this way. I had a 1964 Tbird that was just like this except it was metal. How you gonna get a screw driver in there? I'm gonna break a nail for sure .
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 26, 2009, 3:05 AM
Post #15 of 20
(4643 views)
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Re: A/C blower only works on high
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Yes - that's the item. You might be surprised that's not as bad as it looks. Top of dash pad would come out and it's right there - knowing how to do that EXACTLY will be a trick. Screws on the front and slide clips towards the glass most likely.
Funny about the 64 T-Bird. Ya - they were all metal but those were tight working in lots of areas for the day as well,
T
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tonya renee
Novice
Mar 26, 2009, 3:17 PM
Post #16 of 20
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Re: A/C blower only works on high
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Okay so that wasnt so bad. The dash only has 2 screws and pops right off and its under the defrost vent. I replaced the resistor However...no change. So I guess I will replace the switch next. If you atempt this time consuming task make sure you have a 5.5mm socket.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 26, 2009, 7:11 PM
Post #17 of 20
(4628 views)
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Re: A/C blower only works on high
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Don't you just love those sneaky devils? BTW - 5.5mm also equals I think it's 7/32nds from the very old English measures,
T
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tonya renee
Novice
Apr 5, 2009, 11:25 AM
Post #18 of 20
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Re: A/C blower only works on high
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Well son of a beotch! I fixed my A/C I was cleaning my car and guess what I found under the passenger seat. 3 resistors? For Sh!ts and giggles I took out the new resistor I had bought from autozone (acdelco) and put in one of the ones I had found. The A/C now works like new? I guess I went through a lot of trouble for nothing. But if they had the working parts under the seat why didn't they fix it, why was there 3 and why did they mess with it in the first place? I guess I will have to stand in line after the great pyramids and ufo's before I find out why.
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Frevans7155
New User
Aug 19, 2015, 6:17 PM
Post #19 of 20
(2144 views)
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Re: A/C blower only works on high
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I have a similar problem. We just bought a 2003 Impala for our grandsons first car. The fan for the ac only has 2 speeds, high and off (hopefully not the way he'll drive it). I'm not sure where to start, do I try switching a couple relay's, assuming there are 2 of the same relay's in the box. Or do I pull the switch to check all the wires and continuity through the switch? I haven't had a car that I needed to work on in years (other than routine maintenance).
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Hammer Time
Ultimate Carjunky
/ Moderator
Aug 19, 2015, 6:48 PM
Post #20 of 20
(2143 views)
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Re: A/C blower only works on high
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This thread is 6 years old.
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