Need help with blower motor
#1
Need help with blower motor
1998 Blazer 4x4 with ACC (Automatic Climate Control)
My blower motor wont start up at any speed I set it at. I replaced the blower motor, the resistor, and the control unit in the dash. Nothing. I did some searching on here and found a few posts talking about a couple sensors that the ACC uses (cabin temp sensor in headliner and air temp sensor behind grille). Could one of these be the problem? I would assume that they would only come into play when the temp and blower speed are set to AUTO, but I have no blower even at the manual settings. Also, the temp on my overhead console always reads OC. I found on here that it means open circuit, and usually means the air temp sensor behind the grille is bad but would this cause the blower not to work? Can anybody point me in a direction to look next? Any help is greatly appreciatted!!
My blower motor wont start up at any speed I set it at. I replaced the blower motor, the resistor, and the control unit in the dash. Nothing. I did some searching on here and found a few posts talking about a couple sensors that the ACC uses (cabin temp sensor in headliner and air temp sensor behind grille). Could one of these be the problem? I would assume that they would only come into play when the temp and blower speed are set to AUTO, but I have no blower even at the manual settings. Also, the temp on my overhead console always reads OC. I found on here that it means open circuit, and usually means the air temp sensor behind the grille is bad but would this cause the blower not to work? Can anybody point me in a direction to look next? Any help is greatly appreciatted!!
#3
Yes. All fuses are good. I'm stumped!
Could it be the blower motor relay? If so, where is that located?
Could it be the blower motor relay? If so, where is that located?
Last edited by swartlkk; 11-08-2009 at 04:44 PM. Reason: Combining Consecutive Posts. Please use the EDIT feature to add additional information to your post. Consecutive Posting is prohibitted.
#5
I still dont see a relay. Also, my resistor looks alot different than everyone elses. Im assuming its because I have ACC? Anyways, I have 3 wires going to my resistor, orange, black, and purlpe with white stripe. I have no power to the orange, no ground on the black, but I am getting signal from the in cab fan speed control at the purple. Is the orange a switched power? Could I run a relay to get hot to it when the ignition is on? Would that work if I also grounded the black?
Thread
Thread Starter
Forum
Replies
Last Post
maxvamp
Lighting & Electrical
3
10-31-2020 08:19 AM
fitztool
2nd Generation S-series (1995-2005) Tech
4
12-09-2010 06:50 AM
jwalker89
2nd Generation S-series (1995-2005) Tech
3
07-10-2010 02:26 AM