89 Cherokee blower
#1
Newbie
Thread Starter
Join Date: Oct 2015
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
89 Cherokee blower
So I've had issues with my blower not working and I finally had a little time to inspect it. When tearing down the dash and getting to the heater control I noticed that my harness to the switch is melted.
Good ol me went to pick n pull and tried to procure an unmelted one. Going through 3 Cherokees I noticed all 3 harnesses were melted.
Now I'm no rocket surgeon but it seems like this may be a common issue.
I'm curious to see what are some good steps on this repair. Should I get a new harness/pigtail connector w switch(I'm curious if it's still available through jeep). Have any of you hard wired with a switch and bypassed the blower switch? Any ideas/help would be rad.
Good ol me went to pick n pull and tried to procure an unmelted one. Going through 3 Cherokees I noticed all 3 harnesses were melted.
Now I'm no rocket surgeon but it seems like this may be a common issue.
I'm curious to see what are some good steps on this repair. Should I get a new harness/pigtail connector w switch(I'm curious if it's still available through jeep). Have any of you hard wired with a switch and bypassed the blower switch? Any ideas/help would be rad.
#2
Senior Member
It was probably the same condition on all those Jeeps-blower motor failure or blower wheel obstruction. They just don't melt-there's an increase in current because of something happening at the other end. When I picked up my '87, it had the "only works on high" issue. So, changed blower motor resister (which was blown) and it worked for a few days and then the resistor was burned out again. When I took out the blower, the shaft was very rusty and the wheel did not turn smoothly. New blower motor and no problem since (all speeds working).
#3
Newbie
Thread Starter
Join Date: Oct 2015
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
It was probably the same condition on all those Jeeps-blower motor failure or blower wheel obstruction. They just don't melt-there's an increase in current because of something happening at the other end. When I picked up my '87, it had the "only works on high" issue. So, changed blower motor resister (which was blown) and it worked for a few days and then the resistor was burned out again. When I took out the blower, the shaft was very rusty and the wheel did not turn smoothly. New blower motor and no problem since (all speeds working).
Have you heard of cutting the harness and directly plugging the wires into the switch? Or if the harness plug is still available?
Oh and thanks for the reply!
#4
Senior Member
Join Date: Sep 2014
Location: U.P. MI
Posts: 560
Likes: 0
Received 17 Likes
on
16 Posts
Year: 1989
Model: Cherokee
Engine: 4.0L
Had the same issue. You can go ahead and crimp female terminals to the wires and plug them directly to the switch.
But yeah, check out what's going on at the motor. It's getting hot for a reason.
But yeah, check out what's going on at the motor. It's getting hot for a reason.
#5
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,875
Received 1,526 Likes
on
1,238 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Also, when you get a chance, refresh the ground on the driver's side inner fender.
A ton of stuff grounds there, including your blower motor.
I stumbled on to something last week. If you take the ground wire on the harness side of the blower MOTOR plug, cut it and put both cut ends into a ring terminal and fasten it on the passenger's side inner fender the blower motor efficency increases.
Of my Tips in the link below, how many have you completed?
A ton of stuff grounds there, including your blower motor.
I stumbled on to something last week. If you take the ground wire on the harness side of the blower MOTOR plug, cut it and put both cut ends into a ring terminal and fasten it on the passenger's side inner fender the blower motor efficency increases.
Of my Tips in the link below, how many have you completed?
#6
Newbie
Thread Starter
Join Date: Oct 2015
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
#7
Newbie
Thread Starter
Join Date: Oct 2015
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Also, when you get a chance, refresh the ground on the driver's side inner fender.
A ton of stuff grounds there, including your blower motor.
I stumbled on to something last week. If you take the ground wire on the harness side of the blower MOTOR plug, cut it and put both cut ends into a ring terminal and fasten it on the passenger's side inner fender the blower motor efficency increases.
Of my Tips in the link below, how many have you completed?
A ton of stuff grounds there, including your blower motor.
I stumbled on to something last week. If you take the ground wire on the harness side of the blower MOTOR plug, cut it and put both cut ends into a ring terminal and fasten it on the passenger's side inner fender the blower motor efficency increases.
Of my Tips in the link below, how many have you completed?
Thread
Thread Starter
Forum
Replies
Last Post
Gtrsrlly
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
0
10-27-2015 07:14 PM
02809bristol
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
10-25-2015 12:16 AM
tnsquirrelhunter
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
10-24-2015 08:55 PM
Niccolo Ramirez
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
6
10-23-2015 09:35 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)