12v heaters
10-09-2003, 05:46 PM
#14
Guest
Posts: n/a
Re: 12v heaters
You can tag the heater motor power wire under the battery and feed it 12
volts from the battery to see if it spins up.
If yes, the switch is bad.
If not, then you use a booster cable from the battery negative to the
heater motor case under the battery to make sure it has a ground and tag
the power wire with 12 volts.
If it fires, the ground is bad.
If not, the motor is toast.
You can do like I did and put a blower motor from a full sized 73 Blazer
350 engine with AC in it. The fan fits right on, you just have to make
the opening in the firewall larger for the larger motor.
On low, it puts out more that the CJ blower did on high.
Just a warning, in the US, the parts stores have two versions of this
blower motor, one has a shaft that is 1/2" too long. Their parts
computer is messed up. The call one the 'heavy duty' or 'premium' or
something. If they have 2, compare them and grab the one with the
shorter output shaft.
http://www.off-road.com/jeep/tech/body/heater.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Joshua Nelson wrote:
>
> > What model of Jeep? Sometimes it's an easy fix.
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
volts from the battery to see if it spins up.
If yes, the switch is bad.
If not, then you use a booster cable from the battery negative to the
heater motor case under the battery to make sure it has a ground and tag
the power wire with 12 volts.
If it fires, the ground is bad.
If not, the motor is toast.
You can do like I did and put a blower motor from a full sized 73 Blazer
350 engine with AC in it. The fan fits right on, you just have to make
the opening in the firewall larger for the larger motor.
On low, it puts out more that the CJ blower did on high.
Just a warning, in the US, the parts stores have two versions of this
blower motor, one has a shaft that is 1/2" too long. Their parts
computer is messed up. The call one the 'heavy duty' or 'premium' or
something. If they have 2, compare them and grab the one with the
shorter output shaft.
http://www.off-road.com/jeep/tech/body/heater.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Joshua Nelson wrote:
>
> > What model of Jeep? Sometimes it's an easy fix.
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
10-09-2003, 05:46 PM
#15
Guest
Posts: n/a
Re: 12v heaters
You can tag the heater motor power wire under the battery and feed it 12
volts from the battery to see if it spins up.
If yes, the switch is bad.
If not, then you use a booster cable from the battery negative to the
heater motor case under the battery to make sure it has a ground and tag
the power wire with 12 volts.
If it fires, the ground is bad.
If not, the motor is toast.
You can do like I did and put a blower motor from a full sized 73 Blazer
350 engine with AC in it. The fan fits right on, you just have to make
the opening in the firewall larger for the larger motor.
On low, it puts out more that the CJ blower did on high.
Just a warning, in the US, the parts stores have two versions of this
blower motor, one has a shaft that is 1/2" too long. Their parts
computer is messed up. The call one the 'heavy duty' or 'premium' or
something. If they have 2, compare them and grab the one with the
shorter output shaft.
http://www.off-road.com/jeep/tech/body/heater.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Joshua Nelson wrote:
>
> > What model of Jeep? Sometimes it's an easy fix.
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
volts from the battery to see if it spins up.
If yes, the switch is bad.
If not, then you use a booster cable from the battery negative to the
heater motor case under the battery to make sure it has a ground and tag
the power wire with 12 volts.
If it fires, the ground is bad.
If not, the motor is toast.
You can do like I did and put a blower motor from a full sized 73 Blazer
350 engine with AC in it. The fan fits right on, you just have to make
the opening in the firewall larger for the larger motor.
On low, it puts out more that the CJ blower did on high.
Just a warning, in the US, the parts stores have two versions of this
blower motor, one has a shaft that is 1/2" too long. Their parts
computer is messed up. The call one the 'heavy duty' or 'premium' or
something. If they have 2, compare them and grab the one with the
shorter output shaft.
http://www.off-road.com/jeep/tech/body/heater.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Joshua Nelson wrote:
>
> > What model of Jeep? Sometimes it's an easy fix.
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
10-09-2003, 05:46 PM
#16
Guest
Posts: n/a
Re: 12v heaters
You can tag the heater motor power wire under the battery and feed it 12
volts from the battery to see if it spins up.
If yes, the switch is bad.
If not, then you use a booster cable from the battery negative to the
heater motor case under the battery to make sure it has a ground and tag
the power wire with 12 volts.
If it fires, the ground is bad.
If not, the motor is toast.
You can do like I did and put a blower motor from a full sized 73 Blazer
350 engine with AC in it. The fan fits right on, you just have to make
the opening in the firewall larger for the larger motor.
On low, it puts out more that the CJ blower did on high.
Just a warning, in the US, the parts stores have two versions of this
blower motor, one has a shaft that is 1/2" too long. Their parts
computer is messed up. The call one the 'heavy duty' or 'premium' or
something. If they have 2, compare them and grab the one with the
shorter output shaft.
http://www.off-road.com/jeep/tech/body/heater.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Joshua Nelson wrote:
>
> > What model of Jeep? Sometimes it's an easy fix.
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
volts from the battery to see if it spins up.
If yes, the switch is bad.
If not, then you use a booster cable from the battery negative to the
heater motor case under the battery to make sure it has a ground and tag
the power wire with 12 volts.
If it fires, the ground is bad.
If not, the motor is toast.
You can do like I did and put a blower motor from a full sized 73 Blazer
350 engine with AC in it. The fan fits right on, you just have to make
the opening in the firewall larger for the larger motor.
On low, it puts out more that the CJ blower did on high.
Just a warning, in the US, the parts stores have two versions of this
blower motor, one has a shaft that is 1/2" too long. Their parts
computer is messed up. The call one the 'heavy duty' or 'premium' or
something. If they have 2, compare them and grab the one with the
shorter output shaft.
http://www.off-road.com/jeep/tech/body/heater.html
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Joshua Nelson wrote:
>
> > What model of Jeep? Sometimes it's an easy fix.
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
10-09-2003, 06:36 PM
#17
Guest
Posts: n/a
Re: 12v heaters
The vent is mechanical, so if they don't do anything, the linkage parts are
disconnected or missing. The fan is the only electrical part, and the motor
is a common failure item. The replacement motor that works really good is
from an S10 or S15 (Chevy or GMC).
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0310091327.40af234a@posting.google.c om...
> > What model of Jeep? Sometimes it's an easy fix.
>
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
disconnected or missing. The fan is the only electrical part, and the motor
is a common failure item. The replacement motor that works really good is
from an S10 or S15 (Chevy or GMC).
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0310091327.40af234a@posting.google.c om...
> > What model of Jeep? Sometimes it's an easy fix.
>
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
10-09-2003, 06:36 PM
#18
Guest
Posts: n/a
Re: 12v heaters
The vent is mechanical, so if they don't do anything, the linkage parts are
disconnected or missing. The fan is the only electrical part, and the motor
is a common failure item. The replacement motor that works really good is
from an S10 or S15 (Chevy or GMC).
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0310091327.40af234a@posting.google.c om...
> > What model of Jeep? Sometimes it's an easy fix.
>
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
disconnected or missing. The fan is the only electrical part, and the motor
is a common failure item. The replacement motor that works really good is
from an S10 or S15 (Chevy or GMC).
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0310091327.40af234a@posting.google.c om...
> > What model of Jeep? Sometimes it's an easy fix.
>
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
10-09-2003, 06:36 PM
#19
Guest
Posts: n/a
Re: 12v heaters
The vent is mechanical, so if they don't do anything, the linkage parts are
disconnected or missing. The fan is the only electrical part, and the motor
is a common failure item. The replacement motor that works really good is
from an S10 or S15 (Chevy or GMC).
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0310091327.40af234a@posting.google.c om...
> > What model of Jeep? Sometimes it's an easy fix.
>
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
disconnected or missing. The fan is the only electrical part, and the motor
is a common failure item. The replacement motor that works really good is
from an S10 or S15 (Chevy or GMC).
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0310091327.40af234a@posting.google.c om...
> > What model of Jeep? Sometimes it's an easy fix.
>
>
> 1982 CJ. None of the dash switches work except headlights and wipers.
> (No vent, no heater.)
10-09-2003, 09:35 PM
#20
Guest
Posts: n/a
Re: 12v heaters
Pelonis makes decent ones that just barely take the chill out of the air.
They cost much more than 20 bucks and still wont do the job you need in a
Jeep on a cold day. The cheap ones you refer to are absolutely useless.
KH
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0310091019.1d607d89@posting.google.c om...
> My heater fan assembly doesn't work. Rather than wade in and try to
> figure it out and fix it, I've seen those 12v ceramic heaters that
> plug into the cigarette lighter, for about $20. I was wondering if
> anyone has experience with these... do they work as advertised?
They cost much more than 20 bucks and still wont do the job you need in a
Jeep on a cold day. The cheap ones you refer to are absolutely useless.
KH
"Joshua Nelson" <spam_box@ev1.net> wrote in message
news:b102b6e4.0310091019.1d607d89@posting.google.c om...
> My heater fan assembly doesn't work. Rather than wade in and try to
> figure it out and fix it, I've seen those 12v ceramic heaters that
> plug into the cigarette lighter, for about $20. I was wondering if
> anyone has experience with these... do they work as advertised?
