My 94 4.0L Jeep Cherokee has developed a blower motor problem.

This started out as intermittency. I'd start the jeep, and turn on
the AC, but the blower would not come on. I would feel cold air at the
vents. After driving for a while, the blower would come on and run
just fine. My wife advised me that hitting the dash would also
occasionally turn it on.

This week, the blower has refused to come on at all, either for vent,
AC or Heat. I can still hear the AC kicking up.

I replaced the blower motor speed switch, but still no airflow. I
followed the wiring down to the blower resistor block, and I see strong
voltage at the twin green wires. I've checked all the fuses in the
interior and engine compartment, all ok.

Is there a relay on this year model for the blower that I've failed
to find? If so, where would I look? The intermittent behavior makes
me suspect a relay, but my Haynes manual is pretty useless on this
point.

If there is no relay, how would I access the blower motor to check it
out? Looking under the passenger footwell, I can see the squirrel
cage, but I've no idea how I'd get to the motor.

Thanks very much.

S

 

The relay switch in the Power Distribution Center, the box by your
battery, it only works in the high speed switch position:
http://www.----------.com/blower.pdf
God Bless America, Bill O|||||||O
mailto:--------------------

fraserwag@yahoo.com wrote:
>
> My 94 4.0L Jeep Cherokee has developed a blower motor problem.
>
> This started out as intermittency. I'd start the jeep, and turn on
> the AC, but the blower would not come on. I would feel cold air at the
> vents. After driving for a while, the blower would come on and run
> just fine. My wife advised me that hitting the dash would also
> occasionally turn it on.
>
> This week, the blower has refused to come on at all, either for vent,
> AC or Heat. I can still hear the AC kicking up.
>
> I replaced the blower motor speed switch, but still no airflow. I
> followed the wiring down to the blower resistor block, and I see strong
> voltage at the twin green wires. I've checked all the fuses in the
> interior and engine compartment, all ok.
>
> Is there a relay on this year model for the blower that I've failed
> to find? If so, where would I look? The intermittent behavior makes
> me suspect a relay, but my Haynes manual is pretty useless on this
> point.
>
> If there is no relay, how would I access the blower motor to check it
> out? Looking under the passenger footwell, I can see the squirrel
> cage, but I've no idea how I'd get to the motor.
>
> Thanks very much.
>
> S

 

The relay switch in the Power Distribution Center, the box by your
battery, it only works in the high speed switch position:
http://www.----------.com/blower.pdf
God Bless America, Bill O|||||||O
mailto:--------------------

fraserwag@yahoo.com wrote:
>
> My 94 4.0L Jeep Cherokee has developed a blower motor problem.
>
> This started out as intermittency. I'd start the jeep, and turn on
> the AC, but the blower would not come on. I would feel cold air at the
> vents. After driving for a while, the blower would come on and run
> just fine. My wife advised me that hitting the dash would also
> occasionally turn it on.
>
> This week, the blower has refused to come on at all, either for vent,
> AC or Heat. I can still hear the AC kicking up.
>
> I replaced the blower motor speed switch, but still no airflow. I
> followed the wiring down to the blower resistor block, and I see strong
> voltage at the twin green wires. I've checked all the fuses in the
> interior and engine compartment, all ok.
>
> Is there a relay on this year model for the blower that I've failed
> to find? If so, where would I look? The intermittent behavior makes
> me suspect a relay, but my Haynes manual is pretty useless on this
> point.
>
> If there is no relay, how would I access the blower motor to check it
> out? Looking under the passenger footwell, I can see the squirrel
> cage, but I've no idea how I'd get to the motor.
>
> Thanks very much.
>
> S

 

The relay switch in the Power Distribution Center, the box by your
battery, it only works in the high speed switch position:
http://www.----------.com/blower.pdf
God Bless America, Bill O|||||||O
mailto:--------------------

fraserwag@yahoo.com wrote:
>
> My 94 4.0L Jeep Cherokee has developed a blower motor problem.
>
> This started out as intermittency. I'd start the jeep, and turn on
> the AC, but the blower would not come on. I would feel cold air at the
> vents. After driving for a while, the blower would come on and run
> just fine. My wife advised me that hitting the dash would also
> occasionally turn it on.
>
> This week, the blower has refused to come on at all, either for vent,
> AC or Heat. I can still hear the AC kicking up.
>
> I replaced the blower motor speed switch, but still no airflow. I
> followed the wiring down to the blower resistor block, and I see strong
> voltage at the twin green wires. I've checked all the fuses in the
> interior and engine compartment, all ok.
>
> Is there a relay on this year model for the blower that I've failed
> to find? If so, where would I look? The intermittent behavior makes
> me suspect a relay, but my Haynes manual is pretty useless on this
> point.
>
> If there is no relay, how would I access the blower motor to check it
> out? Looking under the passenger footwell, I can see the squirrel
> cage, but I've no idea how I'd get to the motor.
>
> Thanks very much.
>
> S

 

I fixed my '93 Grand Cherokee by just cleaning out the cage. It would work
on high but not low or second. It didn't have a lot of debris in it, just a
couple small leaves, but it made a world of difference just pulling it down
and cleaning it out.
My 2 cents.
D
Oh, my wife is a dashboard slugger too. Same thing, she'd fix it by
slugging. (fixes me too sometimes)


<fraserwag@yahoo.com> wrote in message
news:1157245906.213706.30540@i3g2000cwc.googlegrou ps.com...
> My 94 4.0L Jeep Cherokee has developed a blower motor problem.
>
> This started out as intermittency. I'd start the jeep, and turn on
> the AC, but the blower would not come on. I would feel cold air at the
> vents. After driving for a while, the blower would come on and run
> just fine. My wife advised me that hitting the dash would also
> occasionally turn it on.
>
> This week, the blower has refused to come on at all, either for vent,
> AC or Heat. I can still hear the AC kicking up.
>
> I replaced the blower motor speed switch, but still no airflow. I
> followed the wiring down to the blower resistor block, and I see strong
> voltage at the twin green wires. I've checked all the fuses in the
> interior and engine compartment, all ok.
>
> Is there a relay on this year model for the blower that I've failed
> to find? If so, where would I look? The intermittent behavior makes
> me suspect a relay, but my Haynes manual is pretty useless on this
> point.
>
> If there is no relay, how would I access the blower motor to check it
> out? Looking under the passenger footwell, I can see the squirrel
> cage, but I've no idea how I'd get to the motor.
>
> Thanks very much.
>
> S
>

 

I fixed my '93 Grand Cherokee by just cleaning out the cage. It would work
on high but not low or second. It didn't have a lot of debris in it, just a
couple small leaves, but it made a world of difference just pulling it down
and cleaning it out.
My 2 cents.
D
Oh, my wife is a dashboard slugger too. Same thing, she'd fix it by
slugging. (fixes me too sometimes)


<fraserwag@yahoo.com> wrote in message
news:1157245906.213706.30540@i3g2000cwc.googlegrou ps.com...
> My 94 4.0L Jeep Cherokee has developed a blower motor problem.
>
> This started out as intermittency. I'd start the jeep, and turn on
> the AC, but the blower would not come on. I would feel cold air at the
> vents. After driving for a while, the blower would come on and run
> just fine. My wife advised me that hitting the dash would also
> occasionally turn it on.
>
> This week, the blower has refused to come on at all, either for vent,
> AC or Heat. I can still hear the AC kicking up.
>
> I replaced the blower motor speed switch, but still no airflow. I
> followed the wiring down to the blower resistor block, and I see strong
> voltage at the twin green wires. I've checked all the fuses in the
> interior and engine compartment, all ok.
>
> Is there a relay on this year model for the blower that I've failed
> to find? If so, where would I look? The intermittent behavior makes
> me suspect a relay, but my Haynes manual is pretty useless on this
> point.
>
> If there is no relay, how would I access the blower motor to check it
> out? Looking under the passenger footwell, I can see the squirrel
> cage, but I've no idea how I'd get to the motor.
>
> Thanks very much.
>
> S
>

 

I fixed my '93 Grand Cherokee by just cleaning out the cage. It would work
on high but not low or second. It didn't have a lot of debris in it, just a
couple small leaves, but it made a world of difference just pulling it down
and cleaning it out.
My 2 cents.
D
Oh, my wife is a dashboard slugger too. Same thing, she'd fix it by
slugging. (fixes me too sometimes)


<fraserwag@yahoo.com> wrote in message
news:1157245906.213706.30540@i3g2000cwc.googlegrou ps.com...
> My 94 4.0L Jeep Cherokee has developed a blower motor problem.
>
> This started out as intermittency. I'd start the jeep, and turn on
> the AC, but the blower would not come on. I would feel cold air at the
> vents. After driving for a while, the blower would come on and run
> just fine. My wife advised me that hitting the dash would also
> occasionally turn it on.
>
> This week, the blower has refused to come on at all, either for vent,
> AC or Heat. I can still hear the AC kicking up.
>
> I replaced the blower motor speed switch, but still no airflow. I
> followed the wiring down to the blower resistor block, and I see strong
> voltage at the twin green wires. I've checked all the fuses in the
> interior and engine compartment, all ok.
>
> Is there a relay on this year model for the blower that I've failed
> to find? If so, where would I look? The intermittent behavior makes
> me suspect a relay, but my Haynes manual is pretty useless on this
> point.
>
> If there is no relay, how would I access the blower motor to check it
> out? Looking under the passenger footwell, I can see the squirrel
> cage, but I've no idea how I'd get to the motor.
>
> Thanks very much.
>
> S
>

 

L.W.(Bill) ------ III wrote:
> The relay switch in the Power Distribution Center, the box by your
> battery, it only works in the high speed switch position:
> http://www.----------.com/blower.pdf
> God Bless America, Bill O|||||||O
> mailto:--------------------
>
> fraserwag@yahoo.com wrote:
> >
> > My 94 4.0L Jeep Cherokee has developed a blower motor problem.
> >
> > This started out as intermittency. I'd start the jeep, and turn on
> > the AC, but the blower would not come on. I would feel cold air at the
> > vents. After driving for a while, the blower would come on and run
> > just fine. My wife advised me that hitting the dash would also
> > occasionally turn it on.
> >
> > This week, the blower has refused to come on at all, either for vent,
> > AC or Heat. I can still hear the AC kicking up.
> >
> > I replaced the blower motor speed switch, but still no airflow. I
> > followed the wiring down to the blower resistor block, and I see strong
> > voltage at the twin green wires. I've checked all the fuses in the
> > interior and engine compartment, all ok.
> >
> > Is there a relay on this year model for the blower that I've failed
> > to find? If so, where would I look? The intermittent behavior makes
> > me suspect a relay, but my Haynes manual is pretty useless on this
> > point.
> >
> > If there is no relay, how would I access the blower motor to check it
> > out? Looking under the passenger footwell, I can see the squirrel
> > cage, but I've no idea how I'd get to the motor.
> >
> > Thanks very much.
> >
> > S

Thanks, Bill. I took a look there yesterday. Turning the lid over, I
see there is labels indicating the role of the various relays and
fuses, but none mention the blower motor. There is a fuse and relay
for the aux. fan, but it comes on when I turn the selector to AC, so
I'm good there. All the fuses check out ok. I've tapped all the
relays, and they test ok.

I'll keep looking. Thanks again.

 

L.W.(Bill) ------ III wrote:
> The relay switch in the Power Distribution Center, the box by your
> battery, it only works in the high speed switch position:
> http://www.----------.com/blower.pdf
> God Bless America, Bill O|||||||O
> mailto:--------------------
>
> fraserwag@yahoo.com wrote:
> >
> > My 94 4.0L Jeep Cherokee has developed a blower motor problem.
> >
> > This started out as intermittency. I'd start the jeep, and turn on
> > the AC, but the blower would not come on. I would feel cold air at the
> > vents. After driving for a while, the blower would come on and run
> > just fine. My wife advised me that hitting the dash would also
> > occasionally turn it on.
> >
> > This week, the blower has refused to come on at all, either for vent,
> > AC or Heat. I can still hear the AC kicking up.
> >
> > I replaced the blower motor speed switch, but still no airflow. I
> > followed the wiring down to the blower resistor block, and I see strong
> > voltage at the twin green wires. I've checked all the fuses in the
> > interior and engine compartment, all ok.
> >
> > Is there a relay on this year model for the blower that I've failed
> > to find? If so, where would I look? The intermittent behavior makes
> > me suspect a relay, but my Haynes manual is pretty useless on this
> > point.
> >
> > If there is no relay, how would I access the blower motor to check it
> > out? Looking under the passenger footwell, I can see the squirrel
> > cage, but I've no idea how I'd get to the motor.
> >
> > Thanks very much.
> >
> > S

Thanks, Bill. I took a look there yesterday. Turning the lid over, I
see there is labels indicating the role of the various relays and
fuses, but none mention the blower motor. There is a fuse and relay
for the aux. fan, but it comes on when I turn the selector to AC, so
I'm good there. All the fuses check out ok. I've tapped all the
relays, and they test ok.

I'll keep looking. Thanks again.

 

L.W.(Bill) ------ III wrote:
> The relay switch in the Power Distribution Center, the box by your
> battery, it only works in the high speed switch position:
> http://www.----------.com/blower.pdf
> God Bless America, Bill O|||||||O
> mailto:--------------------
>
> fraserwag@yahoo.com wrote:
> >
> > My 94 4.0L Jeep Cherokee has developed a blower motor problem.
> >
> > This started out as intermittency. I'd start the jeep, and turn on
> > the AC, but the blower would not come on. I would feel cold air at the
> > vents. After driving for a while, the blower would come on and run
> > just fine. My wife advised me that hitting the dash would also
> > occasionally turn it on.
> >
> > This week, the blower has refused to come on at all, either for vent,
> > AC or Heat. I can still hear the AC kicking up.
> >
> > I replaced the blower motor speed switch, but still no airflow. I
> > followed the wiring down to the blower resistor block, and I see strong
> > voltage at the twin green wires. I've checked all the fuses in the
> > interior and engine compartment, all ok.
> >
> > Is there a relay on this year model for the blower that I've failed
> > to find? If so, where would I look? The intermittent behavior makes
> > me suspect a relay, but my Haynes manual is pretty useless on this
> > point.
> >
> > If there is no relay, how would I access the blower motor to check it
> > out? Looking under the passenger footwell, I can see the squirrel
> > cage, but I've no idea how I'd get to the motor.
> >
> > Thanks very much.
> >
> > S

Thanks, Bill. I took a look there yesterday. Turning the lid over, I
see there is labels indicating the role of the various relays and
fuses, but none mention the blower motor. There is a fuse and relay
for the aux. fan, but it comes on when I turn the selector to AC, so
I'm good there. All the fuses check out ok. I've tapped all the
relays, and they test ok.

I'll keep looking. Thanks again.