|
|
96 ford ranger heater motor has no power
|
|
|
| |
|
|
mr+brakes
User
Dec 1, 2012, 6:30 AM
Post #1 of 26
(8048 views)
|
|
96 ford ranger heater motor has no power
|
Sign In
|
|
I have a 96 ford ranger that the heater is only getting partial electric to it. I'm looking to acquire a solution to have my heater and ac work. I have no power to the blower motor and lost some power to the switches. I have replaced the resistor and blower switch ( the switch behind passenger headlight. Does anyone have clues what is going on, I have good fuses and even tested the blower motor, but I'm not getting power to the blower motor.
|
|
| |
|
|
Discretesignals
Ultimate Carjunky
/ Moderator
Dec 1, 2012, 8:47 AM
Post #2 of 26
(8019 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
Are you using a test light or volt meter? You don't have 12 volts at the blower motor's connector on the pink/white wire with the blower being turned on at the control panel and ignition turned on?
The schematic below is a little different than your vehicle. It's for a 95, but they have the same color and routing as the 96's blower. The fuses are in different locations and at the bottom there is one wire color that is different on the WOT relay, but your not concerned in that area. If you need the fuse locations, let us know.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Dec 1, 2012, 9:00 AM)
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Dec 1, 2012, 12:13 PM
Post #3 of 26
(7995 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
I don't know if you know how to read that wiring diagram but the switch supplies ground, not power in that circuit.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
mr+brakes
User
Dec 1, 2012, 7:40 PM
Post #4 of 26
(7985 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
I have a test light and volt meter. I have no power at the pink wire at blower motor. The control panel that makes everything function test out as working with the key on in the run position but have no power at blower motor.
The switch that controls the vacuum I can hear it energize when changing positions. The fan speed test as working at the connection for the resistor. All fuses test out as good, (So Far)
Although I may have found that my fuse box is not getting power at all the fuses. I have to check the box at the back side to make sure wires are going to fuse connections that have no power.
The fuse that is for Blower is good and is getting power, in both the power distribution box and in the fuse box in side the cab.
I have tested grounds and found no issues, just no power at blower motor it self.
I do appreciate all the help possible because I did have to blower working at on time. I bought this truck as a totaled wreck and just have the heater/ac to complete repairs to have a rust free truck.
|
|
| |
|
|
Discretesignals
Ultimate Carjunky
/ Moderator
Dec 1, 2012, 7:50 PM
Post #5 of 26
(7982 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
Locate the blower relay. It is located in fuse box #2 near the right headlamp. Have someone turn the blower on and off (mode switch on and off). Does the relay click on and off?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Dec 1, 2012, 7:53 PM)
|
|
| |
|
|
mr+brakes
User
Dec 1, 2012, 8:11 PM
Post #6 of 26
(7972 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
I realize the resistor is based upon ground, however the blower motor should have a power source in order for it to work. I just can't see a blower motor working based upon all grounds with no power source. The pink wire at the blower motor should have power and the orange wire be a ground. Unless I'm 41 years behind the times.
Yes my resistor wiring does test out as functioning correct based upon grounds changing positions with the blower switch being turned.
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Dec 1, 2012, 8:24 PM
Post #7 of 26
(7965 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
That's the reason that he just told you to check the relay or did you miss that.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
Sidom
Veteran
/ Moderator
Dec 1, 2012, 9:18 PM
Post #8 of 26
(7959 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
Personally, whenever I'm at a new forum I refrain from using comedy in my posts until the people there know me because it can so easily be misinterpreted as sarcasm.
Start at the relay as DS & HT are suggesting....... 2 sockets shoud have power & 2 should have a ground. Find out what socket #87 of the relay goes into & jump 12v to there, the motor should come on.
Even easier, swap a relay with another one in the box.....
|
|
| |
|
|
mr+brakes
User
Dec 2, 2012, 12:09 PM
Post #9 of 26
(7939 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
The blower motor relay does turn off and on with the switch with key on run. I also remover blower relay and jumped across 87 to blower and it turned on.
I also checked fan speed while I had the fan motor jumped off and found no issues changing fan speed. The fan speed does change once the blower motor is jumped.
One thing that I did notice while jumping the fan motor is that I have no control of vent position is to be directed.
My next question is where is the IP boxes located in this ranger. Could issues be in the IP fuse boxes?
(This post was edited by mr+brakes on Dec 2, 2012, 12:33 PM)
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Dec 2, 2012, 12:17 PM
Post #10 of 26
(7933 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
It sounds like you have a bad relay.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
Tom Greenleaf
Ultimate Carjunky
/ Moderator
Dec 2, 2012, 12:24 PM
Post #11 of 26
(7928 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
Just swap that relay with the A/C relay (one that enables compressor) - near sure exact same part #. Those had a run of lousy ones fright around that model year. Actually the dealer relay new is/was less than aftermarket - dirt cheap,
T
|
|
| |
|
|
Discretesignals
Ultimate Carjunky
/ Moderator
Dec 2, 2012, 12:26 PM
Post #12 of 26
(7924 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
Yep, relay clicks telling you the coil side has a complete circuit. The blower operates with the relay bypassed, so relay contacts are bad.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
|
|
| |
|
|
Tom Greenleaf
Ultimate Carjunky
/ Moderator
Dec 2, 2012, 12:32 PM
Post #13 of 26
(7917 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
Luv it. Bust one open and look at actual points inside. They can touch, click and nothing gets thru. Jeez - for a while folks would plain call me stuck and would say swap A/C for fuel pump (same again) and off they went. That or whack them and sometimes they'll behave. Should be marked as which is to which item,
T
|
|
| |
|
|
mr+brakes
User
Dec 2, 2012, 12:44 PM
Post #14 of 26
(7909 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
I just bought this relay. It is the one that turns off and on with the switch. The original relay does the same thing. I even swapped relays with other in the truck that have the same diagram on them and I still have no blower.
(This post was edited by mr+brakes on Dec 2, 2012, 12:55 PM)
|
|
| |
|
|
Tom Greenleaf
Ultimate Carjunky
/ Moderator
Dec 2, 2012, 1:09 PM
Post #15 of 26
(7904 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
How about where relay is plugged in. Is that in good shape? Was just a run on the dang things now about over. Sometimes two at the same time like something was possessed and no clue why?
Any grounds in the area that may be just weak but make a test light light?
T
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Dec 2, 2012, 1:27 PM
Post #16 of 26
(7895 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
The relay may be energizing but it isn't delivering sufficient power so either it isn't receiving sufficient power or it isn't carrying it through.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
Sidom
Veteran
/ Moderator
Dec 2, 2012, 2:28 PM
Post #17 of 26
(7889 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
This is a pretty easy circuit to diag.....
Look at it as an intersection with 4 roads and u just need to find out which road is the problem child.
All 4 pin relays pretty much work the same way. #30 is load power, #87 is the load and this is the load side of the relay. #85 is control power, #86 is control ground and this is the control side of the relay (some will be #85 ground & #86 power but one is always power & the other ground).
Grab a 12v test light & hook the clip to the batt - terminal, turn the key on & 2 sockets need to have power on them. Then hook the clip to the batt + terminal (touch any metal surface & make sure the light turns on) and then probe the other relay sockets & both of those need to light up the light show there is a good ground on both of them.
If you have power on 2 sockets & ground on the other 2, then the whole circuit is complete & you have a bad relay or socket in the box. If one of the 2 sockets is missing power or ground then you found the bad circuit (road) and you need to trace that wire down.
Some relays the comp will ground #86 to energize the relay so this will show as an open circuit until you hook up a scan tool & command that circuit on. By the diagram DS posted there is no module energizing this circuit so you should be able to easily diag this with a test light & volt meter.....
|
|
| |
|
|
Discretesignals
Ultimate Carjunky
/ Moderator
Dec 2, 2012, 2:41 PM
Post #18 of 26
(7884 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
That doesn't make sense, because the relay is energizing if you can feel it click on and off by turning the mode switch on and off. That eliminates the entire control side of the circuit. You proved the load side circuit is operational because you stated you jumpered 87 to 30 and the blower came on. Using the Sherlock Holmes method the only thing left is the relay or its connection.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Dec 2, 2012, 2:44 PM)
|
|
| |
|
|
Sidom
Veteran
/ Moderator
Dec 2, 2012, 2:58 PM
Post #19 of 26
(7879 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
I agree it doesn't make sense.....you would think it would have a bad relay......The only other thing that would make sense is one of the terminals in the box is so loose that when the relay is put back it isn't making a good contact....
I sure hope when he finds the problems he comes back & tells us what he found...
(This post was edited by Sidom on Dec 2, 2012, 2:58 PM)
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Dec 2, 2012, 3:05 PM
Post #20 of 26
(7871 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
I think he should jump 30 to 87 and see if the fan works them. This could be a faulty fuse box with too much resistance.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
Sidom
Veteran
/ Moderator
Dec 2, 2012, 3:22 PM
Post #21 of 26
(7860 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
Thats a good idea, I'm not sure what power source he used to jump #87. I also noticed he said he had no fan contol when he jumped 87 & he should have. I noticed the control side ground splices into the control panel ground so there may be something going on there.
The diagram is for a 95, might not be a bad idea to pull up a 96 diagram & take a look
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Dec 2, 2012, 3:30 PM
Post #22 of 26
(7853 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
mr+brakes
User
Dec 2, 2012, 3:42 PM
Post #23 of 26
(7848 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
Due to all of your support, I found an issue in the wiring harness at the blower relay. The black and green wire was burned off at the terminal. I just will need to replace the terminal and with any luck I'll have a blower again.
I had to take the wiring harness block apart at the blower motor relay to find the problem. I"ll let you all know what happens once this repair is completed. I just hope that I can find a replacement terminal to go back into the box.
Thank you.
(This post was edited by mr+brakes on Dec 2, 2012, 3:47 PM)
|
|
| |
|
|
Sidom
Veteran
/ Moderator
Dec 2, 2012, 3:52 PM
Post #24 of 26
(7842 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
Glad you found the problem.
If the burnt wire was on the load side its entirely possible you have a blower motor going bad. When wires burn or connectors melt, its usually due to a load drawing too many amps & overheating the circuit.....
|
|
| |
|
|
mr+brakes
User
Dec 10, 2012, 10:07 PM
Post #25 of 26
(7787 views)
|
|
Re: 96 ford ranger heater motor has no power
|
Sign In
|
|
I was able to buy parts from ford to repair the wiring harness and it cost $2.00 to repair the burn corroded wire in the junction block at the blower relay.
|
|
| |
|
Auto Repair Home
SEARCH
WHO'S 
LOG 
2006 Toyoto Camry XLE Driver Side Electric Window Trouble
Tierod end change caused some kind of leak
Grounding Cable, 2017 Jeep Renegade Trailhawk
equipment
Howdy
1
