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#1 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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heater doesn't turn on
Hi Guys I am in need of some help. my heater does not turn on when I switch all the controls either way. I WD-40 them (before trying to move the switches) and they move but nothing is turning on I dont hear the blower motor kicking on or anything. Also it does not have AC if that helps any. I haven't looked into it since I'm not driving it but I'm getting it ready to go licence it this weekend and start driving it. So I would like to get it fixed. If you can help that will be great.
Thanks |
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#2 |
Registered User
Join Date: Jan 2009
Location: Las Cruces New Mexico
Posts: 219
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Re: heater doesn't turn on
check the plug on the blower motor under the hood. turn it on high and you should have close to 12 v at the plug
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#3 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
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#4 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
are you talking about the heater resistor
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#5 |
Registered User
Join Date: Jan 2009
Location: Las Cruces New Mexico
Posts: 219
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Re: heater doesn't turn on
Posted via Mobile Device
Hopefully the pic attached. There should be a fuse for it Posted via Mobile Device the pic is sideways |
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#6 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
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#7 |
Registered User
Join Date: Jan 2009
Location: Las Cruces New Mexico
Posts: 219
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Re: heater doesn't turn on
yes sir! that was in the second pic that i couldn't get attached
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#8 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
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#9 |
Registered User
Join Date: Jan 2009
Location: Las Cruces New Mexico
Posts: 219
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Re: heater doesn't turn on
the plug shouldn't be bad...if there is juice then the motor is bad...no juice check the fuse and go from there but make sure the heater is turned on!
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#10 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
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#11 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
Okay Update went and pulled the plug from the motor and got power to the plug. I took a screw driver and hit the motor a few times to see if it would turn on it did but it wasn't blowing really hard but it was working. so I'm guessing the motor is bad. Also can I buy the motor at a parts store or do I half to order one online.
Thanks |
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#12 |
Registered User
Join Date: Jan 2009
Location: Las Cruces New Mexico
Posts: 219
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Re: heater doesn't turn on
The part store should be able to order for you
Posted via Mobile Device |
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#13 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
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#14 |
Registered User
Join Date: Jan 2009
Location: Las Cruces New Mexico
Posts: 219
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Re: heater doesn't turn on
Of course when you take It off. You may find a rats nest is blocking it. You never know
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#15 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
good to know I do know it has a ton of leaves and twigs from sitting for a few years outside maybe thats why it doesnt work so great I'll try that first to see if that fixes the problem
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#16 |
Registered User
Join Date: Oct 2011
Location: St Petersburg, Florida
Posts: 154
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Re: heater doesn't turn on
Besides the good 12 volt power supply these fans need a good ground to the casing since they are mounted to a plastic housing. Make sure that black wire has a good clean connection on both ends. You can test them by jumping a wire from - on the battery to the casing and then another to the positive of the battery to where the orange wire plugs in.
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#17 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
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#18 |
Scrapper 1
Join Date: Jan 2007
Location: Riverside Calif
Posts: 1,649
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Re: heater doesn't turn on
even tho the new fan motor will not come with the fan it not hard to take off I like the metal round fan cage over the plastic one.1 think i have noticed is the plain heater blower fan is slower then the AC heater fan.Like most people on a cold day or night we want are heat now.
But getting one that is for the AC instead of the heater only is way better.it blows very hard and sence you have 2 settings high and low I buy the AC blower motor over just the heater blower motor.In my 1972 3/4 ton truck Guy at the parts counter made a mistake and gave me 3 AC blower motors i needed 2 of them for AC cabs just amused that they where all the same part number boy was i wrong.I was in the mountains and had jack frost on the window just got done pulling my heater out and put new gaskets in and heater core and controller it was like 20 degrees ay 12 am i fired up the truck ran back in to the cabin to let the truck warm up.my friend told me to go wait truck this is after 5-9 mins of the truck running Opened up the door Man a heat blast it was up to 140 degrees I tuned off the engine and turn off the heater. my friend came out and asked me what i was doing i told him the truck is warmed up he said now it will take another 5 mins for the truck to warm up i told him not to bother putting a coat on leave the tang top on.He though i was NUTTS. Half way down the hill he looks at me and said are you trying to cook me like a bake potato laughed my ass off we dove home with the window down and let that thing blow on fast |
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#19 |
Scrapper 1
Join Date: Jan 2007
Location: Riverside Calif
Posts: 1,649
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Re: heater doesn't turn on
even tho the new fan motor will not come with the fan it not hard to take off I like the metal round fan cage over the plastic one.1 think i have noticed is the plain heater blower fan is slower then the AC heater fan.Like most people on a cold day or night we want are heat now.
But getting one that is for the AC instead of the heater only is way better.it blows very hard and sence you have 2 settings high and low I buy the AC blower motor over just the heater blower motor.In my 1972 3/4 ton truck Guy at the parts counter made a mistake and gave me 3 AC blower motors i needed 2 of them for AC cabs just amused that they where all the same part number boy was i wrong.I was in the mountains and had jack frost on the window just got done pulling my heater out and put new gaskets in and heater core and controller it was like 20 degrees ay 12 am i fired up the truck ran back in to the cabin to let the truck warm up.my friend told me to go wait truck this is after 5-9 mins of the truck running Opened up the door Man a heat blast it was up to 140 degrees I tuned off the engine and turn off the heater. my friend came out and asked me what i was doing i told him the truck is warmed up he said now it will take another 5 mins for the truck to warm up i told him not to bother putting a coat on leave the tang top on.He though i was NUTTS. Half way down the hill he looks at me and said are you trying to cook me like a bake potato laughed my ass off we dove home with the window down and let that thing blow on fast If you really want your heater to work good best off to take out the old heater core replace all the gaskets that are 35.00 to 40,00 heater core 40.00 and a blower motor and new hoses 13.00 trust me when it get cold and your kids or wife or girl friend in sitting in that cab they will love you for that heater. if you have not rodded out your radiator lately might be a good idea they will help you get the best heat out of your truck.I love working on heaters on the old 1960-1972 easiest things to do take 2-3 hours but when your finished and it works you feel some love to your truck and some pride |
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#20 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
Hey Thanks for the info I just have question with the ac motor. it will just hook up just like the non ac one? if so i'm all over that the fiance hates the cold so looks like when I get some money I'll be changing replacing all of the above first i'll change out the motor.
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#21 |
Senior Member
![]() Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,912
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Re: heater doesn't turn on
Should be just the same. One wire (the big plug with the orange wire) goes to the terminal on the blower motor, and the black wire goes from one of the mounting screws to a good ground.
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#22 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
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#23 |
Senior Member
![]() Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,912
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Re: heater doesn't turn on
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#24 |
Registered User
Join Date: Jun 2012
Location: SALT LAKE CITY, UTAH
Posts: 396
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Re: heater doesn't turn on
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