Last post on Sep 23, 2013 at 3:55 PM
You are in the Dodge Dakota-2010 and older
What is this discussion about?
Dodge Dakota, Truck
#202 of 261 2001 Dodge Dakota HVAC blower not working
Dec 21, 2009 (12:11 pm)
Had an intermittent problem with the blower on my heater not working. I knew the blower itself was fine, so I figured there was an open circuit somewhere. Sifted through a lot of comments online saying that it was most likely a bad/shorted resistor under the passenger side dash. Bought one for for a grand total of $12.10 and replaced it hoping to take the easy way out. I was crossing my fingers that my investment would solve the problem. It didn't. Then I went and looked at the contact pins on the old resistor. They looked fine. I saw no evidence of the connection getting hot.
But anyway, to shorten this story. I can get the blower to work full blast pumping wonderful amounts of heat with one little thing I discovered by accident. If I just barely apply pressure to the key in the ignition (without actually turning enough to restart it), the blower comes on full blast and turns wonderfully. Should I assume there are some bad contacts in the ignition switch, or is my action creating a circuit that shouldn't be made under normal circumstances. I know this is a strange question, but any input would be appreciated.
#203 of 261 Hvac controls? not working properly...
Jan 03, 2010 (2:20 pm)
My vent control on my dash, only works on defrost and floor mode, If i turn it to face vents i get nothing? Nothing on max a/c either.
Not sure why, any ideas?
If i turn it to all windshield vent ( defrost ) it works, and split windshield and floor vent it works,it just does not work on the face vents.
I popped off the dash cover and removed the controller assemble to check the vacuum line leading to the back and there all connected, non looked blocked or cracked, and nothing was kinked either.
Does anyone have a HVAC vacuum line diagram, so I can see what color vac line controls the face vents?
any help would be awesome! I'm not looking forward to taking this issue to the dealer, I know they will rip me off for this repair!
I NEED SOME PICS! DIAGRAMS SOMETHING!!!
#204 of 261 fan stoped working
Jan 08, 2010 (5:01 pm)
Can anybody tell me where the resistor is located thanks.
#205 of 261 Re: fan stoped working [dakota9474]
Jan 08, 2010 (5:16 pm)
I am assuming you are asking about the blower-motor resistor. Keep in mind that the resistor itself is mounted inside the air-plenum so the flowing air can keep it cool. Without airflow, it would run red-hot and burn up quickly.
Depends on what year you Dak is... but on my 2000 it is under the Dash behind the glovebox. One electrical plug and 2 screws and it comes right out. The part costs about $15.
This webpage may help you out.
#206 of 261 Not blowing hot air
Jan 20, 2010 (5:57 am)
I have a 01 Dakota with the 4.7. recently it stopped blowing hot air, just warm. i have replaced the thermostat, and it worked great.. for a week. did i do something wrong or did something else go bad?
#207 of 261 Re: Not blowing hot air [mnms218]
Jan 20, 2010 (4:01 pm)
It sure sounds as if you have air trapped in the system.
The 4.7 L semi-hemi can be tricky to "burp" all the air out of the cooling system. There is a special air-valve located at the highest point of the system to assist in "burping" the air out.
Dont forget to check the resivour regularly for about a month. Each time the engine cools, it will suck in more antifreeze.
#208 of 261 Re: Not blowing hot air [mnms218]
Jan 20, 2010 (4:03 pm)
First make sure the coolant is full. Don't rely on the reservoir level. Take the radiator cap off when cold and be sure the radiator is full. If the cap is bad or if there is a leak in the hose to the reservoir it will not draw coolant back into the radiator when the engine cools off. Also if you had an air pocket when you filled it up you could have been low on coolant from the start.
Then with the engine at operating temp. and the heater on high both heater hoses should be hot. If one is cool the heater core may be plugged or if it has a heater control valve it may not be all the way open.
It is also possible that your blend door is not operation properly. You could have a bad thermostat. Not likely but possible.
#209 of 261 Re: Hvac controls? not working properly... [jamoka3]
Apr 29, 2010 (7:08 pm)
I have the same problem with the vents in my 1999 Dakota except when not under load, all works fine. When accelerating, all face vents go to defrost. I assume its related to vacuum . Did you find a solution? I could not find where anyone answered your thread. Thanks TOm
#210 of 261 Re: Hvac controls? not working properly... [yellowwood]
Apr 30, 2010 (3:18 am)
Not sure if this is related, but most cars I'm familiar with (our Dodge minivans being a prime case), when the engine is under load (accelerating), the AC compressor disengages and the HVAC system switches over to recirculate, so as to not pull hot air into the vehicle. I don't remember if, when this happens, the HVAC goes to defrost mode or not.
#211 of 261 Re: Hvac controls? not working properly... [yellowwood]
Apr 30, 2010 (2:09 pm)
This sounds like a bad check valve on a vaccum reservoir.