Dodge nitro heat blowing cold air

toyea
0

Asked by toyea Dec 28, 2012 at 07:18 PM about the 2009 Dodge Nitro

Question type: General

12 Answers

Daddy6986
135

if you are blowing cold air check the level of coolant, if full, check your thermostat, if that's fine then comes the most expensive the heater core. After that I'm out of thoughts.

6 out of 6 people think this is helpful.
cars4dummies
330

It's more complicated than that. The 1st two possibilities you mention would likely have more symptoms ie: temp gauge reading too hot/cold. The heater core always fogs interior windows and spews a sweet moist taste in the cabin when that goes bad unless car manufacturers have somehow relocated the heater core to the engine side of the firewall which might make those symptoms change. I think it's more likely you would have a bad "blend door" actuator or maybe the electronic switch on the dash is malfunctioning. The switch is the cheapest fix, if it's the blend door, it's very time consuming for a mechanic to disassemble the dash enough to access the actuator. You can expect to pay a shop $900 in labor to do that repair. The part is relatively cheap.

7 out of 7 people think this is helpful.
cars4dummies
330

After reading some more on forums and looking at my daughters '08 Nitro, I think there may be another possibility. The heater core can plug up. I removed the blend door motor from my daughters Nitro and manually moved the door. No heat yet, I plan to flush the heater core next. I'm reading that there can be some casting sand that may settle in there and perhaps corrosion from using the wrong anti-freeze or mixing different types (perhaps before we purchased the car). There's also talk of air getting stuck in the core, so it may be necessary to have a shop use a vacuum tool to flush the system properly.

13 out of 13 people think this is helpful.
cars4dummies
330

By the way, that $900 labor estimate was WAY off. Apparently, the shop that told her that never even looked at the car. You have to be REAL careful where you take your car these days. I had the blend door actuator off in about 2 minutes!

13 out of 13 people think this is helpful.
chico65
30

I REPLACED THE THERMASTAT , WATER PUMP ACUATOR ,AND MY RADIATOR FLUID IS NOT GETTING HOT , BUT MY NITRO IS NOT OVER HEATING WTF.I JUST BOUGHT A NEW RADIATOR ,SO GONNA TRY THAT

3 out of 3 people think this is helpful.
Wutcha Gonnado Boutit
80

If its overheating probably a thermostat stuck closed. If temp is normal and you have no heat then you most likely have casting sand stopping the heater core up. You can fix it for nothing too by the way unlike what others are telling. All you need is a 4 foot piece of garden hose and some hot tap water and an air tank with a rubber tip nozzle. I used a 10 gallon portable air tank with a blow nozzle from Wal Mart. Remove the hoses from the heater core at the firewall and attach garden hose on each heater core pipe. GENTLY blow out the antifreeze from the heater core into an empty milk jug, this way you can see the sand in the bottom of your jug. Pour hot water in the core till its full and blow again Gently. You dont need to kill it. Switch hoses every other time so you back and forward flush it. This will help to dislodge sand and debri from the core. Repeat until you get no more sand. Fill up the core with antifreeze before you fit the hoses back on it and your done. Take old antifreeze to recycler. Take your time unhooking the hoses or you can damage the core. Just be easy and go slow. Chrysler wanted 1200 bucks to fix my daughters nitro. I did it for free and an hour and a half of my time. Jeep and Nitro are horrible with the sand problem but its an easy fix and you dont need a heater core unless it is leaking. Be gentle with the air and go lightly until you get the feel for it. Its just sand so no need to blow too hard or you can damage the core. Lastly, spend the 1200 bucks on the wife and kids and have a great day.

6 out of 6 people think this is helpful.
Chad Dismore
20

Question I have a 2011 dodge nitro heat, and there's no heat at the feet. Actuator is fine, need to know what to think next, don't know how to dismantle dash to look at floor vent system any ideas?

2 out of 2 people think this is helpful.
Wutcha Gonnado Boutit
80

How long has it been this way? Did the problem come on all at once? Open it manually and if no heat then probably the heater core stopped up.

Nathaniel Jones
10

I have a 07 nitro that is blowing cold air with the heat on my coolant levels are good my water pump is good the actuators are working fine and both my heater hoses closest to the fire wall are both hot one a lil hotter than the other but both hot so my heat control valve should be fine my last option is my heater core so now my only problem is locating it I need some help with that I'm not at all a know it all DIY mechanic plz help

1 out of 1 people think this is helpful.
cars4dummies
330

Signs still point to plugged heater core (looks like an epidemic at this point). Update on my daughters Nitro: The radiator began leaking, so I bought a new one and while I was at it, replaced the thermostat and fan belt. After assembly, I installed a flush valve in the heater hose line, and used a Prestone super-flush. Still no heat after all this. A short time later, the symptom of sweet taste and fog inside the cabin arrived as predicted in my previous post. I bypassed the heater core for a quick-fix just to keep it on the road. I've been told the core location is buried deep inside the dash somewhere, and that is the expensive part to get replaced at a shop.

Wutcha Gonnado Boutit
80

Yes, you have to completely dismantle the dash to get to the heater core. Its an 8 hour job for an experienced mechanic, so if your core is leaking your luck is bad and it's the worst case scenario.

Wutcha Gonnado Boutit
80

You can NOT go by how hot the heater hoses feel at the firewall. The heater core can be full of sand and both hoses can feel hot. I have seen this before so beware. See my post on how to flush the core with water and compressed air.

1 out of 1 people think this is helpful.

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