Question about 2008 Dodge Ram 1500 2WD

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The hoses that are going to heater core when i squeezed them they are solid and truck overheats if i don't leave heat running and makes a noise.

1999 5.2l v8 engine i believe the noise sounds like water pump but are the hoses suppose to be hard like that.

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  • Anonymous Dec 04, 2012

    Old OE Radiator may need replacing



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Yes if the water pump is not pumping the hoses will get hard and solid the way you explained but the other cause of it can be the thermostat. replace it its a very inexpensive part.

Posted on Dec 04, 2012

  • mizchrystne
    mizchrystne Dec 04, 2012

    thankl you i'm having it fixed as we speak....


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  • Dodge Master
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Yes the hoses are to be hard and both suppose to be hot

Posted on Dec 04, 2012


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Posted on Jan 02, 2017

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SOURCE: smell antifreeze, no leaks, gurgleing behind drivers side dash.

there is air in system causing gurgling/set heater to defrost and check for sweet smell. do while stopped if core is leaking windshield will fog up and be hard to clear.

Posted on Feb 28, 2009

  • 1 Answer

SOURCE: cooling system requires burp.

Hey Tim,

I had the same problem with my 1997 Dodge ram 5.2 liter truck. I changed the water pump and it was actually that little o-ring on the heater hose that fits into the water pump on the top right side of the water pump. Also that metal piece on the return heater hose erodes after a while and rusts because it fits inside the water pump. I changed the metal part of the heater hose and the o-ring. I even changed the thermostat because it was easy to access. After I changed all of that I still heard the water running when I would rev the engine. After further investigation, I found that my bypass hose was leaking. The leak was small so I didnt see water on the ground and when the engine was hot it would just evaporate. Changing the bypass hose was more difficult than the water pump. You have remove so much just to get at a 3 to 4 inch hose. After I changed it, I filled up the radiator AGAIN and left the radiator cap off for about 10 minutes and added coolant as the level dropped. It worked, no more water running sound. Hope this helps.

Posted on Apr 07, 2009

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SOURCE: 2002 dodge 1500 Changed radiator, thermostat, and hoses. No heat

Why was radiator replaced?Did it have heat before ? If it was plugged, the heater core may also be plugged. Try flushing it with a water hose in both directions. I dont know why the botton radiator hose would be cold, the radiator should be a uniform temp and the air coming through the radiator should be HOT, when the engine is at operating temp. What condition was the old coolant? if it was rusty, the water pump may have lower flow than normal.

Posted on Nov 19, 2009

  • 172 Answers

SOURCE: I have a 1998 Dodge Dakota 5.2/ V8 4X4 and was

Check the coolant flow control valve which should be located next to the heater core. It may be electrically or mechanically controlled. After you get the blend door and housing off and can access the heater core, bring your engine up to operating temperature, check that the coolant flow control valve works and see if the heater core heats up. If not it will be either plugged or a low coolant situation. You do not need to change out the evaporator, however it may not hurt to clean it externally with a condenser cleaner such as nubrite, and blow out with air. This would be a good time to change your cabin air filter also.

Posted on Jan 15, 2010

  • 1586 Answers


Did you burp the air out of the system after changing those parts? It sounds like the thermostat isn't opening which is why the lower hose is still cold. Click my screenname, go to my tips and tricks, and choose the one about burping the cooling system - it may help you out.

Posted on Jan 28, 2010

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1 Answer

2006 uplander has new wp heater c thermo and flushed twice has heat for while then you shut down and come back later and only will blow cold anyone know the fix

Make sure you refilled to top antifreeze after you run motor it has to be full and will burp ounce are both sides of the heater hoses hot they have to be if one hose is not ANF the other when motor is full not the core is stoped with gunk/ rust will need take not side loose the take the remaining hose that goes yo heater core that was cold off the block leaving the loosrmef hose in yet hand then take garden hose and force wayrt through the hose backwards the gunk/ rust will whose out the pope through firewall dirt gone if the heater core is clogged completely try squeezing toilet bowl cleaner into the stopped up end otherwise get the core changed

Dec 12, 2016 | Cars & Trucks

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I need to know how to replace the heater core. I know where it's located but need details on how to take it out.

Hello Heather
never ceases to amaze me the jobs that young ladies will take on this site. Way to go!

Drain Coolant. Remove hose, remove fixing screws and replace.

Fill coolant system, run to full heat, squeeze radiators hoses with gloves on to burp the system and get rid of air. Leave to cool and top up.

make model replace heater core
almost certainly you will find a YouTube video.

Jan 21, 2016 | Cars & Trucks

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OK heres another one on same Cherokee....back flushed the heater core...changed thermostat and still blowing lukewarm heat... 3 people said sounds like a cracked head or head gasket but wouldn&#39

you are air locked in the heater core you will have to remove one heater hose and fill anti freeze into that hose until coolant runs out of the open nipple then put hose back on fast top off coolant start engine run til both hoses are hot for heater core..if only one is hot coolant is not circulating

Nov 18, 2014 | Jeep Cherokee Cars & Trucks

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I have a 2001 Jeep Grand Cherokee. With heat on, there was a loud noise coming from the passenger dash, to the point where I felt the rattle/vibration on the steering wheel. There was an odd smell as...

First things first, you need to take the thermostat housing back off and clean all of the old gasket material off the surfaces, then install a new gasket and tighten the bolts down evenly then once they're tight make sure you torque them down evenly also if you don't you'll warp the pieces and cause another leak.

Second, your heater isn't working because there's air in the heater core or in one of the heater hoses. So take one of your heater hoses lose, preferably the top one its easier to get to. Start the jeep and let it warm up completely so that the coolant starts to flow through the engine, once this happens coolant will also start flowing through your heater hose let it run for a couple seconds then reconnect it to your heater core. Once you reconnect the hose and tighten everything down you should get heat. If not, take the lower hose off and do the same thing let the coolant flowing work the air bubbles out of the heater core then put the hose back on.

Once you get all of that completed make sure you top off your radiator and your coolant overflow bottle with a 50/50 mix of coolant and water.

Nov 21, 2011 | 2001 Jeep Grand Cherokee

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I have a 1999 sierra 1500 4 w drive truck and my heat core blows only gold air. can anybody tell me what is the problem?

Before assuming the heater core is blown check the following.

1. Check coolant level while engine is cold.
2. Leave the radiator cap off and let the engine run. See if you can see the coolant circulate
when the engine is brought up to temperature.
3. Check the temperature gauge inside and note if the engine temp is correct.
4 Does the engine overheat?
5. Feel the heater hoses and check if they get hot.
6. Can you smell antifreeze inside the cab?

Start here and let me know.

Oct 31, 2011 | 1999 GMC Sierra

2 Answers

Over heats, water on floor board

  • Hi, I can help.

  • Your heater core is leaking onto your floorboad. This lowers your antifreeze as well as looses pressure and your car overheats. Your in luck though, you don't have to remove the entire dash to replace the heater core. You get to this heater core by removing the glove box. Last one I did in the freezing cold took me about 1 1/2 hours. Not to bad of a job.

  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.

Regards, Tony

Aug 29, 2011 | 2000 Cadillac DeVille

1 Answer

When my trailblazer over heats. there is fluid that leaks out of a drain hose on the fire wall. why is it?

Sounds like you may have water leaking out of your heater core.

This will cause an overheat condition, which you get because your engine cooling system can't pressure up as well.

You may also notice a kind of "sweet" smell to the air that comes from the air vents that blow when A/C or heater is on.

As water leaks into the A/C & Heater core compartment trickles to the overflow drainhose on the firewall. This is usually intended for the condensation of the A/C core but a leaking heater core will drain that way too.

From what I hear, I'd see about disconnecting the heater core hoses going into the firewall and maybe use a splice to connect them to each other OR get a two 5/8 bolts and a couple clamps and plug the hoses.

This allows you to drive car without overheating and buys some time to get you another heater core (basically a "mini-radiator") Its summer, so you don't need the heater right now but keep in won't have a heater until the core gets replaced.

Hope this helps...

Aug 13, 2011 | 2002 Chevrolet TrailBlazer

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Smoke coming through vents temp. gauge going up acting like its going 2 overheat turn heater on hot and smokes bad turn to cool and smokes a little my husband thinks it's the thermostat and wants to...

If the heater core is leaking, you would get a lot of steam that would smell "sweet". That would also leave you low on coolant, which could be a source of your overheating. If it's more of an electrical smell, you may have a blower motor or a blower motor resistor going bad, but won't cause the engine to overheat.

May 03, 2011 | Ford Ranger Cars & Trucks

1 Answer

Heater blows cold air,replace belts,themostat,accuator(door llender)

try flushing your coolant system. if you have air compressor.remove hoses to heater core and try ro blow it out. also with the car running see if the hoses are the same temp. if not try blowing out the heater core. also start the car and see if the water pump is pushing water out of the hose goimg to the heater core. also a bad radiator cap could keep it from heating up.let the car run and see if the top hose gets hard to where you can not squeeze it. if you can than replace the radiator cap. hope this helps leave comment.

Feb 13, 2011 | 2001 Chevrolet Silverado 1500

1 Answer


Make sure the blower runs, then make sure the heat and ventilation control doors move as they should. If you have hot coolant flowing through the heater core, air flow through the core, and appropriate air flow path, then you will have heat.

Aug 12, 2010 | 1992 Ford LTD

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