Question about 1998 Dodge Ram 2500 2WD

1 Answer

No heat when set on ''High'' and ''Hot''

Since we got our truck November 2007, We have always had the problem in the winter time with the heat not getting hot. Mechanically speaking, the truck is fine. No over heating(I've had this issue in the past with a car of mine, and it affected the warmth in the car.), we have coolant, not water in the radiator, fans turn on when they should, the engine runs at an ideal temperature all the time. Just no warmth in the truck! Me, being a small female, I get chilled, and would rather take my clunker of a car, just so I stay warm! We'll have the fan speed on high, and the temperature knob all the way up, and the inside of the truck gets lukewarm.

I've suspected Heater Core, my dad suspects heater control valve, or thermostat... And I'm trying to keep my fiance from going to a repair shop on something that could be done, possibly, by myself! Please help!

Posted by on

  • Stephanie W
    Stephanie W Dec 18, 2008

    Can you possibly translate that to layman's terms?

    Flushing the lines/system could possible solve this? How would somebody be able to tell if there was a possible blockage? or would that infrared gun be pretty much the only way?



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 599 Answers

Circulation of hot hot water to inside cabin to heater core ..and fan blowing strong are all necessary here.....back flush system.. (good cooling system service) including flushing teh heater lines with all heater lines open ...refill and test... or to be sure replace thermostat and any suspect heater hoses at same time....a good shop with infrared gun can trace heat and locate blockage if necessary... good luck

Posted on Dec 18, 2008

  • milespeed Dec 18, 2008

    welll..ok...let me slow down here for ya ..was busy with other issues.... drain radiator..then, disconnecting the lower radiator hose and radiator cap...put hose in lower radiator and flush til clear through radiator overflow /cap area...close cap and do again..this time with upper hose off so the water from bottom flows clear out upper radiator hose you disconnected..all the while have your heater valve open and all settings to high full heat..(engine off).... as this being a wet and messy job i suggested you change out thermostat too an flush in there..change out or take off hose at heater valve and flush through there as well......advise me if i am confusing or can help more ... good luck



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

97 Dakota 3.9 Vents let hot air into the cab like the heat is on even when the heat is set to off and the temps turned to cool.

There are flaps called blend doors, they can be ether electronic or manual ( cable operated) and sometimes vacuum, they are the ones responsible for making the HV/AC blow cold or hot air. Just go under dash and adjust the temperature cold/hot and listen carefully for the blend door to move and or an actuator to close or open.. Best thing is just to take out actuator and adjust it manually...
And you probably have a bad thermostat thats why the truck wont reach operating temperature. Previous owner may have taken it out to try to hide and overheating problem. Good luck ??

Jul 31, 2016 | 1997 Dodge Dakota

1 Answer

What was the weather like in Plymouth in November 1950?

phone the weather bureau for that information

Jun 06, 2016 | Plymouth Cars & Trucks

2 Answers

My 2008 Corvette has ticking noise when it is on a cold start,but is quiet after warming up.


Feb 20, 2015 | 2008 Chevrolet Corvette

1 Answer

2007 chevy impala, the hot are take a long time to heat up

that's a possibility. Typically if the thermostat is stuck open on newer vehicles the check engine light will come on and have a P0128 code for low coolant temperature.

I’m happy to assist further over the phone at

Apr 08, 2013 | 2003 Chevrolet Impala

1 Answer

My 1998 cadilac catera blows only hot heat with the ac on, trying to find out what would cause this . the pressure guage when refilling the ac always hits the hot /high area how can i fix it so i can...

there is about 6 actuators that open and close the doors that divert hot or cold air to certain vents on both sides of car (because of dual climate controls) there is 1 main actuator that opens a door between the heater core and the a/c but most of the dash will have to come out to fix properly , or do what I did disconnect the arm or wires from the actuator and manually open to the position you want it at . My a/c dont work and I had no heat over the winter so mine are set 2 always put out heat when the controls are on. You can turn your heat and a/c controls on and off and hear them running, the problem is the plastic gears get stripped out, some of the doors may not want to stay open in the position you want so I tied them up with a wire

Sep 03, 2011 | 2001 Cadillac Catera

1 Answer

Its to hot driving this car

Two ways to help with your problem....You can get a section of aluminum or tin and fashion a heat shield to cover the area that is making the floor hot. when attaching it, use spacers so it stands away from the attachment points. You can also buy heat wrap and heat "blankets" form many race suppliers (I know for sure they are available from Summit racing). Wrap goes on pipes etc and blanket can be installed under your rug. I know it's annoying to have to fix a poor factory design, but at least there is a cure.
Good luck!!

Sep 03, 2009 | 2007 Ford Focus (3 Door) Hatchback

1 Answer

Hot water inside the car driver side

Sounds like your heater core, that's the only hot water/coolant in your car. The heater core is what gives you heat in the winter by the air flowing through the coils. It circulates the water that runs through the engine and will have a coloring to it. Its probably on the inside of the dash and is always a pain to fix. If you don't know much about cars your are gonna have to take it somewhere, or get a friend to bypass it, but then you wont have heat in the winter. :(

Jun 20, 2009 | 1996 Volvo 850

1 Answer


if the rheostat (variable resistor) is open on all setting on the hot side it will not matter where you put it. All the way on high or all the way on low it would not understand that its on hot.

Aug 12, 2008 | 2000 Mitsubishi Eclipse

Not finding what you are looking for?
Cars & Trucks Logo

133 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dodge Experts


Level 3 Expert

83850 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22413 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8841 Answers

Are you a Dodge Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides