Go Back   DodgeForum.com > Dodge Trucks > Dodge Ram > 2nd Gen Ram Tech
Sign in using an external account
Register Forgot Password?


2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

No heat at idle

Reply
 
 
 
 
Thread Tools Search this Thread
  #1  
Old 12-16-2008, 09:10 AM
aliasmax aliasmax is offline
Registered User
Garage is empty, add now
 
Join Date: Jul 2008
Vehicle: 2001 dodge ram 5.9 stock
Posts: 22
Default No heat at idle

I tried searching for this problem with no luck so here goes. 2001 dodge ram regular cab, auto trans, 5.9cid, 98,000 miles. I had a very leaky radiator, so i finally broke down and bought a new one. Last weekend i swapped out radiators. Everything seemed to go fine but after driving it my heat goes away at idle. driving the truck the air comes out hot but at a stop light the air cools off drastically. as soon as i stop so does the hot air, as soon as i take off the the hot air comes back. The blower motor stays at speed, the air coming out just gets cold at idle. Every time i check fluid level its full. Any help would be greatly appreciated. thank you.
This ad is not displayed to registered and logged-in members.
Register your free account today and become a member on Dodge Forums!
Reply With Quote
  #2  
Old 12-16-2008, 11:40 AM
BULLRAM's Avatar
BULLRAM BULLRAM is offline
Veteran
2009 Dodge Ram 1500
 
Join Date: Aug 2007
Location: HOUSTON,TEXAS
Posts: 495
Default

Do a search on this subject, I listed some of the things I found, feel the hoses at idle when this is happening, it tells you which direction to go next, if they are both real hot, then it is a flow distribution problem, with the blend door or something else, if one hose is real hot and the other is just a little warm then you could have a huge air bubble in it, , this happens sometimes to my workers when the radiator is replaced or a large amount of water is lost.....
__________________
99 -EC-(GONE) 18 WHEELER PARKED ON THE FREEWAY AT NIGHT NO LIGHTS AROUND I DROVE INTO THE BACK OF IT
09- 2WD- CCSB -5.7 AUTO-TRAILER PACKAGE-Y.E.S. SEATS-REN-DUALS-LONE STAR PACKAGE-K/N DROP IN- SIDE DECAL REMOVED - UPDATED HEMI EMBLEMS-20'S- SUPERCHIPS 3865--7 INCH CST LIFT
Reply With Quote
  #3  
Old 12-16-2008, 04:25 PM
aliasmax aliasmax is offline
Registered User
Garage is empty, add now
 
Join Date: Jul 2008
Vehicle: 2001 dodge ram 5.9 stock
Posts: 22
Default

Okay after driving the truck on the expressway for 25 miles i popped the hood and felt all the hoses. the two heater hoses where hot, the top radiator hose was hot but the bottom radiator hose was ice cold.
Reply With Quote
  #4  
Old 12-16-2008, 04:57 PM
dodgeman22's Avatar
dodgeman22 dodgeman22 is offline
Veteran
Garage is empty, add now
 
Join Date: Dec 2007
Vehicle: 99 dodge ram 1500
Location: Saskatoon, Saskatchewan
Posts: 349
Default

did u change your t stat and how cold is it there??
__________________
99 dodge ram 4x4 towing package flopro exhaust cold air intake throttle body spacer
DODGE the father RAM the daughter
Reply With Quote
  #5  
Old 12-16-2008, 07:06 PM
aliasmax aliasmax is offline
Registered User
Garage is empty, add now
 
Join Date: Jul 2008
Vehicle: 2001 dodge ram 5.9 stock
Posts: 22
Default

No i did not change the thermostat. the temp gauge is in the normal position when warmed up. The outside temp was in the thirties on the weekend and in the single digits Monday and Tuesday. It did not make a difference from the thirties to single digit temps, no heat at idle but good heat driving.
Reply With Quote
  #6  
Old 12-17-2008, 11:24 AM
aliasmax aliasmax is offline
Registered User
Garage is empty, add now
 
Join Date: Jul 2008
Vehicle: 2001 dodge ram 5.9 stock
Posts: 22
Default

Is it possible that a worn serpentine belt or a water pump cause the no heat at idle?
Reply With Quote
  #7  
Old 12-17-2008, 12:06 PM
sungod sungod is offline
Veteran
1998 Dodge Ram 2500
 
Join Date: Jun 2008
Vehicle: 1998 Ram 2500 4x4
Location: Fairfax VA
Posts: 389
Default

I am in the same boat and at wits end. Air trapped in the line is the only thing that can be left to try to remove. My last and final attempt is going to bleed the core by using that funnel that sits on top of the radiator and the prestone flush kit. I am going to pinch off the outlet line and open the cap on the prestone flush kit. That force liquid through the core backwards and hopefully push out any air. I can then cap it off as the liquid flows since the funnell will hold a fair amount of coolant so I don't have to worry about empting out the radiator and being back in the same situation.
Reply With Quote
  #8  
Old 12-17-2008, 01:29 PM
pcfixerpro pcfixerpro is offline
Champion
Garage is empty, add now
 
Join Date: Apr 2007
Vehicle: 01 Ram 4x4
Posts: 2,568
Default

Quote:
Originally Posted by sungod View Post
I am in the same boat and at wits end. Air trapped in the line is the only thing that can be left to try to remove. My last and final attempt is going to bleed the core by using that funnel that sits on top of the radiator and the prestone flush kit. I am going to pinch off the outlet line and open the cap on the prestone flush kit. That force liquid through the core backwards and hopefully push out any air. I can then cap it off as the liquid flows since the funnell will hold a fair amount of coolant so I don't have to worry about empting out the radiator and being back in the same situation.
Before you go through all that... I thought I would let you know I have the same issue. I never sit in my truck and let it idle because of that problem. I just figured the truck is cooling faster than the engine makes heat at idle. The other problem I have is it takes forever to warm up. Even though, I'd rather have my truck run cooler than hotter. You might try blocking off part of the radiator and see what happens.
Reply With Quote
  #9  
Old 12-17-2008, 01:38 PM
ophidia ophidia is offline
Captain
Garage is empty, add now
 
Join Date: Sep 2008
Vehicle: 1999 Ram 1500 Laramie, 5.9L, 4X4
Location: Fargo, ND
Posts: 540
Default

I blocked off part of my radiator with cardboard and it seemed to help, but I got hardcore stuck and had to rip it off as the truck was overheating. Turns out the fan was stopped by snow, which is what was causing it to overheat.

Anyway, moral is cardboard helps.
__________________
1999 Ram 360 auto 4x4
And Torque monster V2K Limited:
Reply With Quote
  #10  
Old 12-17-2008, 02:19 PM
aliasmax aliasmax is offline
Registered User
Garage is empty, add now
 
Join Date: Jul 2008
Vehicle: 2001 dodge ram 5.9 stock
Posts: 22
Default

thanks for all the reply's. card board won't work for me. my transmission cooler is in front of my radiator. It just seems strange that my heater worked really good before the radiator change and now it doesn't. When the radiator was leaking the heater would shoot out cold air when the antifreeze got low at idle but after i filled it up it would throw heat at idle again. It does seem to take longer for the temp gauge to move now also.
Reply With Quote
Old 12-17-2008, 02:19 PM
Reply
 
 
 




Tags
2001, 2003, air, blows, caravan, cold, dodge, heat, heater, idle, idling, intrepid, problem, ram, speed, stratus

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Join DodgeForum
Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -4. The time now is 02:14 AM.

Internet Brands, Inc.


Contact Details & Emails

Search Engine Friendly URLs by vBSEO 3.5.2