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Heating & Cooling 2nd Gen Dodge Ram Heating & Cooling Problems and Questions.


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  #1  
Old 02-10-2014, 05:25 PM
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Default Infamous Heater Core Replacement

Afternoon everyone!

So I just completed replacing my heater core in my 98' Dodge Ram with Manual tranny and A/C. I was getting window fogging, smoke billowing from the vents and no heat!! Its -15 celsius today here in Ontario, Canada. I mean the truck does have 250,000 KM on it but I drove like this for a week and enough was enough!

Pretty much from start to finish it took 4 hours. It surprisingly went very smooth and I didnt end up with any extra bolts and did not damage any parts or pieces throughout the job. As you can see from the photo the heater core was original... seeing how it had the insallation foam on it.... which is one reason to why they rot and leak.

It is not as daunting of a job as some mechanics/shops may make it sound. I almost paid $500 plus tax for this job but decided to go at myself and in the end it cost me $70 after tax for the new heater core and 4 hours of my time.

I attached photos to this post. The picture of the clip is the clip that is under the dash that holds the clamp over top of the hoses. This clip is virtually impossible to get a philips screw driver on so I would suggest pulling the heater box away from the firewall first in order to loosen this. I had to actually slide myself up in between the back of the dash and the firewall to get at it. You will need to pull the heater box away from the firewall anyways in order to get the new heater core into the heater box and the lines through the firewall. This is done by removing 4 nuts under the hood on the firewall (1 is behind the computer that is mounted to the firewall under the hood on the passenger side, 1 is behind the A/C canister, 1 is visible but you have to deal with a bracket in the way and the last one is near the middle of the firewall. Inside you will have a nut to remove near the top right of the heater box and another 2 nuts at the end of the ground strap. The ground strap is in between the 2 nuts. You will see what I mean haha. Once all the nuts are off you can pull the heater box away from the firewall. This is a must do move and will save you tons of time.

I will post a more in depth step by step but for now if you have any questions let me know. I literally just finished today at 2pm.

Thanks!

This photo is the the finsihed job all back together (besides the center councel and panel) and ready to heat!!


The ones below obviously during the job...
Attached Images
File Type: jpg 20140210_102728.jpg (127.7 KB, 92 views)
File Type: jpg 20140210_105600.jpg (122.4 KB, 90 views)
File Type: jpg 20140210_105929.jpg (129.3 KB, 77 views)
File Type: jpg 20140210_111027.jpg (98.8 KB, 79 views)
File Type: jpg 20140210_120728.jpg (130.5 KB, 89 views)

Last edited by canuckboy; 02-10-2014 at 05:39 PM.
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  #2  
Old 02-10-2014, 06:36 PM
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RogerRamJet RogerRamJet is offline
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Voonderbar! Nice DIY job and great show and tell. And you didn't have any left over pieces or parts? WOW! That is impressive. You musta done something wrong... er, uh... right.
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Old 05-05-2014, 03:20 PM
tomcatg tomcatg is offline
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Probably be tackling this myself soon. Thanks for the writeup!
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Old 09-20-2015, 02:22 AM
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I'd like to know whose heater core that is, having flare fittings to make that firewall connection without pulling the whole box loose is the key to getting this done in 4 hours (and not 4 days).
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Old 11-06-2015, 11:19 AM
DerekD204 DerekD204 is offline
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I problem will need to be doing that soon I had that problem and took mine to the shop and had it fixed but its toll doing it so, I think min needs to be replaced
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