Re: 2001 1500 Dodge Truck Heater core ideas....
[Re: 79volare]
#919388
02/02/11 01:36 AM
02/02/11 01:36 AM
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Joined: Jan 2007
Posts: 10,141 A Red State
SNK-EYZ
I Live Here
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I Live Here
Joined: Jan 2007
Posts: 10,141
A Red State
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Are you saying it's blocked or is it leaking?
To replace it requires pulling the dash back to remove the HVAC box.
If you've never done one before plan on spending 6+ hours doing it.
Kayse can't keep up at all now. lol
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Re: 2001 1500 Dodge Truck Heater core ideas....
[Re: 79volare]
#919390
02/02/11 01:58 AM
02/02/11 01:58 AM
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Joined: Jan 2007
Posts: 10,141 A Red State
SNK-EYZ
I Live Here
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I Live Here
Joined: Jan 2007
Posts: 10,141
A Red State
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When you say "flushed" did he back flush it as in reverse the flow to push the stuff that would be blocking it out?
He does have enough antifreeze in it so it's not frozen correct?
Kayse can't keep up at all now. lol
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Re: 2001 1500 Dodge Truck Heater core ideas....
[Re: SNK-EYZ]
#919391
02/02/11 09:30 AM
02/02/11 09:30 AM
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Joined: Jan 2003
Posts: 75,047 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,047
U.S.S.A.
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Quote:
Are you saying it's blocked or is it leaking?
To replace it requires pulling the dash back to remove the HVAC box.
If you've never done one before plan on spending 6+ hours doing it.
I was afraid of that , my 2000 cummins Ram is not blowing very cold , the rad is full and it comes up to full temp ... BUT my antifreeze is about 130k since last flush and my thermostat is the original , hoping it's not the core
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Re: 2001 1500 Dodge Truck Heater core ideas....
[Re: JohnRR]
#919393
02/02/11 10:08 AM
02/02/11 10:08 AM
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Joined: Jan 2008
Posts: 299 East Brunswick, NJ
finadk
enthusiast
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enthusiast
Joined: Jan 2008
Posts: 299
East Brunswick, NJ
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The ram requires removal of the dash to replace the heater core. If it is not leaking I would try to flush it. My son just bought an Audi a4 and these are known to have issues with blocked heater cores. The solution that I found on the Audi forums is to back flush the core and use CLR Calcium, Lime Rust remover from Home Depot or Lowes. I have used Prestone radiator flush as well to clear out a severely plugged GM radiator after someone mixed green and red antifreeze but that is another topic altogether. CAUTION if you read the fine print on the CLR bottle it says not to use on aluminum or brass. I believe that this is because it will discolor the metal. I went ahead because there were so many good results posted and I was only going to leave it in for a limited period of time. I picked up some heater hose and used a garden hose repair kit to attach a female garden hose end to one side and connected the other side to the outlet of the heater core. Another length of hose from the inlet to the heater core to a bucket. Ran the hose and filled and emptied the bucket a few times and good amount of sediment came out. Next i lowered my compressor output to no more than 20 lbs. Remember the system is designed for 16 lbs and used an air nozzle to blow out the remaining water. Using a small funnel I poured the CLR unto the heater core until it came out the other hose. The directions called for a 50/50 CLR water mix but I figured any water left in the core would dilute it enough. I let it stand for about an hour and started flushing again. I alternated between water and low pressure air until the sediment stopped coming out. (AGAIN I caution about using air pressure, if the core is on its way out you will have a leaking core when you are done, this happened on a Firebird that I was trying to de-sludge but at that time I did not think to reduce the pressure and was forcing water through at 90 lbs of pressure) From there top off the heater core with antifreeze, reconnect the heater hoses, check coolant level and hopefully you will have heat. Scott
Scott
1956 Dodge Custom Royal Lancer (408 Stroker, 4 Wheel Disc Brakes, Rack & Pinion, 6 speed)
2002 Dodge Ram 1500 Quad Cab
1976 Corvette
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Re: 2001 1500 Dodge Truck Heater core ideas....
[Re: 79volare]
#919394
02/02/11 11:18 AM
02/02/11 11:18 AM
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Joined: May 2003
Posts: 8,430 St Charles MO
70Coronet500Vert
master
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master
Joined: May 2003
Posts: 8,430
St Charles MO
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"remove the dash" is a relative term. You need to pull the kickpanels, you need to remove the ABS sensor and bracket, you need to drop steering column onto front seat. You need to loosen the bolts behind the kick panels that hold the dash in place.
The dash will rotate out towards you. At this point, I connected a strap to the dash frame, ran it through the pull on the upper frame of the door, then over to the rear door and cranked ituntilt he dash lifted high enough for me to get the heater core out.
I had never seen one before and did it alone in about 4 hours.
No matter how responsible he may seem, never give your gun to a monkey! 1970 Coronet Vert 1972 Charger 1974 Satellite Sebring Plus Sundance 2001 Ram 4x4 2002 Intrepid 2006 300C
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Re: 2001 1500 Dodge Truck Heater core ideas....
[Re: SNK-EYZ]
#919396
02/03/11 10:50 AM
02/03/11 10:50 AM
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Joined: Jan 2003
Posts: 75,047 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,047
U.S.S.A.
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Quote:
Quote:
Quote:
Are you saying it's blocked or is it leaking?
To replace it requires pulling the dash back to remove the HVAC box.
If you've never done one before plan on spending 6+ hours doing it.
I was afraid of that , my 2000 cummins Ram is not blowing very cold , the rad is full and it comes up to full temp ... BUT my antifreeze is about 130k since last flush and my thermostat is the original , hoping it's not the core
John, If it's heating up normally, I'd back flush the heater core before replacing it. It's easier and cheaper.
It wouldn't hurt to verify that both heater hoses are getting hot. If only one is it's got a blockage. If both are it could be the temp control door isn't working in the heater box. If a 2000 is like my 2001 the doors are controlled by electric motors/servos.
Thanks , for that ... I made a mistake above , my heat blows lukewarm , if I switch over to max A/C position I get warmer air coming out but it's not blowing down at my feet.
It doesn't help that the seat heater is not working on the drivers side anymore, when I first got the truck you could be dressed in shorts and a T shirt in the winter and be very comfy at 0 degrees outside.
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Re: 2001 1500 Dodge Truck Heater core ideas....
[Re: 70Coronet500Vert]
#919397
02/03/11 11:12 AM
02/03/11 11:12 AM
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Joined: Nov 2009
Posts: 2,177 ill
dennismopar73
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,177
ill
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Quote:
"remove the dash" is a relative term. You need to pull the kickpanels, you need to remove the ABS sensor and bracket, you need to drop steering column onto front seat. You need to loosen the bolts behind the kick panels that hold the dash in place.
The dash will rotate out towards you. At this point, I connected a strap to the dash frame, ran it through the pull on the upper frame of the door, then over to the rear door and cranked ituntilt he dash lifted high enough for me to get the heater core out.
I had never seen one before and did it alone in about 4 hours.
if you haveto change the heater core,, while you are there ,,change tha ac core while youre there too, ask me how i know , 2 months after changing a core ,, ac develope a leak guess where? yep pulled the dash as you see here worked great , just had to redo something i just got thru doing
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