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Bryan
Dodge Dakota
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12/08/2003
13:25:38
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 Subject: Heat not working well?!?
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My 92 Dak does not seem to heat up inside very well. The fan blows fine, but when the air blows through the cab it doesn't seem too warm. It clears the windshield ok, but I would like to at least be able to take my jacket off after driving for awhile.
Would changing the thermostat help any or would it be more of a heater core thing?
Thanks
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I EAT S-10s
Dodge Dakota
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12/08/2003
22:03:16
| RE: Heat not working well?!?
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Got my heat fixed today. The guy said my heater core was blocked with a bunch of junk. He flushed it or whatever he did and now my heat works fine.
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GB2000
Dodge Dakota
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12/09/2003
00:12:20
| RE: Heat not working well?!?
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Dan's original post in case that may help any of you:
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Here is an answer to the original question about the posters heater core. It is plugged. I had the same exact problem. I had flushed out my coolant system several times, but still no real heat coming from the heater. I then finally thought about it and realized the the convential way of flushing out a coolant system does not really flush out the heater core. The problem is that when you flush the coolant system out you normally connect the flushing water to the inlet side of the heater core hose and then backflush the system out through the radiator cap. This works fine for the engine and the radiator, but does not backflush the heater core. But for less than 99 cents and about 15 minutes you can easily backflush your heater core yourself. There was a suggestion on an earlier post to just reverse your inlet and outlet hose on the heater core and that would backflush it. This is true, but the gunk that is clogging up the heater core will just get flushed into you engine and will probably end up right back in your heater core. What you have to do is get a 5/8 inch female garden hose adapter. This can be purchased at just about any hardware store. Make sure it is the kind that slips inside the garden hose. Then with the engine cool you need to disconnect the outlet hose of the heater core from the engine. You need to do this at the water pump connection, which should be on the driver's side of the engine. Then insert the garden hose adapter into the end of the hose. Then disconnect the heater core inlet hose from the engine connection. On my Dakota this is easily done at the splice that is on the passengers side of the engine. This splice is where you normally connect to flush out the coolant system. Then hook a garden hose up to the outlet hose and turn on the water. Have someone help you turn on and off the water as you flush out the heater core. Try and collect atleast the first 2 gallons of stuff you flush out and dispose of this according to your local laws. After the first 2 gallons all you should get out of your heater core is dirty water. This should be ok to just dump on the ground but make sure first. You will probably have to flush the core for a good 5 minutes to fully clean it out. Then reconnect your heater hoses as they were and enjoy the heat.
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Bryan
Dodge Dakota
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12/09/2003
10:44:21
| RE: Heat not working well?!?
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Thanks for the help guys, I will try that this weekend!
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Joe
Dodge Dakota
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12/10/2003
07:57:24
| RE: Heat not working well?!?
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Yeah, flush the heater core. I have a 92 that did the same thing. Takes a few minutes and works wonders
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Bryan
Dodge Dakota
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12/15/2003
14:37:02
| RE: Heat not working well?!?
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Backflushed the heater core and now I've got HEAT
glorious HEAT!
Thanks for all the help!
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Jason1236
Dodge Dakota
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12/08/2005
23:37:16
| RE: Heat not working well?!?
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I have a quick question about this, I have the same problem no heat, I also have another problem, the same time I have no heat my 88 Dakota is just about to overheat, it never does but it gets really close. I flushed my radiator with radiator flush and changed the coolant. The weird thing is the heat works fine if I let the truck warm up about 15 min before I drive anywhere. Another thing I rebuilt the engine about 12,000 miles ago, in the summer of 2004. Any suggestions.
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Josh
Dodge Dakota
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12/11/2005
14:07:14
| RE: Heat not working well?!?
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Jason, check out your thermostat. It sounds like stuck itself closed. If its not your t-stat, then its your water pump.
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WyomingPurple
Dodge Dakota
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12/12/2005
12:24:47
| RE: Heat not working well?!?
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Another heater core backflush success here. I had lukewarm air coming out before. After the backflush it's hot hot hot coming out the ducts.
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Rich
Dodge Dakota
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12/17/2005
10:00:18
| RE: Heat not working well?!?
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I just purchasded a 3.9l 1997 Dakota with 130,000 miles and the heater hardly worked. I just did the proceedure described above yesterday, and we now have heat and defrost!! Took only about 20 minutes in total time!!
I would now like to flush the whole radiator/engine, as a fair amount of guck came out of the heater. I cannot seem to get the radiator to drain and wanted to avoid taking off the lower hose. I found a hand screw on the oposite side of the lower hose that rotates 90 degrees and has a little hose on it. I assume this is it, but when I turn it, nothing comes out. I am afraid to force anything for fear of breaking it. How do others drain the radiator?
Thank you for your help!
Rich
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Josh
Dodge Dakota
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12/18/2005
10:39:59
| RE: Heat not working well?!?
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Rich, your best bet is to slowly disconnect the return hose at the bottom. It sounds like the drain valve is plugged up. Or you can try to open the valve and pressurize the system through the fill cap on top(be sure to take off the cap). If you have any more questions, ask away.
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98_dakotaspor
Dodge Dakota
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12/20/2005
15:16:47
| RE: Heat not working well?!?
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rich,
when you turn the drain-cock valve to drain the radiator you also have to pull the valve outwards while turning. thats what i have to do on my 98 dak.
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daffydak
GenIII
12/22/2005
00:39:59
| RE: Heat not working well?!?
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I also have to pull out and turn at the same time when I'm draining my radiator on my 00...
Dan
MOPAR=More Power!!
00 CC Sport Plus 4.7L 4X4 Auto, 3:55 LSD
Straight dual catack exhaust, adjusted tps to .76V, ported TB, home brew intake setup w/K&N filter, Superchips 3715 Tuner, 180* T-stat... more mods to come!!!
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GB2000
GenIII
12/22/2005
01:12:01
| RE: Heat not working well?!?
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Those drain cocks are a PIA... also very notorious for not working after a few years of never being touched. I just take some tubing and siphon the coolant out of the damn thing...sure it's dangerous if you don't pay attention to where the coolant is, but if you got a long enough length of tubing, you can do it with little risk (as long as you use a little common sense). Much easier than fiddling with a stubborn drain cock.
Josh Blackshire - Founder, OhioDakotas.NET
Red 98 Dakota Sport - Check it out!
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rich
Dodge Dakota
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12/25/2005
19:10:21
| RE: Heat not working well?!?
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I was afraid to try and pull it out too hard with out knowledge of knowing it that was the way it was supposed to go. Next time I will give it more of a tug. This time, I just took it to a shop that specializes in radiators and had them flush it. I supplied the antifreeze and the distilled water and they charged $30.
Also, had both diffs, the trans and the transfer case oils changed at a locally owned transmission shop. They charged $150.
Rich
1997 4x4 SLR Dakota
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