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chris
Dodge Dakota
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2/16/2005
19:33:24
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 Subject: help me please!!!
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Message:
alright im working on my buddys 94 dak V6. he wasnt getting any heat. it would blow but not hot or warm for that matter. so i started the easiest route. i flushed his coolant system and replaced the thermostat (180 degree one) i filled it back up with coolant and all that good stuff. but it still wont blow hot. and the truck really doesnt even get up to temp now. what the hell is going on here? could it be the heater core. or even an air bubble in the radiator? any help would be appreciated.
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dak
Dodge Dakota
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2/16/2005
22:37:50
| RE: help me please!!!
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i'm guessing heater core. double check it though.
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slugkota
Dodge Dakota
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2/17/2005
00:13:29
| RE: help me please!!!
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I'd reccomend replacing the heater core first because they're so cheap (18 bucks for a core on a ford ranger I know) but the problem sounds like it also may be with a sensor if the truck isn't getting up to temp. I'm guessing it's not throwing any codes?
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93dak4x4
Dodge Dakota
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2/17/2005
08:14:19
| RE: help me please!!!
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Message:
the truck should get up to temp regardless of a plugged heater core or a bad sensor...hell, a plugged heater core would make it warm up faster.
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Tom In PA.
Dodge Dakota
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2/17/2005
21:55:59
|  RE: help me please!!!
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Message:
Try Reversing The Heater Hoses. Had The Same Problem On My 96 Now When It Is 20 Degrees Out I Have To Turn The Temp Down To Be Comfy
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93dak4x4
Dodge Dakota
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2/18/2005
10:24:59
| RE: help me please!!!
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if that worked for you i suggest you do a coolant flush, because you probably have all kinds of crap floatin around in there....
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chris
Dodge Dakota
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2/18/2005
21:24:12
| RE: help me please!!!
IP: Logged
Message:
i just did the coolant flush when i replaced the thermostat.
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GB2000
GenIII
2/18/2005
21:40:02
| RE: help me please!!!
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Reverse flush
Lemme see if I can find the info on it...
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GB2000
GenIII
2/18/2005
21:42:02
| RE: help me please!!!
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Here ya go...
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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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chris
Dodge Dakota
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2/18/2005
23:15:43
| RE: help me please!!!
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Message:
thanks for the info but that still doesnt explain why the truck doesnt get warm. if its a sensor what sensor could that be. temp sensor maybe?
thanks again guys
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daddio
Dodge Dakota
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2/19/2005
13:57:18
| RE: help me please!!!
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Message:
chris, did you check the new t/stat before you installed it? if it's an el cheapo A/Z 180 like i had in my truck, it is probably opening @ about 170-175. i threw that hunk of junk out and went back to a 195. with the 180, i kept getting a P1284 code. engine too cold for too long. gas mileage sucked, it pinged worse than with the 195.
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chris
Dodge Dakota
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2/19/2005
18:26:23
| RE: help me please!!!
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so i should put in a 190 instead of the 180 i put in it.
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93dak4x4
Dodge Dakota
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2/19/2005
18:39:46
| RE: help me please!!!
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if you are having issues getting up to operating temp then yes, but put in the 195. this should take care of the problem. if that doesnt solve the issue then your coolant temp sensor is wrong because there is no other way the motor isnt getting warm...laws of thermodynamics say that one.
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chris
Dodge Dakota
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2/19/2005
19:23:18
| RE: help me please!!!
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thanks for your help guys. ill let ya'll know what happens.
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gloomygoblin
Dodge Dakota
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2/19/2005
21:18:55
| RE: help me please!!!
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Message:
Was that thermistat possably a fail safe model? I know the failsafes will stick in the open position if they get 2 hot.. Might want 2 pull it and have a look, You probably know if its stuck open your not going 2 have alot of warming up happening.
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