I recently installed a new 2 core all metal radiator along with the recommended 195 degree thermostat. My problem is it isnt warming the interior of the vehicle enough to be comfortable especially when it is cold out in other words it just blows slightly warmed air. The blower motor works fine on all settings. This on a 3.9 litre 1993 dodge dakota.
2007-01-14 03:54:29 · 8 answers · asked by James Dodge Boy 3 in Cars & Transportation ➔ Maintenance & Repairs
Coolant level is at the recommended level.
2007-01-14 03:56:19 · update #1
195 degree is the recommended thermostat.
2007-01-14 04:07:10 · update #2
I installed a new radiator not a heater core old radiator was non repairable.
2007-01-14 04:09:51 · update #3
You need to get the motor up to temp and then open the hood and check your heater hose. make sure they are both the same temp. If the one going in is hotter than the one coming out you probably have a blocked heater core or your valve is not opening correctly. The heater is controlled by a valve that gets stuck shut.won't allow enough flow thru the heater core. That is more than likely what the problem is. If the valve is opening all the way and you still have cooler water coming out then it would be the heater core.
2007-01-14 04:04:35 · answer #1 · answered by Anonymous · 0⤊ 1⤋
There is a cable that runs from the interior heater switch to one of the two heater hoses on the right side of the engine toward the firewall. The two hoses actually go inside the firewall to the heater core. ( two black hoses that look like a garden hose)
This cable opens and closes the valve on the heater hose that allows hot water to enter the heater core. Sometimes they come off the valve where it hooks into the hose. Sometimes the cable breaks and sometimes they get rusted up and the cable kinks.
Check it out. You might have to take it apart, loosen up the cable with a few drops of oil and It wouldn't hurt to oil the valve to make sure everything is moving smoothly. If you can't fix it right now then just locate the valve where it hooks into the heater hose and use a pair of pliers to turn the valve on. You may have to take the cable off the valve to get it to stay open. That should take care of it for you.
The more you open the valve the more heated water gets into the heater core, so you might want to open in only about half way or 3/4. Usually it's the valve that goes bad which causes the cable to come off or kink. You can get a new valve at any auto parts store for under $10 Good luck.
2007-01-14 04:06:08 · answer #2 · answered by Dumb Dave 4 · 0⤊ 0⤋
First check the heater control valve on the heater hoses. Secondly, ask yourself did it heat good before? If so, what have you changed? Radiator....thermostat- - thermostat that keeps the coolant in the engine until it is up to temperature(195) before the thermostat opens to let some out to be cooled while at the other end of the engine coolant from the rad is let in, circulating around in the engine replacing the hot coolant with cooler stuff. When the thermostat gets cooler it automatically closes and waits until it is hotter in the engine to reopen again.
That's how it works.
So your new thermostat may be faulty.....Or it may be in backwards??
2007-01-14 04:10:36 · answer #3 · answered by ButwhatdoIno? 6 · 0⤊ 1⤋
Is the 195F the proper thermostat? If you are supposed to have a hotter one, that would not only effect your heater, but your performance and economy, as your engine won't be operating at the proper temperature.
If your thermostat is the correct one, you may have a problem under the dash. Is the heater valve opening all the way? Is there a door in the vent system that switches from a/c to heat to defrost? This may not be operating properly.
Go to the parts store and buy a Chilton's or Haynes manual for your pickup. They are only about $10, and will not only walk you through the above repairs, but will give you additional troubleshooting ideas. They will also help you in repairing the next thing that goes wrong on your Dakota.
2007-01-14 04:02:21 · answer #4 · answered by J.R. 6 · 0⤊ 2⤋
I would bet on the valve on the heater hose that controls coolant flow. Also check if the heater is blowing enough air. Just hearing it run doesen't mean it is putting out. Could be an air door not opening in the duct.
2007-01-14 05:44:54 · answer #5 · answered by tronary 7 · 0⤊ 0⤋
Your heater core is probably plugged.disconnect both hoses leading to it,empty out radiator fluid.Put a garden hose on one of the hoses for awhile and then the other for awhile.If you get good flow through both of them then the heater core isn't your problem.In doing this you may flush out trapped particles so hook the hoses back up and fill up the fluid.Don't forget to burp the system.You do that by filling it up and letting the system get hot and push out the air pockets.Also put a new radiator cap with the proper pounds of pressure which is indicated on the cap.If all this fails then you need to find the door under the dash that switches from the cold from hot to see if it is stuck.A good indicater of this is that your control from hot to cold will be harder to move than usual.195 degree thermostat is just fine.good luck.
2007-01-14 04:02:38 · answer #6 · answered by JACK OF TRADES 3 · 1⤊ 2⤋
Heater switch under the hood probably has junk in it. Take it off and clean it,with carb spray.Should have a hose going in,and out.
2007-01-14 04:03:10 · answer #7 · answered by Anonymous · 0⤊ 1⤋
you installed heater core or radiator...
2007-01-14 04:05:53 · answer #8 · answered by gotspeed7883 3 · 0⤊ 1⤋