Heater not blowing hot enough, need some hints.
#1
Heater not blowing hot enough, need some hints.
I was told to check the air bypass valve but can't find it. I was also told to check the coils under my dash but I don't know if that will be easy lol. This is on a 2k dakota 3.9. My radiator and thermostat have been replaced in the 2 months so I don't think its a coolant issue.
#2
#4
Having same heating issue.
I've been having the same problem so I took it in yesterday to have the cooling system pressure flushed. They advised me to diagnose it before wasting my money. They told me that both heater core hoses were the same temperature but, that my upper radiator hose was 153F and the lower was only 81F. They were able to detect that the thermostat was working so their diagnosis was the water pump. They wanted too much to change it so I went to NAPA and picked up a new pump, hoses, and thermostat for $150.
The problem is that when I got home tonight to start on it, I took a closer look at the pump from under the truck and see where coolant has started to seep from where the timing chain cover and the block meet. I would suggest that you take a look at this area first...I now have to go and get the gaskets to do this fix. Not looking forward to this!
The problem is that when I got home tonight to start on it, I took a closer look at the pump from under the truck and see where coolant has started to seep from where the timing chain cover and the block meet. I would suggest that you take a look at this area first...I now have to go and get the gaskets to do this fix. Not looking forward to this!
#5
All the above is good stuff. I'd check the waterpump as mentioned by looking for a leak and listen for the tell tale noises they make when going. The heater cores do have a tendancy to plug up over time so if no leaks are detected and there is no noticable loss of coolant noted, I'd flush it. The gunk may be restricting the heat exchange capablities of the core or even blocking the flow completly. Hopefully its just plugged up as the flush is cheapest of the lot. There are even do it yourself kits available, if your able to change your oil you should be able to handle the coolant flush and change.
#6
The problem is that when I got home tonight to start on it, I took a closer look at the pump from under the truck and see where coolant has started to seep from where the timing chain cover and the block meet. I would suggest that you take a look at this area first...I now have to go and get the gaskets to do this fix. Not looking forward to this!
I'm not sure if there is supposed to be coolant inside the timing chain cover....
I'd be willing to bet the coolant your seeing there is leaking out of the bottom of the water pump and blowing back on the block and timing chain cover and dripping down....the only gasket you'll need is the water pump and that may just be the correct permatek sealant if I remember right.
The fun part was getting the fan off the front of the water pump....
#7
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#8
I'm not sure if there is supposed to be coolant inside the timing chain cover....
I'd be willing to bet the coolant your seeing there is leaking out of the bottom of the water pump and blowing back on the block and timing chain cover and dripping down....the only gasket you'll need is the water pump and that may just be the correct permatek sealant if I remember right.
The fun part was getting the fan off the front of the water pump....
I'd be willing to bet the coolant your seeing there is leaking out of the bottom of the water pump and blowing back on the block and timing chain cover and dripping down....the only gasket you'll need is the water pump and that may just be the correct permatek sealant if I remember right.
The fun part was getting the fan off the front of the water pump....
Also, since you brought it up...LOL...getting the fan off. Any tips to make this easier??
Thanks!
#10