Lack of Airflow on heat, but not on cold?

[Slicer89]

Brrrrr fn Brrrr LOL

Does your vehicle have a block heater?

what about the other things mentioned in the manual did any of that help?

No block heater, Even when it was well down into the negatives never had any trouble starting, just getting warm LOL

No manual came with it when we bought it, I downloaded a PDF Version of it and just never got around to reading it. Probably should do that.

 

[sergeimoskva]

Hi !
Additionally, check the following :
if - does your coolant level drops sometimes
if - does temperature gauge goes from hot to cold very fast when engine is running
if - you take radiator cap off and start car does it pushes out air bubbles
... if you have it - then probably been blown head gasket

 

[Slicer89]

The coolant level hasn't ever really changed, There is no oil in it, and there is no coolant in the oil... I believe the head gaskets were already done on it before we bought it.

The temperature does move from hot to cold pretty quickly at times - We took it on a road trip earlier this year when it was 85*F + outside and it stayed between the half mark and first mark on the temp gauge. Never over heated.

 

[EaOutlaw]

Your car has two heater cores, extra coolant hoses that are not on a Van without the rear heater. with all these extra sources for heat exchange and the extreme cold weather you encounter. you should consider using a block heater which is inexpensive

this is just an example not the one I recommend for your vehicle

even the owners manual recommends the use of a block heater in extreme cold weather to lessen the warm up time.

http://www.oreillyauto.com/site/c/d...ap?ck=Search_N0649_-1_4597&pt=N0649&ppt=C0076

If you do not want the heater to run all night set it up on a timer.

you can also insulate all the heater hoses and radiator hoses with plumbing insulation to reduce the effects of the cold weather cooling down the coolant excessively fast.

this type of insulation alone will only do so much but there are others that have a higher r value but are much thicker, the thicker stuff could be used where you have room to install it.

http://www.homedepot.com/p/Armacell...ylene-Pipe-Wrap-Insulation-OEP07838/100539941

like melsg5 said check or replace the thermostat as well if this thermostat is stuck open you will never enjoy the heat you are looking for.

if the cooling system has air in it you will never enjoy the heat you want either.

setting up the rear heater properly will reduce the amount of air flow going to the rear heater. installing a curtain behind the front seats will lessen the load and make it easier to heat the area you occupy if your traveling alone most of the time.

the owners manual has many tips on setting up the rear heater and what areas not to block off which could reduce the effectiveness of the heating system.

you may have a minor problem with some air in the cooling system or a defective t-stat added to a most likely improperly setup rear a/c heat unit robbing you of the air flow you want to the front.

there are many things you can and should do to get what you want, all without blocking off the radiator with cardboard possibly cooking your engine.

I doubt you have a problem with the part you were researching, my thought is if you had a malfunction it should cause a trouble code when the actuator does not respond the way it is designed to.