2004 corolla no heat

[262markm]

first off im new to this forum
heres what i have.
2004 corolla 1zzfe
the timing chain tenionser failed so i had to replace all of the timing compoents also i had to replace 8 vavles and had the head cleaned up
i have the car back together and it runs good now. my problem is i dont have heat the cooling system is cycling fine according to my scanner the temp does go over 230 and one the temp on the dash it is in the middle
what ive done so far is ive replaced the thermostat and ive flushed the heater core
no this is rather werid the upper rad hose is warm, the lower hose is cold,both heater hoses are cool and there is no temp difference between the too
now i smelled the exhaust and it doesnt smell sweet or anything so im pretty sure the head gasket it in tack
any thoughts on what else could be the culprit?
i was leaning towards maybe replacing the water pump?

[invader]

Check your reservoir coolant level with engine cooled off, and also make sure it's full at the pressure cap. If it was low, add coolant as required and check level again after riding up to nomal operating temperature with heat on, and a complete cool down.

[invader]

What mileage did your timing chain tensioner fail at, and why?

[Dave's]

With the engine cold you could remove the actual radiator cap and start the engine. Within 15-20 minutes max you should see the coolant moving in the top of the radiator as the t-stat opens and the pump begins circulating it.

[262markm]

Originally Posted by invader

What mileage did your timing chain tensioner fail at, and why?

137k i bought the car this way to make a quick buck

all the teeth on the crank sprocket were wore off completely
also the vvt sprocket was wore too
i replaced all of the sprockets so if that was the culprit its fixed

[262markm]

does the coolant system flow backwards than a traditonal cooling system (im a domestic guy) you would think the t-stat would be at the higher point not the lower

[mikered30]

If the temp gauge is in the middle, it should be no where 230 degrees. T stat opens at 180, electric fan kicks on around 203. Boiling protection of the coolant is 265. Are you sure all of the air is out of the system? Did you use and OEM t stat and was it installed correctly?

[262markm]

Originally Posted by mikered30

If the temp gauge is in the middle, it should be no where 230 degrees. T stat opens at 180, electric fan kicks on around 203. Boiling protection of the coolant is 265. Are you sure all of the air is out of the system? Did you use and OEM t stat and was it installed correctly?

i ran the car for about 20min you would thing that woud be suffeicent time to bleed the air out

also the t-stat is a 180degree fail safe, is there a wrong way to install these honest question? i just put the new gasket on it and put it in

[mikered30]

The thermostat must be installed with the jiggle valve upward (12 o clock). The jiggle valve allows trapped air to escape when the cooling system is drained.

[262markm]

Originally Posted by mikered30

The thermostat must be installed with the jiggle valve upward (12 o clock). The jiggle valve allows trapped air to escape when the cooling system is drained.

i bet you thats the culprit to my problem!!
i will try that 1st and see what happens

[mikered30]

Just to add, if you didnt get an OEM (Kuzeh) I would go and buy one, better not cheap on that part.