Poor heater temp

ekdave1962 · Post by **ekdave1962** » Wed Jul 15, 2009 7:45 pm

hi guys my little heater is not putting out much warmth .. near to zero some advice would be great ..

I have flushed heater and flow seems to be fine, check block fitting and there is water there .. but hoses in and out are luke warm ?

im thinking maybe i have them conected wrong ?
my 186 also runs heater manifold so theres lots of plumbing curently i have heater inlet ( i think )coming off water pump and return going to the thermoste housing ..

Whilst when i rev the motor i can see movement in radiator could could rhe water pump be low in out put ?

Thanks Dave

reddo · Post by **reddo** » Wed Jul 15, 2009 7:59 pm

Hiya EKdave..
I am betting ya havent got a thermostat in there.
The reason the heater isnt getting hot is because the radiator is doing its job....

.. and that is why ya can see the water moving around past the filler neck after start up.

Whip the two 9/16" bolts out of the thermo housing and see if theres a thermostat living in there.

If there isnt.. then fit one.
It'll hold the water back in the block and help things get nice and warm in the block... well at least 160 degrees........ and in return the air coming through the heater should be warmer.

Reddo

FB MAD · Post by **FB MAD** » Wed Jul 15, 2009 8:40 pm

Ditto to Reddo's comments above

Most heater low temp probs can be traced back to a faulty or non existant thermostat.

Always use a thermostat in a car, they were put there for a reason by car manufacturers.

They still use them today for the same reason.

ekdave1962 · Post by **ekdave1962** » Wed Jul 15, 2009 8:59 pm

Thanks guys im sure there is one there but ill check it out friday ..

Trev · Post by **Trev** » Thu Jul 16, 2009 4:11 am

Other than that, how is she going?

, Trev

.

reddo · Post by **reddo** » Thu Jul 16, 2009 7:39 pm

Hey Dave..
Just re-read your message.
Ya didnt state whether you have a heater withj a fan attached.. smiths, nasco or whatever .. or...
the poverty pack heater.

If ya have the second one. I.e: just a heater core strapped up under the dash with a hose in and out you wont get much warmth out of it while parked.
They rely on air blowing through them via the vent to push the heat down from behind the dash towards your feet.

Reddo

Trev · Post by **Trev** » Sat Jul 18, 2009 8:24 am

SunnyTim wrote:move to Queensland. Heater works well here for the 5 days in the year its needed

But you would have to have it standard height to get through all the floods

, Trev

.

dave68 · Post by **dave68** » Sat Jul 18, 2009 9:01 am

GGGGGGGRRRRRRRHHHHH Tim!

ekdave1962 · Post by **ekdave1962** » Sat Jul 18, 2009 9:39 am

ah thanks Guys

just checked and there sure is a thermostate just checking it now to see if it opens ..

here a pic of the heater its one of those barrel ones with a Fan

now QLD would be sweet but then id need aircon

Trev she coming along slowly on club plates atm until engineer stuff sorted but if they bring in the 90 day log book for club permits it may stay on them .
will be at the bendigo all holden day next month just for a look see ..

Trev · Post by **Trev** » Sat Jul 18, 2009 11:51 am

I have exactly the same heater in my ek and it works a treat

, Trev

.

ekdave1962 · Post by **ekdave1962** » Sat Jul 18, 2009 4:35 pm

well not this one sadly trev is not the heater it the water curculation ..

just checked thermastat it works fine , ran motor for 30 mins and removed hose to heater and manifold and stuff all water flow no blockages, replaced rad cap just in case it was a presurr isssue .. stll no flow to these hoses ..

it seem it can only be the water pump ?

i have a vk 202 water pump they look the same so maybe i will try change it tomorrow and see ...

Post by **Blacky** » Sat Jul 18, 2009 10:36 pm

This may sound stupid , but has someone fitted a new thermostat housing and put the hose on without drilling the guts out of where the hose goes on ???????

ekdave1962 · Post by **ekdave1962** » Sun Jul 19, 2009 7:23 am

lol no not stupid blacky i checked that 1 st up removed hoses the make sure they was water coming out from those points .. im not sure what the flow movement is around the block and wondered if i had 2 pressure pushing from both directions, but removed hoses from manifold whilst running and no flow just a intial dripped of a few mills, i realy expected a good flow out of the hose ?

Trev · Post by **Trev** » Sun Jul 19, 2009 8:02 am

I was going to suggest that too Blacky

, regarding the flow to the inlet manifold I once filled my car with the green coolant before a long Nationals trip, on the trip it overheated and I topped it up with water, jump forward about 2 years and when I swapped the twin carb manifold to the single, there was still green coolant in the manifold from at least 3 years back, so what does this say about the flow of these things

, Trev

.

ekdave1962 · Post by **ekdave1962** » Sun Jul 19, 2009 9:30 am

ah has me stuffed .. i can get a flow out the heater in let line but it doesnt make it back out .. have conected a hose to the inlet and disconnected the out let and get a full flow, i can only guess the pumps are not really desinged to pump water all over the place , im thinking of disconnect the manifold jacket to see is that aid curculation .. have not changed out the water pump at this stage , cant be stuffed ..

look like the only answer is fit air con and move to sunny QLD

hmm maybe a little in line electric pump will get it moving .. lol