Heater Question??

[the gimpey one]

I hooked my heater hoses back up the way it suppose to go. I let the cruiser run for a couple minutes and no leak??? So do i have to wait for the thermostat to open up so it can go to the core? If so should i remove it then run the rig and immediately see the leak? It never leaked inside the rig but the hoses under it are solid metal.

 

[BELMONT148]

Your coolant lines are under pressure when the water pump is turning.

Is it not your bypass hoses that are leaking maybe when you run the heater? I would open up the heater, run the truck in the lot for a while and spend about an hour looking over everything. Tighten up every hose clamp just in case.

Jeremy

 

[BELMONT148]

After reading your post at the Wilds, it sounds like your brass hoses running under the truck to the rear heater core are shot. Either replace them completely, or if you don't need the rear heater you can plug the port coming out of the head and you won't have to worry about coolant going back there. We don't see sub zero temps so the rear heater is probably useless around here.

Jeremy

 

[BELMONT148]

I think this is the fitting that has a hose running to the firewall behind the carb that is the start of the whole rear heater hose assembly. You should be able to remove the angled fitting and plug it with something to solve the leak.

 

[BELMONT148]

Remove the fitting and plug with a 3/8" NPT pipe cap with some pipe dope.

Then go the passenger side and remove the hose and pieces that I have circled. Get a new piece of hose and clamps and run one long hose from the pipe on the side of the block directly to the lower firewall fitting like in the third pic.

Jeremy

 

[the gimpey one]

so when i run the new hose from the block to the firewall it does away with the rear htr completely? Do i need to patch the pipes i did away with where the T connected? Oh yeah and thank you guys.

 

[BELMONT148]

No need to plug the hoses from the engine bay to the rear. You will have disconnected the flow completely. Nothing going in, nothing coming out. You could crawl underneath and unbolt them to clean up stuff that is no longer needed. I had countless hoses, and tubes that went to nowhere when I inherited my 40. I have removed most of them by now.

Jeremy

 

[the gimpey one]

Drove to ralph hayes toyota today in the dent. Ran great. I picked up new circuit breakers for the heater($44 after discount!!) and now heater blower works. Now i gotta look at my thermostat. Doesn,t it suppose to take 2 seals? One under and one over the tstat??

 

[the gimpey one]

well i replaced the seal and gasket in my thermostat housing and it still didn't warm up. Getting aggrevated. Really wanted it working for parkway cruise but i guess as long as i do not need defrost/fog i will be ok.

 

[the gimpey one]

ok so i replaced the gasket and oring for my tstat. Still nothing. Warmer than outside air but not heat. Whats next look at the core??

 

[mdennis]

maybe take a water hose and try to back flush the heater core , disconnect the hoses and force the hose to push water thru the core

 

[the gimpey one]

on my way back home from mt. mitchell i ran it and it was definitely warmer than the outside air. I never got cold but it wasn't exactly that cold either. Sooner or later i will take the dash off and go from there.

 

[the gimpey one]

just got off of spector off road website. I think my tstat is in upside down?? We will see tommorow.

 

[BELMONT148]

I didn't think it would fit upside down. I thought the clearance in the bottom housing was less than the top and the thermo wouldn't fit. Either way, definitely worth checking.

 

[jleeFJ62]

Is the Tstat new? If so you can check it with boiling water to see if it opens. If its not new, i'd replace it, they are not very much new from toyota.

also, get a infrared temp gun to check the true temp. My truck says i run hot at idle (sits at the second line or right below it on the guage), but when i checked it it was 179 degrees at the rad and 174.5 at the tstat housing.

 

[the gimpey one]

I put the thermostat on the other side that i thought was the top??? I put the seal on the flat part on the bottom of this picture someone put on mud.

 

[the gimpey one]

so is that tstat i the pic upright or is that the bottom sticking up??

 

[Trollhole]

That's the top. From the looks of it it is broken. Get another one.

 

[the gimpey one]

I think i finally have it fixed. The tstat was upside down. Lost the rubber seal i had to order so i went to the hardware store and bought a tube of gasket maker. The gauge has never went that high with me before. That was after a trip around the block and idle for around 10 minutes. My new question is what does that round button under the fan symbol do???

 

[the gimpey one]

I am talking about the button beside the fan speed switch.