FJ62 rear heater doesn’t get warm (1 Viewer)

[icemann8317]

Hi Everyone,
Has anyone had their rear heater stop getting warm?
Fan works and front gets warm but the rear doesn’t no matter the level of heat on the switch.

Thanks in advance!

Will

 

[sved]

Maybe change username ??

 

[icemann8317]

Maybe change username ??

Lol. Well played.

 

[sved]

Now back to serious,
Is the piping towards the heater under the truck getting some heat ?

 

[3_puppies]

there is a lever to turn the heat/coolant flow on, is it on? it is located on the rear of the console
is the plumbing actually hooked up for the rear heater?

 

[icemann8317]

Now back to serious,
Is the piping towards the heater under the truck getting some heat ?

Now back to serious,
Is the piping towards the heater under the truck getting some heat ?

I felt cool to the touch but lemme shoot both pipes with the laser thermometer.

 

[duncanrm]

Its really common for the rear heaters to fill up with mud/muck/silt. If the piping is still in place (delete not done) then its very likely this is the issue. Remove hoses and flush with a garden hose.

 

[John McVicker]

My first guess is with @3_puppies

 

[4runner2FJ60]

Heat up front has to be on also, but I am sure you know that.

 

[Spike Strip]

Cripes, it's Lost Angeles, just tell your passengers to put on a sweater. If you give in now, next they'll want rear A/C

 

[3_puppies]

I felt cool to the touch but lemme shoot both pipes with the laser thermometer.

if there is no flow the pipes won't be warm

 

[Ernboto]

I went through this, PO used a lot of Bar’s leak seal in the cooling system and it clogged the rear heater lines as they are the lowest points of the system and are a perfect place for muck to settle. I had to remove them and jam the clog free. Hopefully your can simply be flushed clean.

 

[OSS]

1. Engine coolant never was changed on schedule
2. Rear heater was never used (for decades)
3. Rear heater’s thin coolant passageways corroded up so coolant can no longer flow through it
5. Rear heater now no workie

 

[3_puppies]

1. Engine coolant never was changed on schedule
2. Rear heater was never used (for decades)
3. Rear heater’s thin coolant passageways corroded up so coolant can no longer flow through it
5. Rear heater now no workie

you forgot 1

there was a leak and the PO bypassed the entire rear heater

 

[icemann8317]

Thanks everyone, this gives me some things to look at.