Rear Heater - FJ62

[Front Range 4x4]

Would removing the console rear heater hoses and all push more heat to the primary heater? I'm guessing not but if it does I'll pull the hoses.

 

[RockDoc]

Just shut off the valve at the rear heater, then very little coolant goes through it. Mine was by-passed when I got the truck, but that was due to rusted out lines and a crack at the heater core.

 

[Front Range 4x4]

Now that I think about it that's what i did when I installed the console.

 

[Michael Hanson]

The front heater should burn you up.With both on in below freezing I cant stand them both on. Mike

 

[Front Range 4x4]

Below 0 temps today and I was toasty.

 

[tonyota]

My rear heat won't blow hot. But front gets the rig so toasty warm I gotta turn it way down. These things heat great.

 

[Rigger]

My rear heat won't blow hot. But front gets the rig so toasty warm I gotta turn it way down. These things heat great.

Man, I wish I could say that about my wagon!!

 

[Spook50]

The front heater should burn you up.With both on in below freezing I cant stand them both on. Mike

That's the case with mine. Problem is that during sub-zero nights like the last two here, if I have it set to outside air it just doesn't have much of a chance to get warm when it passes over the heater core in the front.

Thank God for that rear heater.

 

[nathanbsmith]

1988 FJ62.

My rear heater still blows air but recently stopped blowing hot air. Any suggestions on how to troubleshoot?

 

[OSS]

1988 FJ62.

My rear heater still blows air but recently stopped blowing hot air. Any suggestions on how to troubleshoot?

The heater core is probably all corroded up inside- so hot coolant can’t flow through it. No fix.

 

[Spook50]

The heater core is probably all corroded up inside- so hot coolant can’t flow through it. No fix.

Depending on the cause of the clog. If it's legit corrosion then you called it. No fix.

If it's scale buildup, a vinegar flush with it removed from the vehicle could clear it out, but I sure wouldn't reinstall it before doing a pressure check to make sure the buildup wasn't preventing it from leaking.