Removing/replacing heater box...86 B2

[rusty ol ranger]

Non AC.

Is it possible to remove and replace this without pulling the whole dash down to the firewall?

 

[Curious Hound]

Not if it's anything like a 3rd gen. It's difficult to find all the fasteners, get wiring harness unclipped, get you hands where they need to be, etc. But, maybe 2nd gen is easier.

 

[mr_manny]

My 90 heater box took 30mins to replace.
I don't know why Ford couldn't figure out a way to incorporate "the ease of maintenance aspect" into future interior upgrades/changes.

Lot's of posts here on TRS, on replacing heater cores.
You will be amazed how easy it is.

 

[rusty ol ranger]

My 90 heater box took 30mins to replace.
I don't know why Ford couldn't figure out a way to incorporate "the ease of maintenance aspect" into future interior upgrades/changes.

Lot's of posts here on TRS, on replacing heater cores.
You will be amazed how easy it is.

Not the heater core....thats a 20min job lol.

Im talking the whole heater box.

 

[mr_manny]

Sorry, my mistake.
I've never pulled the entire heater box.

 

[scotts90ranger]

You talking the fan housing under the hood or the part under the dash? The under hood part is easy as long as you can get to all the bolts, I've done 2 or 3 on my '90 (and need to fix it again, dang turbo outlet is "right there", I have more experience rednecking now so it should be better next time...)

I've never done anything under the dash...

 

[rusty ol ranger]

You talking the fan housing under the hood or the part under the dash? The under hood part is easy as long as you can get to all the bolts, I've done 2 or 3 on my '90 (and need to fix it again, dang turbo outlet is "right there", I have more experience rednecking now so it should be better next time...)

I've never done anything under the dash...

no not that part....im talking the whole thing under the dash that houses the blend door, the recirc, etc.

The blend door lever has broken off. I was going to remove it and replace it with the one from rusty #1.

However...if i can somehow get it set to heat im not opposed to just putting shut off valves under the hood for summer. As much as i hate that kinda half assed stuff...i gotta get the thing going cause i miss driving it and if gas keeps climbing my superduty will get real expensive real quick with all the driving i do.

Unless i can make some big breakthru on my vic...the old bronco is looking like the better near term choice

 

[rusty ol ranger]

Well i went out today pulled the blower housing out from under the hood.

Failure mode seems to be the rod that the HVAC slider moves broke off inside of the heater box on the blend door.

So i guess im pulling the dash. I got alot out already....now its just unplugging stuff, pulling the cluster/HVAC control and dropping the column..,alot of work to get at 6 friggin bolts to pull the actual dash.

Oh well..give me an excuse to replace my totally screwed front speakers and the gauge voltage regulator.

Something odd though....i went to fire it up to move it....battery was totally dead. Hooked up cables and it finally cranked enough to fire. As im hooking up the actual charger the fuel pump starts running...key off....wtf. Turn key on pump continues running but primes normally

Ok add that to the list.

While im dicking with the blend door lever the fuel pump randomly starts again....so i just yanked the jumper in the inertia plug.

While im pulling the blower i hear a cackling noise....again...wtf. It was coming from the fuel pump relay. I unplugged it and it was full of water....so im guessing the pumps been running on and off for weeks...hopefully didnt burn it up. Or kill my junkyard battery