replacing heater core in 90 4runner

[semlin]

well a heater backflush and a new t-stat and it now is at about 80% heat which is an improvement but also a disappointment :angry: . the rear heater now works great and some rusty flakes came out when flushing the front core.

has anyone done a heater core change? how much of a pain is it?

 

[KLF]

Take the engine out. Sawzall a hole in the firewall. Remove the heater box. It's easier that way.

Sell the truck.

You're gonna hate this project.

 

[semlin]

thanks . just bought the truck. 80% heat is sounding better.

 

[Texx]

I've just done an 85 and an 86...not much love for ya. Once you do the first one, the second ones easier, relatively. 7-8 hours for the first one, 4 or so for the second. Biggest pain is working with all the cable controls. That, and removing 90 per cent of your dash from the truck. Oh, and not discharging the a/c.