Heater Core
Senior Member
Joined: Nov 2011
Posts: 667
Likes: 1
From: shelley, idaho
Year: 1988
Model: Cherokee
Engine: 242CID I-6
Is there a video for this? I am so curious why this is such a nightmare. Most people on forums say nightmare jobs are a piece of cake, so this must truly be a week-long nightmare for a beginner type.
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Senior Member
Joined: Sep 2012
Posts: 509
Likes: 0
From: Largo, FL
Year: 1995
Model: Cherokee
Engine: 4.0 HO
It actually isnt all that bad. I had the job done in 7 hours and that includes stopping for lunch and 2 trips to the parts store. I am by no means a mechanic. I ended up replacing the heater core, blower motor, blower resistor and added the 2 hoses for the heater core. But, mine's a '95, so it was a matter of getting the center console out, the dash lose on the passenger side, then removing the blower motor, then dropping the evap box and then the heater core practically fell out. Lots of luck.
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
I put a little $2 tube or alumaseal in my coolant years ago. All's well. I just had smell and fogging, no drip. It worked fine in a couple others as well. The small tube, Alumiseal brand. Nothing else, (like gummy bars leak)
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
I'm just talking specifically about the Alumiseal brand powder, (small tube, not the bottle), for a pinhole leak. You can even start with 1/2 a tube, just a few tablespoons, and run a few days and see. Too much can settle in places with low flow, bad news.
And yea! Years ago I'd put pepper in my old ******* any day I was giong out to cut firewood. (worked).
I wouldn't use the other stuff unless maybe in an emergency to get home.
Last year A pair of brothers said they both had success with the "newer" carbon fiber "treatment" for their 0331's $60 process. No comment!
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