Re: leaking coolant
 

97tjMike wrote:
> On Sep 17, 8:34 pm, Mike Romain <roma...@sympatico.ca> wrote:
>> 97tjMike wrote:
>>> On Sep 17, 11:20 am, Mike Romain <roma...@sympatico.ca> wrote:
>>>> 97tjMike wrote:
>>>>> I replaced the evaporator core on a 2001 XJ this past weekend. The
>>>>> heater hoses were old and they had to be cut off, so we did that and
>>>>> replaced them with new ones. Everything went smoothly, and we
>>>>> reassembled everything and started the car. Coolant started leaking
>>>>> everywhere! Not at first, but only after the pressure builds up and
>>>>> you rev the engine a few times. We are almost positive its leaking
>>>>> where the rubber hose meets the heater core's copper pipes. We tried
>>>>> multiple hoses and clamps, but the leak still occurs. Coolant will
>>>>> pour out of the drain tube in the HVAC, we assume this is because the
>>>>> spraying coolant sprays thru the foam in the firewall and into the
>>>>> unit. I dont know where else to turn or go, but you can't drive for
>>>>> more than a minute before coolant goes everywhere. HELP!
>>>> You are describing a defective core.
>>>> I would put duct tape on the hole on the firewall just leaving the brass
>>>> tub clear to stop coolant going from the hose to the insides to see if
>>>> the leak stays outside the firewall. I suspect the leak is inside.
>>>> Mike
>>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>>>> Canadian Off Road Trips Photos: Non members can still view!
>>>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>>>> (More Off Road album links at bottom of the view page)
>>> well i replaced the EVAPORATOR CORE, not heater. the heater core just
>>> had to be removed and reinstalled. Still starting to agree with the
>>> diagnosis though.
>> I was thinking when the old hose was cut off it was twisted and pulled
>> on first which can crack a weak core joint or split the pipe.
>>
>> I worded it strange though.
>>
>> Mike
>
> yea thiats what I'm thinking. Some guy at work offered to re-weld it
> for me (if possible), so I'm gonna rip it out.
>

It's very possible! 'If' it's not a case of rot.

If I was going to rip off my dash to pull out the heater core, I would
replace it rather than fix it.

I literally broke my rad in half twice and have soldered up many of it's
cores with some cut off and blocked even because they were just too
stretched to fix. I also welded two 1"x1/8" metal bars up the sides to
reinforce the snapped in half side straps. (my lower tank was just
hanging on the cores..)

I first broke it about 4 years ago and have nursed it along until a
couple weeks back when I took it in for a re-core rather than solder up
3 more leaks for another bush camping run. They even left my heavy duty
side strap braces on when they did the re-core, laughing about it never
breaking again. LOL!

First time in 'years' I haven't had to do a rad fix on a run...

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)