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Does my 1997 XK8 have a bad heat exchanger

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Old 11-17-2012, 03:52 PM
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Default Does my 1997 XK8 have a bad heat exchanger

Does my 1997 XK8 have a bad heater core??

I got the car started, added coolant/antifreeze and coolant started coming out of what looks like a drain hose on the firewall. Is it going to be tough to change out? I saw that I could possibly have to take out the steering column. Anyone know what it would cost at the dealer?

Thanks, Bruce
 

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Old 11-17-2012, 04:04 PM
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Heater "core" , I meant to say
 
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Old 11-17-2012, 06:27 PM
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definately heater core. if it is just the hose leaking it's not a hard fix. however if the core itself is cracked and leaking, sadly they are NOT fun. buried deep in the dash. DIY it's not overly expensive, just time consuming. Good Luck
 
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Old 11-17-2012, 07:14 PM
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If it was the heater core, the coolant would most likely be leaking out inside the car.

As it's at the firewall, it will probably be one of the two awkward hoses (items 1 and 2) under the manifold.



A lot of dismantling involved to access them so definitely worth replacing BOTH.

Graham
 
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Old 11-18-2012, 05:50 AM
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No water whatsoever on the engine or trailing down either pipe. Definately "All" the coolant coming from the grommet on the firewall. Took out the glovebox to get a birdseye view of where the rubber grommet came from and it was the end of of a hose connected to an aluminum pipe. The grommet was ribbed to make the turn where it attatched to the firewall.

I imagine they put the hose at the firewall to prevent the carpet from getting drenched "IF" the heater core failed???? A basin "if you will" to catch the coolant and direct it out of that basin with the tube on the firewall?
 
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Old 11-18-2012, 05:54 AM
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Yo Mike....I'm in Maine also! Harpswell to be exact. Bring your tools, I'll get the beer LOL
Bruce
 
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Old 11-18-2012, 06:22 AM
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Originally Posted by Premier1one
Yo Mike....I'm in Maine also! Harpswell to be exact. Bring your tools, I'll get the beer LOL
Bruce
Bruce,

It could take a very large quantity of beer to tempt Mike to volunteer for this particular repair.

Graham
 
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Old 11-18-2012, 07:33 AM
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Yes....could be quite the project.
Is there a picture somewhere to verify that there IS a drain in the event of a heater core failure with leakage?
 
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Old 11-18-2012, 04:11 PM
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Hi Graham- Removed everything according to repair manual (not to hard just a little time consuming) But.....I just can't seem to pull the core out. Must be stuck from age. Going to try again when i get some more time. Calling it for the night- Patriots playing the Colts. Bruce

P.S. I ordered another core today/ maybe it will reveal some other type of mechanism that secures it to the heat/cool box
 
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Old 11-19-2012, 07:40 PM
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Got the core out, had t remove some clips, the servo, and 1 screw from a module that was holding the housing closed (passenger side, removal of glovebox and glovebox housing)

Yup, It had a hole in it
 
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Old 11-20-2012, 07:38 AM
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well I'll be. I grew up in Brunswick. and actually I had knee surgery Thursday and still recovering. but turning wrenches is always a good time, not sure how good I'd be on the other side of sober though
 
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Old 11-22-2012, 04:06 AM
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haha (to the other side of sober) Just waiting on the core to button her back up. I'm going to post some pics up for others on the forum if they ever have the same problem. I've been documenting the process, Hard to believe they put so much in the way but i guess heater core replacement is not a typical fix.

Take care of that knee
 
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