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Question instrument panel / heater core

Old 12-03-2016, 04:43 AM
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Question Question instrument panel / heater core

I have to change my heater core this week and have a bit of what might seem a daft question to jeep people who have done this a dozen times. I've seen all the right ups for instrument panel removal and steering column removal but it looks like to get to the heater core I only need to get to the passenger side of the job. This being so, simply can I just free up the passenger side only to get to the core. This is on a grand cherokee model.
Sorry to bore every one with lame questions that seem easy I'm sure to hardened jeep people but it's a bit daunting looking at removing the whole panel.
Thanks for listening
Paul.
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Old 12-03-2016, 10:42 AM
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What are you driving, Paul?
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Old 12-03-2016, 12:43 PM
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It's a2001 jeep grand cherokee Ltd 4litre engine it UK so right hand drive but every thing looks mirrored.
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Old 12-03-2016, 04:02 PM
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FWIW, it might make sense to also swap out the A/C evaporator at the time. When I replaced my failed evaporator I also swapped my intact heater core, to limit the opportunity to revisit this fun.

When I did this job on my '94 I hinged the dash away from the passenger side, with the "hinge" point being the driver's side. I did not remove the dash.

IMO, that makes the job easier.


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Old 12-03-2016, 04:12 PM
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Ah I didn't know about this hinge on the dash not mentioned on my manual. Have you seen this written down? That does sound good thanks very much.
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Old 12-03-2016, 05:03 PM
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There is not a hinge on the driver's side. When I did my service I pulled away the passenger side with the "hinge" point being the driver's side.
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Old 12-03-2016, 07:20 PM
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Just remember you're flexing the plastic and if you go too far, things can snap! Just saying.
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Old 12-04-2016, 06:12 AM
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When I did mine there was not plastic flexing. the entire dash was detached, the wiring was detached on the passenger side. The wiring was not detached on the driver's side. The wiring flexed as the passenger side was pulled away to expose the heater box.
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Old 12-06-2016, 09:21 AM
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Hi again. Managed to get my instrument panel out OK. Slight problem my hv unit doesn't match what's in my manual or in the photos above. Mine seems to have the heater core at the bulk head side of the hv unit. I'll pop a photo on. Basically any ideas were I can get a drawing of what's inside mine and we're to find the heater core




My hv unit.
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Old 12-06-2016, 10:16 AM
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The heat box needs to be removed from the vehicle.

Evacuate / recycle the R134a, drain the coolant, unbolt / disconnect the box, remove the box, split the halves and remove the heater core.
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Old 12-06-2016, 10:23 AM
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That's what I feared ��thanks for that. I assume R134a you mean the fluid.
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Old 12-06-2016, 12:14 PM
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In the US the air conditioning refrigerant is R134a. Back in the dinosaur days we could bleed the old R12 into the atmosphere. Al Gore had a cow and now we have to recycle the refrigerant instead of dumping it into the air.

The other system that needs draining is the heater core antifreeze.
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