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Unread 01-16-2009, 01:46 AM   #1
Snipeston
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YJ Heater Upgrade Question

Looking at upgrading my blower motor in my 89 YJ. I have read all the write ups and several mention replacing the heater core while you are in there. What is the purpose and how much does it help? Do you use the Chevy Blazer on to match the blower motor?

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Unread 01-16-2009, 04:06 AM   #2
Solus
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from what ive heard when you go in an order a wrangler blower motor it actually is the blazer motor. As far as the heater core goes. Its recommended that you replace it because chances are with an 89 its 23 years old. a new one should help the heat a little at least.
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Unread 01-16-2009, 05:47 AM   #3
rustywrangler
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Part number PM102 at napa, advance auto, etc. As said above, most of the places have already replaced the part number in their system to reflect the bigger blower.

The heater core can help alot. First off, it is full of years of crud. Second, a new clean core will transfer heat more efficiently and faster than an old gumed up one.
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Unread 01-16-2009, 07:07 AM   #4
Brandon_YJ
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As for the core, you just get a stock Jeep replacement core.
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Unread 01-16-2009, 01:38 PM   #5
timatoe
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As mentioned the PM102 is the same for the Blazer and YJ now. I recommend people replace the core, because it's not very expensive and you're already in there. I didn't replace mine when I did the blower, then it went bad and started leaking a couple months later and had to pull all that out again.
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