YJ Heater Core and Heater Motor Replacement??

Boston Mangler · 01-20-2003, 07:33 AM

hey guys

i got to replace my heater core in my 1990 YJ and this looks like a nightmare of a job

is this really as bad as it looks or are there any tricks??

thanks

also, anyone have any info on the blazer motor upgrade while i am in there?

BamaJeeper · 01-20-2003, 02:05 PM

Here's a link to the motor upgrade.

http://www.4x4wire.com/jeep/tech/interior/cjheater/

There's alot of other useful info on that site.

**89YJmoneypit** · 01-20-2003, 04:25 PM

I replaced my heater core a few months ago and it wasn't too awful bad.The biggest pain for me was getting to the nuts on the firewall behind the engine,since you have a 2.5 it might not be as tight for you though.Takes a little wigglin to get the box out from under the dash too.

Boston Mangler · 01-20-2003, 05:38 PM

thanks guys

Gearhead231 · 11-25-2009, 11:10 AM

Yeah, Its an ok job. Just make sure you have all of your tools. Mabey have a friend help. Mounting the dash was intresting....

Tell me how it works out for you. I just did mine last week.

**89YJmoneypit** · 11-25-2009, 04:55 PM

I don't think you're gonna get an answer from him.....

Boston Mangler
STATISTICS
Join Date: 01-11-2003
Total Posts: 87
Last Activity 06-11-2003

.... This thread is almost 7 years old, but thanks anyway for searching

Also fyi to anyone that cares, there is no "Blazer motor upgrade" anymore, the YJ and the Blazer use the same part number now.

**Leans93** · 11-25-2009, 05:34 PM

Be careful when you are taking off the small plastic clips that attach the cables to vents that they operate. I broke all of them taking it off when I did mine and now my vents dont work correctly. Not a huge deal but kinda annoying.

hispeed · 11-27-2009, 10:01 PM

thought i had to replace my blower motor. turned out to be the switch. glad i thought about checking that out before i tore into the disassembly to change the motor out.

Tompatt · 11-27-2009, 11:29 PM

i say change out the motor and core. upgrading to the bigger motor isnt that hard.

**moonshinefuel** · 11-28-2009, 11:07 AM

It's not like replacing a heavy transmission, it is very light, the box, just an annoying job do to the awkwardness and reaching under the dash, etc. I have some pictures of my experience, it's not a big deal, just be patient with it as you can. Easy on the cable clips, try not to break them if you can help it. http://www.jeepforum.com/forum/f12/heater-core-replacement-870988/

Tshark299 · 11-28-2009, 11:36 AM

Quote:

Originally Posted by 89YJmoneypit

I don't think you're gonna get an answer from him.....

Boston Mangler
STATISTICS
Join Date: 01-11-2003
Total Posts: 87
Last Activity 06-11-2003

...And yet 4 more posts giving him advice. Amazing.

**89YJmoneypit** · 11-29-2009, 09:31 AM

(Jeep) Love is blind

01-20-2003, 02:05 PM	#2
BamaJeeper Registered User Join Date: Jan 2003 Location: Alabama Posts: 1,467 Profile Gallery Classifieds My Jeeps	Here's a link to the motor upgrade. http://www.4x4wire.com/jeep/tech/interior/cjheater/ There's alot of other useful info on that site. __________________ Out of the darkness comes light.

01-20-2003, 05:38 PM	#4
Boston Mangler Registered User Join Date: Jan 2003 Location: San Diego Posts: 87 Profile Gallery Classifieds My Jeeps	thanks guys __________________ Boston Mangler 90 2.5L YJ (Under Progress) Check My Website for Lot Of YJ Tech: [url="http://www.yankeetoys.org/mangler/"]http://www.yankeetoys.org/mangler/[/url]