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Old 10-22-2010, 10:33 PM   #41
damoeli
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Default Re: How-to Replacing heater core w pictures

you are the man! I have just spent the past two hours of my life wandering around this, and one other saturn blog, looking for tips on how to change the heater core in my wife's 01 sl1. I am doing it first thing in the morning and having done one in the past on a dodge, I was dreading removing half of the car to get at the hc. Thanks to you I now have a glimmer of hope that I will have time left in my day to go catch some salmon down at the dam. Thank you,Thank you,Thank you,Thank you,Thank you

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Old 11-02-2010, 01:36 PM   #42
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Default Re: How-to Replacing heater core w pictures

Quote:
Originally Posted by damoeli View Post
Thanks to you I now have a glimmer of hope that I will have time left in my day to go catch some salmon down at the dam. Thank you,Thank you,Thank you,Thank you,Thank you
You're welcome! What kind of salmon are you after? Rainbows (water chickens), undoubtedly.

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Old 12-06-2010, 09:19 AM   #43
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Default Re: How-to Replacing heater core w pictures

Hopefully not dredging up an old thread/post; but I may have to do this soon in the 97 SW2.

After replacing the exhaust recently; driving around in the cold, we get nice heat on the recycle button, but if we just have the heat on, it doesn't get very warm, very quick...more of a slow buildup of heat.

To those that have replaced the heater core, it actually doesn't look too difficult to do.

Shawn V and others: Any recommendations on a specific replacement?

RockAuto has a few of them:

Spectra ($37) , Delphi ($44), and Vista-Pro ($53)

Which brand have you used as a replacement, and are you happy with the results 10 months later?

...
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Old 03-01-2011, 02:05 PM   #44
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Default Re: How-to Replacing heater core w pictures

Nice! How much coolant came out of the heater hoses when you removed them? Did you pinch them to keep coolant from coming out? Did you have to add coolant after replacing the core?

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Old 04-28-2011, 03:58 AM   #45
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Default Re: How-to Replacing heater core w pictures

Excellent job! I didn't know how to replace my heater core and then I saw this thread. Thank you very much!

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Old 05-02-2011, 08:40 PM   #46
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Default Re: How-to Replacing heater core w pictures

Thanks ShawnV, Awesome Post!! My heater core didn't have a leak...I was tired when I pulled the engine/trans and left a heater hose attached. Thanks again!!

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Old 04-22-2012, 10:05 PM   #47
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Default Re: How-to Replacing heater core w pictures

my heater core went bad 1 day after replacing waterpump and serpentine belt.ty for the step by step as i intend to do this myself as i did the pump and belt.also,replacing radiator and driver side spindle.

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Old 04-27-2012, 07:22 PM   #48
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I'm new here , nice thread!

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Old 06-07-2012, 09:16 PM   #49
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Default Re: How-to Replacing heater core w pictures

Thank you for the tutorial and the pictures. I managed to get the HC out and starting cleaning up all the antifreeze. I ordered the new HC and it should be in Sat. I must say that this has not been a pleasant job so far.

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Old 06-13-2013, 10:17 AM   #50
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Default Re: How-to Replacing heater core w pictures

Can anyone tell me how similar this is to replacing the heater core on an L series (2000)

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Old 06-13-2013, 12:57 PM   #51
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Default Re: How-to Replacing heater core w pictures

A heater core is a heater core for almost any car. Replacing one can be difficult as HVAC boxes are different from one model to another. You might find better info if you search the L-series threads. Troubleshooting may reveal nothing more than leaking O-rings.

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Old 02-24-2014, 09:37 PM   #52
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Default Re: How-to Replacing heater core w pictures

I just did this to my 1997 Saturn SW2. Thanks for the post, it helped get me started. When I bought the car in 1998 it had 27k miles, now it has 250k. It keeps moving along. I must say this took me 2 hours to just verify the heater core was bad. Then it took me 3.5 hours to put it all back together. I noticed the foam has gone bad and had to glue some of it back in place but that larger piece I will have to get some Home Depot sticky sided foam and replace it... so obviously I left the side panels off for access. The old foam is too far gone on the big round duct. I have paper towels in there for now. I used a Spectra heater core and it has swivel arms on it and that made it hard to get back in to a degree because the firewall has a cut out for the holes and you have to rock the tubes a bit to get it to go. I had to go back under the car to see what was holding it up then go back inside to adjust it and then it went.

Other things.. well I snapped the temperature cable bracket.. Thankfully two plastic cable ties fixed that. Having worked on cars, built engines, and raced, and replaced blower motors in other cars years ago I think I would have not broken that but it did so oh well. Seems this was a lot easier when I was 20. Laying upside down backward half in and half out of the car is not so easy anymore!

I bought the car used from a Saturn dealer and as part of the deal I demanded the Service Manuals.. ya those factory ones!! So I have that and they come in handy as in this case. The only think I can recommend is have some good silicone handy to put the foam back in place, or some double sided tape. Also, i used a 7/32 socket, and in the past I had replaced the heater core tube clamps on the firewall with hose clamps. Beyond that, stretch every day for about a month before you do it.

Oh do yourself a favor, drain the radiator first, as the hoses make a real mess on the firewall. I did most of it, but not enough. And don't lose the clips or screws!

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Old 05-14-2014, 10:20 AM   #53
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Default Re: How-to Replacing heater core w pictures

BOOM!! This. Rocks. Just did my '94 sl1 in two hours. I went in from the top after pulling the air cleaner off the TB. Thanks SaturnFans!!

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Old 12-02-2015, 03:00 AM   #54
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Default Re: How-to Replacing heater core w pictures

just checking in to say this was a very helpful guide for me, especially the interior part! i had no idea which screws to remove.

one suggestion, though... do the interior part first, then put a towel down under the heater core before you disconnect the hoses. i did it that way and not a single drop of coolant leaked onto my carpet.

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