Heater core...AGAIN - Chevy Impala SS Forum
 
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post #1 of 7 (permalink) Old 10-11-2015, 05:00 PM Thread Starter
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Heater core...AGAIN

Ok, so there is either a MAJOR quality issue with heater cores these days or there is something else going on with my 96 Impala as my heater core is leaking AGAIN after just several months of last changing it. I have already checked my cooling system for electrolisys and that was negative. I have inspected inside the heater box to make sure there isn't anything that could be poking a hole in the core and now i'm lost as to why my car seems to like eating heater cores. What is THE BEST brand of heater core currently available? I have ran AC Delco's twice and Spectra once and Vista Pro once. I'm getting tired of replacing these damn things and even more tired of wasting money on anti-freeze.

1996 DGGM Impala SS
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post #2 of 7 (permalink) Old 10-11-2015, 05:12 PM
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I think it is just a crapshoot as to the quality. I went thru 2 failures in a couple of months then the third one has lasted 3 years so far. Fortunately, my mechanic did the job including the parts so the failures didn't cost me anything. All the cores came from CarQuest and I usually don't have any problems with their parts.
Having said that, I just replaced the VSS on the '94 T-Bird and two replacement parts in a row were bad. Again, it didn't cost me anything, but it has got to be the crappy Chinese parts.

Jim B.

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post #3 of 7 (permalink) Old 10-11-2015, 05:32 PM
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Quote:
Originally Posted by 4x4high View Post
Ok, so there is either a MAJOR quality issue with heater cores these days or there is something else going on with my 96 Impala as my heater core is leaking AGAIN after just several months of last changing it.
is the restrictor still present on your vehicle ?

Jason
1996 Roadmaster Wagon
1995 Caprice Wagon
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post #4 of 7 (permalink) Old 10-11-2015, 07:08 PM
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Where are they leaking - fittings, tank, etc?

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post #5 of 7 (permalink) Old 10-17-2015, 05:46 PM Thread Starter
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Quote:
Originally Posted by jasonlachapelle View Post
is the restrictor still present on your vehicle ?
Yes, in fact this last go around I replaced all of the heaters hose assemblies with new NOS from Hamilton Chrevrolet along with a new pressure cap.

1996 DGGM Impala SS
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post #6 of 7 (permalink) Old 10-17-2015, 05:47 PM Thread Starter
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Quote:
Originally Posted by grandpas wagon View Post
Where are they leaking - fittings, tank, etc?
The last 3 have all leaked from the core near the header and i'd suspect this current leak to be in the same area but i'm not ready to pull it just yet.

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post #7 of 7 (permalink) Old 10-19-2015, 10:15 PM
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Quote:
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is the restrictor still present on your vehicle ?
flow control valve (restrictor) MUST be in place and working to protect the core form over-pressurizing.

http://www.amazon.com/ACDelco-15-5508-Original-Equipment-Control/dp/B000C9GUV2

valve only: 10157988 coolant flow control valve 8.866 (also ACDelco 15-5423)

http://www.amazon.com/ACDelco-15-5423-Original-Equipment-Control/dp/B000C9DDBW/ref=pd_sbs_263_2?ie=UTF8&refRID=0FD7KJABYSGFT35299XT&dpID=31rDxCmrfsL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_

http://www.gmpartsdirect.com/oe-gm/10157988

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Last edited by Navy Lifer; 10-19-2015 at 10:23 PM.
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