Minuit Posted April 26, 2015 Share Posted April 26, 2015 The original heater core on my '91 finally decided to give up life yesterday, so I'm planning on fixing that fairly soon. I don't really ever want to do it again, so who makes the best replacement heater core? What else should I take care of while I'm in there? Link to comment Share on other sites More sharing options...
MJam86 Posted April 26, 2015 Share Posted April 26, 2015 Have you tried just back flushing it? Link to comment Share on other sites More sharing options...
Minuit Posted April 27, 2015 Author Share Posted April 27, 2015 I wish my problem could be fixed by back flushing. Got a big green puddle in the passenger side floorboard. Link to comment Share on other sites More sharing options...
sloride Posted April 27, 2015 Share Posted April 27, 2015 Not sure you'll get a definitive answer of what's the best heater core to buy. I think they're all chicom made anymore. At least the ones I've come across are made over there....... If you're changing the heater core you might consider changing the a/c evaporator, provided you have a/c. Link to comment Share on other sites More sharing options...
Minuit Posted April 30, 2015 Author Share Posted April 30, 2015 Yeah. The only other option I can think of is an OEM one from the dealer... no thanks. I think I'll go with the aluminum Spectra one, since reviews on the forums I looked at seemed positive. I do have A/C and if funds allow I might do the evap core while it's apart. Thanks. Link to comment Share on other sites More sharing options...
sloride Posted April 30, 2015 Share Posted April 30, 2015 I have to assume '91s are the same as '88 when it comes to HVAC lines under the dash. When I dropped my dash, I found out the hard way there was a vacuum-hose-two-into-one splice that I separated by mistake. Only after buttoning everything up did I realize my controls didn't function as before. If you have that splice, tape it up with electrical tape or heat shrink them together. It not hard to miss. The tubes are resting on top of your heater/ac box. When you drop your dash, you'll see what I'm talking about. Link to comment Share on other sites More sharing options...
Megadan Posted April 30, 2015 Share Posted April 30, 2015 You can always take the original core to a local radiator shop and see if they can clean it up and fix the leak. It may cost as much, or more, than a replacement unit, but it is often an over looked option. Link to comment Share on other sites More sharing options...
ggcnash Posted April 30, 2015 Share Posted April 30, 2015 You can always take the original core to a local radiator shop and see if they can clean it up and fix the leak. It may cost as much, or more, than a replacement unit, but it is often an over looked option.This is what I done after receiving a new one that wouldn't fit Link to comment Share on other sites More sharing options...
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