Two sizes of heater cores?
12-02-2009, 09:44 PM
#1
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Two sizes of heater cores?
Since winter is on the way in Canaduh. my truck is lacking heat, my rear heat works like a champ.. but the front lacks everything. I was at my buds part store and it came up with two heater cores for my truck. One was a smaller size, something like 7x10? and it noted with rear heat, but the other one was 9x11?(bigger size) without rear heat. Now just curious, if anyone ever had a choice when getting a aftermarket heater core you were presented with these options.. Im wondering if i could fit the bigger one in there for a little more heat?
And.... when replacing the heater core, anything else I should be aware of, replace while im in there?
cheers
And.... when replacing the heater core, anything else I should be aware of, replace while im in there?
cheers
12-03-2009, 08:29 PM
#4
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I just replaced my heater core in my 85. It was difficult but not as hard as I had imagined. The heater works amazingly now. The air coming out of the vents is at 160 degrees. Definatly worth the effort to put a new core in
12-03-2009, 08:58 PM
#5
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Maybe all the 4Runners shipped to Canada got the optional rear heater, but I have an '87 that was originally shipped to Minnesota, and it has A/C, sunroof, and no rear heat.
Have you made sure your heater control valve on the firewall is actually opening when you move the lever on the dash? Even if the valve appears to be opening, it wouldn't hurt to remove a hose to make sure it is, and that it's not plugged up.
Have you tried back flushing your heater core? Seems like when people use stop leak [like a previous owner might have], that stuff like to settle in the heater core.
You can make a cheap back flushing tool out of a female garden hose repair end and a short length of heater hose. If you do this, go easy on the water pressure, as city pressure can blow up a heater core!
Have you made sure your heater control valve on the firewall is actually opening when you move the lever on the dash? Even if the valve appears to be opening, it wouldn't hurt to remove a hose to make sure it is, and that it's not plugged up.
Have you tried back flushing your heater core? Seems like when people use stop leak [like a previous owner might have], that stuff like to settle in the heater core.
You can make a cheap back flushing tool out of a female garden hose repair end and a short length of heater hose. If you do this, go easy on the water pressure, as city pressure can blow up a heater core!
hmm great to hear... how long did it take ya? 7-8 hours?
12-03-2009, 09:02 PM
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My 4runner has the rear heat its an 88 DLX, it a canadian 4runner also. Its a pretty time consuming job. Take your time haha cuz alot of the old plastic peices break easily in there. And your 4runner pushed air out the front vents right? just not heat? cuz ive had the heater fans go on me.
12-03-2009, 09:13 PM
#7
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ive had most of my entire dash apart, as in only thing left for me to take out was that cross member support beam thing. then after than little stuff.i kinda want to wait until january until i can have another car for a week or two to drive and do everything that could take longer then a "day" job in that week. like replace my hg and hc... hmmm what to do what to do.. It pushes air, but with not much volume to it, its luke warm.
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12-04-2009, 07:43 AM
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Ah, it could be a Canadian feature. I have the option list for US-bound 4Runners and don't remember seeing rear heat as an available option, which is why I asked.
My '87 was originally sold in Texas and has always been registered in Texas (I'm the third owner). No rear heat needed here, obviously.
My '87 was originally sold in Texas and has always been registered in Texas (I'm the third owner). No rear heat needed here, obviously.
12-04-2009, 08:10 AM
#9
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hmm thats interesting.... yeah were getting a big dump of snow for the next 3 days. it would be nice to have alot of heat while pulling people out haha.
12-04-2009, 02:47 PM
#10
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12-04-2009, 05:18 PM
#11
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Do check the heater valve and make sure it opens and closes, they can rust shut and not work at all. If you have to change the heater core its about a 4-5 hour job, its not hard, just time cunsuming. Ive done heater cores in two 86 4Runners.
12-04-2009, 06:16 PM
#12
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