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Heater Core Flush?

14400 Views 14 Replies 5 Participants Last post by  Clint
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Hey everyone. This is my first real post and pretty much why I joined. I'm hoping for some good advice as I keep my '07 Frontier for at least a few more years (cross fingers). Anyway, here is my issue.

Recently I started noticing the scent of anti-freeze. After checking things out, I discovered a leak around one of the heater core hoses (see pics). I don't have anything leaking in the interior of the truck. It appears to just be from that hose. So, a couple of questions:

1) Is it possible just flushing the heater core could fix my problem?

2) What exactly is that plastic connector that the rubber line is going into and the metal pipe going off to the right?

3) if that plastic part is some sort of valve, could it be blocked or malfunctioning and need to be replaced (instead of an issue with the heater core)?

Thanks!

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You need the whole aluminum tube that wraps around the back of the motor on the firewall... I had to replace it before because the plastic got brittle and snapped when I bumped it. Was about 80 bucks for the whole thing at the dealer, took 10 min to install with hand tools.

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Looks like a leaking plastic fitting to me. Does your heat work?

The tube carries coolant to your heater core, so you have heat. lol
My guess is so after 6 years or so Nissan can collect 80 dollars on a replacement. No idea really, planned obsolescence?

Call your dealer soon, I got lucky as someone had ordered the part but never picked it up so it was in stock. But the guy at the counter told me if he'd need to order it, could be more than a week.
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