Heater blowing lukewarm air MG410 Gypsy

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courior
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Heater blowing lukewarm air MG410 Gypsy

Post by courior » Thu Dec 11, 2014 1:37 am

Hi all,

My 410 is blowing only very mildly warm air, and only on number 1. If i make the fan go any faster the air starts coming out cold.

I noticed the other day that in traffic it gets slightly warmer (the air from the heater), but only slightly.

The temp gauge makes it to about 1/3 up the scale and sits there or goes a bit lower if its cold and im moving. It does have a thermostat at 85C. The water pipe to the top of the rad is too hot to touch when its up to temp so its working ok i guess.

Why else could it be not blowing nice and toasty? Cheers

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Re: Heater blowing lukewarm air MG410 Gypsy

Post by Anton » Thu Dec 11, 2014 4:38 am

That sounds to me like a blockage in your heater core somewhere. But I'm really the opposite of an expert on heater cores, I really am just guessing.
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Re: Heater blowing lukewarm air MG410 Gypsy

Post by Fwb2700 » Thu Dec 11, 2014 4:52 am

Defiantly sounds like your heater core is blocked or damaged.
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Re: Heater blowing lukewarm air MG410 Gypsy

Post by ferris » Thu Dec 11, 2014 7:30 am

There is a valve in the engine bay that controls the amount of water that go's into the matrix. Check that that is opening fully. Mine was rusted stiff when I bought it but a bit of wd40 sorted it out.
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Re: Heater blowing lukewarm air MG410 Gypsy

Post by twiss » Thu Dec 11, 2014 8:09 am

My heater works nicely mate, not that we really need a heater over here ;)
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courior
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Re: Heater blowing lukewarm air MG410 Gypsy

Post by courior » Thu Dec 11, 2014 2:31 pm

But when I put it on to demist the window and it blows out cold air its annoying. Can I have your heater matrix then?? :p
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Re: Heater blowing lukewarm air MG410 Gypsy

Post by twiss » Thu Dec 11, 2014 2:58 pm

I would check that heater valve as mentioned above... even with a crappy matrix I'd think SOME hot water would get into it... and give at least lukewarm
Twiss

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Re: Heater blowing lukewarm air MG410 Gypsy

Post by Fwb2700 » Thu Dec 11, 2014 10:24 pm

If anyone in my needs the entire heater I have mine in a cardboard box in the shed somewhere. Never tested of it worked but water wasn't bypassed and wasn't any leaks so I assume it does. Free to anyone who wants it
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Re: Heater blowing lukewarm air MG410 Gypsy

Post by Darrell » Thu Dec 11, 2014 11:04 pm

Its quite common for the heater matrix to get covered in crap, if say it's regularly parked under a tree.

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Re: Heater blowing lukewarm air MG410 Gypsy

Post by courior » Fri Dec 12, 2014 4:18 pm

There is a lot of air coming through. Just ain't very hot. I had a look at the valve thing and in fully hot mode from the dash it wasn't very open. I disconnected the cable and have wedged it in fully hot position. If it works I'll leave it like this. Never need cold as in summer just blows hot anyway lol. And now in our freezing 15c temps hot air can help with mist :)

Haven't tried it yet but will on the next outing :)
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