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BMW 3-Series (E90 E92) Forum
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335i heat doesn't blow hot
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11-11-2015, 01:42 PM | #1 |
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335i heat doesn't blow hot
With heat turned all the way up it never warms up, air out of the vents feels about the same as outside. Yes the dial is turned all the way to the red. The entire drive to work this morning I could see my breath in the car! I was thinking thermostat, but the car isn't throwing thermostat codes... coolant is full as well. Somebody help me out, I'm freezing lol.
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11-14-2015, 10:38 PM | #6 |
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Never mind, fixed it tonight. Drove the car and came back home. Felt all the coolant houses by hand and every one was hot besides the ones to the heater core indicating it was clogged. I detached the output house from the firewall and slipped a long vinyl hose over the end. I attached the other end of the vinyl hose to my garden hose and cranked it on. After a few seconds of nothing coming out, chunks of what looked like mud and sand blew out the other house that attaches the heater core to the radiator. I reattached everything filled up coolant and bled it and now I have heat.
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11-15-2015, 12:35 AM | #8 |
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Looks like you threw up all over your engine but glad you got it fixed! Quite crazy.
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11-15-2015, 04:31 PM | #9 |
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This has been happening lately on a few vehicles, and I JUST noticed it today. I'm going to try your procedure out this week when I have time. Thank you for your post, I have the same exact symptoms.
The hoses by the firewall. Are they located on the passenger side or driver side? I'm getting warm to warmer air on the driver side and luke warm to cold air on the passenger side. |
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11-15-2015, 05:12 PM | #10 |
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Great job clearing the clogged heater core. I hope you did a complete coolant system flush while you were at it. If your heater core was clogged with that, your radiator may be partially clogged with it too.
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11-15-2015, 09:42 PM | #11 | |
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Good luck! |
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12-17-2015, 05:01 PM | #12 |
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Same problem
I had the same problem.... no hot air..... Went to the "Dealer" since the car is under warranty..... However the car was @ the shop for over a week, then they told me that there was a problem with the heather core, that it was plug with a "extrange" liquid (gray & glueish) and the warranty will not cover the repair/labor so after $2600.00 they fixed the problem! WT*%#.....!!!!
Last edited by sportrider3000; 12-20-2015 at 11:51 PM.. Reason: ... |
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12-17-2015, 11:32 PM | #13 |
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I had the same problem a couple weeks ago. Indy thought my water pump and thermostat were going. Ended up my water pump ground wire came out somehow. Simple clean up and plug back in
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12-18-2015, 12:17 AM | #14 |
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That too me (the stuff that flushed out of the OP's core) maybe looks like the previous owner in Texas maybe had a leak issue with the heater core and maybe tried one of those "Stop Leak" cocktails to try and cure the problem. I have read of a few people giving those concoctions a try only to end up with a clogged heater core. Yeah the leak may stop but so did their heat.... If that were the case hopefully it says sealed not that its been unclogged.
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12-20-2015, 11:55 PM | #15 | |
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