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Problem with heater

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Old 10 Feb 2011, 06:02 pm
Fresh Cruiser
Join Date: Feb 2011
Posts: 1
Default Problem with heater

The heater has stopped blowing air out of the lower setting and the air that is coming out of the upper setting feels extra hot. Is there anything I can check myself before taking it in?
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Old 10 Feb 2011, 06:19 pm
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Join Date: Sep 2001
Posts: 27,750
Default Re: Problem with heater

Welcome to the forum. There's only one blower motor but that goes through a Blower Motor Resistor Block which regulates the speed so it's possible the low speed part of that Resistor block is burnt out. Don't think you can test it or fix just the low speed.

As far as feeling "extra hot", your guess is as good as mine. I did a search but everybody seems to have the exact opposite of what your experiencing ...not hot enough.
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Old 10 Feb 2011, 08:45 pm
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Default Re: Problem with heater

Put a meat thermometer in the vent so you can tell what the temp is.

2008 Silver Steel Metallic, Touring, NA, Sirius; Chromed door handles; lower grille; fog light surrounds; chrome front & rear bumpers strips; Airaid air filter; Bassani duals; Modesty Cover; Autolite AP5263 Platinum Plugs (.040); Crane Plug Wires; NAPA Ceramic pads; Blane hood struts; PTeazer Gas, Brake & Foot Rest Pedals, '05 Rear Step Pad, Stainless Door Sills, Llumar tint, "A" Piller chrome; APC Strut Bar
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Old 11 Feb 2011, 01:26 pm
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Join Date: Jun 2009
Location: Glendale, AZ
Posts: 496
Default Re: Problem with heater

My first thought is that the vacuum switch that operates the blend door that moves the air flow from upper to lower vents is shot, or the blend door is jammed, or the hose is broken or leaking. First place to look is under the hood. Follow the gig, honkin' hose that comes off the brake master cylinder. Eventually, there will be a smaller hose that goes into the car through the firewall. If there are obvious breaks or disconnects, that is likely the problem and you can fix it on the spot. If not, it is, sadly, off to the shop.

Have you had any changes in how the brakes feel? Sometimes the problems can occur together. While that will seem to make no sense at all, there is actually a connection. The brakes will work fine, but seem just a trifle harder or mushier. That's an indication of a vacuum leak like I mentioned in the first paragraph.
1996 Dodge diesel 4X4, 2001 PT Cruiser Touring with rear disc brakes, [Now gone 2004 PT Cruiser Base 5 speed], 2007 Chrysler T&C Touring
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