Question about 1999 Chrysler 300M

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No heat on 1999 chrysler 300 - 1999 Chrysler 300M

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  • 5 Answers

Chysler = electrical problems. If you have digital readout for setting your temp. run it all the way up then all the way down, then hold hand over vent while runnig it back up. STOP when you feel air getting hot. Fix take out control unit and clean all connecting tips and put back. get a manual so you don't tear up more than you fix.
Also they have problem with heater control valve. With motor hot make sure both heater hoses located behind eng close to center are hot to touch. If not control valve is problem. Bill

Posted on Feb 09, 2010

  • Ernesto Garza Nov 02, 2012

    thanks alot will look at this right away!!!

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  • Chrysler Master
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Do the heater hoses get hot to the heater core?

Posted on Oct 04, 2009

  • Charles Wayne Laney
    Charles Wayne Laney Mar 04, 2015

    Yes they do. They are supposed to.

  • yadayada
    yadayada Mar 18, 2015

    Then the likely problem is the air temperature control blend door motor or the heater duct door is stuck and the motor can't move it to divert air over the heater core.

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More than likely it is the heater core.

Posted on Jan 10, 2010

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4 Suggested Answers

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Posted on Jan 02, 2017

  • 7 Answers

SOURCE: the car keeps coming up a code 23 on a 1999 chrysler 300 for the

Code 23= Blend door feedback control


On cars with automatic climate control: To enter diagnostic mode, set the temperature to 75F, press the the off button. Press Floor, Defrost\Floor, Front Defrost simutaneously for 3 seconds until the temperature display begins to flash.
On cars without automatic climate control, set the blower to any speed, turn the temperature control in between warm and cold. Press Floor, Defrost\Floor, and Front Defrost. All codes will flash via the Front Defrost button.
When the test is over all fault codes will be displayed (on cars without automatic climate control, they will be blinked out on the Front Defrost button).
Code Action
23 Blend door feedback control
24 ATC mode door feedback failure
25 Ambient temperture sensor failure
26 ATC in-car sensor
27 Sun sensor failure
31 ATC recirculate door stall failure
32 ATC blend door failure
33 ATC mode door stall failure
34 Engine temperture sense failure
35 Evap temperature sense failure
36 ATC head command failure

Posted on Jun 25, 2009

localwonder
  • 6784 Answers

SOURCE: The car cranks but won't start

Ok, check the following below--

1. Check the Ignition control Module for its operational value. it may be damaged.

2. Check the coils.
3. Check the plugs and wires.
4. Check the ECM/PCM/ECU(All represent the same device that is commonly known as the engine control computer)

Check these areas thoroughly for faults. I would also advise to replace the fuel filter and fuel pump as well.

Posted on May 31, 2009

emissionwiz
  • 76846 Answers

SOURCE: will a transmission in a 1999 chrysler concord

yes they are the same transmission outside and have the same disignation of 42LE, but they may be different gear ratio's, they have tags on them that can id the internal differences, the 300 uses a 3.5 liter, which is not avail in the Conord

Posted on Jun 22, 2010

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Hello claynalls56 and thank you for asking your question, on Fixya.

Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your 1999 Chrysler 300 3.5L, without even using any tools. It has helped millions of people, and I am certain that it will help you, because I wrote it for people like you. So here is the link to:
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Get more great, money saving, tips and tricks about your vehicle from: twitter.com/acoates23234

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