Question about 2003 Chrysler 300M

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My 2003 chrysler 300 m special is over heating. the water level says its got plenty of water. the temperature gauge will drop when i turn the heater on

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Check for a plugged radiator and make sure the cooling fan go on,catch the cooling problems early these engine blows headgasket real easy, bring the engine up to warm up temperature turn engine off (watch out for fan) feel the radiator it should be warm throughout the whole area and no cold spots if there is a cold spot then you radiator is plugged, if its not make sure the fluid if filled fill up if you have to . Start the engine and watch the gauge when the needle of temperature is in the middle area the fan should come on if it doesnt turn the A/C on and see if the turns the fan on.if neither a/c control does not turn the cooling fan on the you will need a cooling fan, also make sure there is no coolant leak

Posted on May 24, 2011

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SEEM LIKE YOU HAVE THE TERMOTAST BAD ,WHY WHEN YOU TURN THE HEATER ON TEMPETURE GOES DOWN? ITS BECAUSE FAN TAKE PAR TOF THE HEAT OUT OF THE ENGINE

Posted on May 24, 2011

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Coolant in the resevoir doesn't tell you what is in the system,
if you don't have vacuum when the engine cools off.

Do you have coolant flow thru the radiator,is the
thermostat stuck?

Are the fans coming on?

Posted on May 24, 2011

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Posted on Jan 02, 2017

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2003 chrysler town and coy try, temp gauge goes up and heater gets warm when idling, but as we drive the temp gauge goes way down and heater blows cool air. Any suggestions?


1. Engine Coolant Temperature.
If the thermostat in the cooling system is getting stuck in the open or partially open position rather than opening and closing as needed to keep the coolant at the required operating temperature then you will get the results you have described here with the coolant temp dropping as you drive. The radiator is providing optimum cooling when the car is moving and there is plenty of cold air flow through it.
I am assuming the temp gauge in the vehicle is reading correctly.

Thermostats in the cooling system do become faulty in time and it may well never have been changed (or only changed once) since the car was built and is possibly gummed up with debris. With those symptoms I would definitely change the thermostat. Make sure a full flush of the cooling system is done at the same time and refilled with fresh coolant.

2. In Car Heater.
I would not worry about the interior heating until you change the thermostat on the cooling system. However if you continue to get cold air from the heater then there will be an issue with hot coolant from the cooling system being restricted in flowing through the heater core.

Feb 22, 2016 | Chrysler Cars & Trucks

2 Answers

Heater temp on high only bows luke warm air after driving. A/C works just fine.Plenty of cold air from it


heater blows cold air idle chrysler 300 Questions & Answers ...

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RedditFeb 12, 2014 - Heater blows cool air when stopped and warm air while driving 2008 Kia Spectra (self. ... just fine but appears to blow cool air when I was stopped at a stoplight. ... My temp gauge would also be pegged high when at idle / low RPM. ...thermostat only blocks coolant going to the radiator, and the heater core, ...Missing: 300m ‎luke

Why is My Car AC Blowing Hot Air? - BlueDevil Products

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Jan 27, 2016 | 2000 Chrysler 300M

1 Answer

1997 lexus es 300 over heats, i turn the heater on full blast and temp. goes down


Check the basics first start with water and oil levels make sure they are where they need to be. If that doesn't work try replacing the thermostat

Feb 05, 2013 | 1993 Lexus Es 300

2 Answers

Heat gauge goes way up,then by reeving motor it will go down.blows cold air


Check out related help links with solutions to troubleshoot the problem:---
Click the link below:---
2004 Toyota Tundra: Oil Gauge and Temp Gauge Not Working?


http://howtobyme.blogspot.in/2012/05/2004-toyota-tundra-oil-gauge-and-temp.html

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Toyota 4Runner: Temperature Gauge Sensor http://technoanswers.blogspot.in/2012/04/toyota-4runner-temperature-gauge-sensor.html

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Temperature gauge sits over half way mark? http://schematicsdiagram.blogspot.in/2012/04/temperature-gauge-sits-over-half-way.html
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Heater blows intermittently and temp gauge goes erratic?


http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html
------------- No heat on Oldsmobile Silhouette? http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html
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Temperature gauge does not move and no heat when heater is ON? http://technoanswers.blogspot.com/2012/01/temperature-gauge-does-not-move-and-no.html
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Temperature gauge keeps fluctuating up and down close to red? http://technoanswers.blogspot.com/2012/01/temperature-gauge-keeps-fluctuating-up.html
----------- Temperature gauge on the dash quit working on Pontiac Grand Prix? http://technoanswers.blogspot.com/2012/01/temperature-gauge-on-dash-quit-working.html
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Dodge neon gauges not working? http://technoanswers.blogspot.in/2012/02/dodge-neon-gauges-not-working.html

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Heater blows cold? http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

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Heat blows cold on drivers side and hot on passenger side? http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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1992 Lexus LS400: Engine overheats, Antifreeze out of reservoir and heater Blows Cold Air? http://whatisbyme.blogspot.in/2012/05/1992-lexus-ls400-engine-overheats.html

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These details will help.
Thanks.

Nov 22, 2012 | 1997 Ford Taurus

1 Answer

2004 Impala ls temperature dash gauge


fans came late on those car,like 212 and second fan comes on at 224,you reprogram it to come a lot sooner,,other thing is there might be gunk inside the block,and coolant has hard time to pass through,and staying longer than enough in block temp goes high,even tough the radiator is doing it's job,it is just coming out block lot hotter than it suppose to be,and gauge read the block not the radiator

Apr 18, 2017 | 2004 Chevrolet Impala

1 Answer

2003 Town & Country - no heat or gauge movement


If the coolant level (antifreeze) level is low there may not be enough fluid in the system for the temperature sensor to register a proper reading ( think of it as holding an oral thermometer just outside of your mouth).

Insufficient fluid passing through the heater core (small fan that blows through a small heated radiator) may not be enough to produce heat.

However: At increased speeds the engine may be heating what little fluid there is to a point to supply heat to the heater core, and register on the temperature sensor.

Feb 28, 2010 | 2005 Chrysler Town & Country

1 Answer

How to replace thermostat on


Do this when cool. Take radiator cap off, start the engine, turn on heat (not defrost) and now top up coolant to about an inch or 2 from top of radiator, as level drops down, and let vehicle run until the radiator fan comes on, then off, about 3 times, and add coolant as needed while it's running. After that, put radiator cap back on tight & make sure return bottle is filled to proper level. Now try that & see how heat is, temperature gauge etc, and keep an eye on return bottle level for a while. Let me know how it is.

Mar 27, 2009 | 1992 Nissan Maxima

3 Answers

No heat in car and temp gauge rises while driving but stays half


With engine cold, remove rad cap & check level in rad. Top it up if needed to 1 or 2 inches from top. Start engine, turn heater on (not defrost) and observe coolant level as engine warms up, add if necessary. Radiator fan should be off, and only come on when engine reaches normal operating temperature, for a short time, then shut off again. Let it run until that happens about 3 times, then put rad cap back on. If temperature gauge climbs up over normal toward hot, too much, shut it off. Do you now have heat? Is rad fan acting as I described? Let me know.

Jan 25, 2009 | 2001 Ford Escort ZX2

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