Question about 2003 Pontiac Grand Am
It is time to discover the temperature of the coolant in your engine whilst it running.
Use a cooking thermometer and test the temperature after about 10 minutes of operation.
It should be about 160 - 200 degrees Fahrenheit.
(Convert to Celsius if you wish.)
If it is not, you still have a problem with a "too cold "engine.
If it is, you have a problem with heated coolant circulation.
Suspect a heater control valve that is not opening, and allowing the heated coolant to flow through the heater inside the car.
This might be the valve, or the control on the dashboard, a pinched heater hose, or a vacuum leak somewhere.
God bless your efforts.
Posted on Dec 11, 2015
Is engine coming to normal operating temp
Posted on Dec 11, 2015
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Nov 19, 2017 | Ford E-150 Cars & Trucks
Nov 01, 2013 | 2002 Mercury Mountaineer
Nov 20, 2011 | 1992 Honda Accord
Jan 16, 2011 | 1991 Toyota Camry
Dec 03, 2010 | Dodge Ram 2500 Cars & Trucks
Dec 02, 2010 | Chrysler Voyager Cars & Trucks
Suspect it is the blend door actuator, but please see my tip at http://www.fixya.com/cars/r6235876-no_heat_fan_blowing_cold_air . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info. Below are instructions for replacing the blend door actuator, but don't replace it unless you're sure it's bad. Autozone has it for $36. First, take it out, plug the connector back in and see if it turns when you change the temperature control. If not, the problem can be in the controller or the actuator. If it is clicking, the problem is stripped gears. If it isn't doing anything, you can check for voltage at the connector with a voltmeter. Connect the black meter lead to a good ground point and probe the connector terminals with the red lead while changing the temperature setting.
Blend door actuator removal and installation: Fig. Air temperature actuator removal
Fig. Air temperature actuator removal
Oct 31, 2010 | 2004 Chevrolet Malibu
Oct 22, 2009 | Eagle Vision Cars & Trucks
134 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: