How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask relicdigger3 Your Own Question

relicdigger3
relicdigger3, ASE Certified Technician
Category: Pontiac
Satisfied Customers: 180
Experience:  ASE Certified Master Technician, GM Certified Technician, 13 Years Experience.
Type Your Pontiac Question Here...
relicdigger3 is online now
A new question is answered every 9 seconds

2002 Pontiac Grand AM: V6..I feel cold air in the vents..overheated

Customer Question

2002 Pontiac Grand AM V6. While the car is heating up I feel cold air in the vents. While this has happened the car overheated to the red line. I have had the mechanic go thru it and even changed the thermostat. Occasionally the low coolant light comes on and off but the resevoir is full. I had a new cap replaced also. If the car warms up with warm air coming thru the vent the car heats up normally. What could be causing the overheating problem?
Submitted: 2 years ago.
Category: Pontiac
Expert:  relicdigger3 replied 2 years ago.

Many times when working on the cooling system of these vehicle's air can be come trapped in the system causing conditions similar to the one you are describing. The mechanic may want to try to bleed the air from the system to see if this resolves the problem. The coolant light could be caused by a faulty coolant level sensor. This is considering there are no leaks in the system.

Customer: replied 2 years ago.

The mechanic has bleed the system twice after performing work on the vehicle. He just did it after replacing the thermostat. We both have not seen any leaks. He did a pressure test of the system and did not find any leaks or drop in the pressure.

Expert:  relicdigger3 replied 2 years ago.
If there are no leaks and the system is holding pressure, there is always a possibility the coolant temperature sensor or the cooling fans are faulty.
Customer: replied 2 years ago.
The switch he replaced does both the temperture sensor and the cooling fans. Are there any other sensors that feed the car system? I did mention this is intermittant. I am nervous to drive this car any distance. A bit more info from last night. I took the car out when it was cold. It was blowing cool air all the way until it hit the red line (260deg), I was able to shut the car off just at the 260 deg mark. I checked and did not see any leaks of smoke. I waited about 10-15 minutes and turned the key to light up the dash. The temp registered normal so I started the car and everything was fine. I drove it home the next mile with no problems.
Expert:  relicdigger3 replied 2 years ago.
Have you tried flushing the cooling system? The chemicals in the engine coolant tend to wear down over time and gunk could build up in the radiator. Be sure there is nothing covering the radiator like a paper bag. This could also cause the engine to overheat. There is also the possiblity the engine is not overheating and the temperature gauge in the instrument cluster is faulty.
relicdigger3, ASE Certified Technician
Category: Pontiac
Satisfied Customers: 180
Experience: ASE Certified Master Technician, GM Certified Technician, 13 Years Experience.
relicdigger3 and 7 other Pontiac Specialists are ready to help you
Customer: replied 2 years ago.

I don't believe the gage is faulty. I can suggest a full system flush. If you don't have any other ideas of why the car is sometimes blowing cold air and overheating then I will accept your answer.
Thanks

Mike

Expert:  relicdigger3 replied 2 years ago.
Thank you.

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Last | Next >
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
  • He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX
 
 
 

Meet The Experts:

 
 
 
  • Dave Nova

    Pontiac Technician

    Satisfied Customers:

    1917
    ASE Master Certification. GM World Class Certification
< Last | Next >
  • http://ww2.justanswer.com/uploads/DT/dt69nova/2012-6-15_234154_pic1.64x64.jpg Dave Nova's Avatar

    Dave Nova

    Pontiac Technician

    Satisfied Customers:

    1917
    ASE Master Certification. GM World Class Certification
  • http://ww2.justanswer.com/uploads/PE/peterpete190/2012-2-24_1274_20120215135406.64x64.jpg Pete's Avatar

    Pete

    Pontiac Technician

    Satisfied Customers:

    1243
    15 Years Pontiac Technician and training.
  • http://ww2.justanswer.com/uploads/ggrote1/2009-06-27_031011_me.jpg Gary's Avatar

    Gary

    Pontiac Technician

    Satisfied Customers:

    943
    15 years GM master tech/15 years ASE master
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Pontiac Tech -

    Satisfied Customers:

    570
    18+yrs experience. State Inspector and Pontiac Diagnostics
  • http://ww2.justanswer.com/uploads/testedtuff/2009-09-26_170108_pictures.jpg John's Avatar

    John

    GM FACTORY CERTIFIED TECHNICIAN

    Satisfied Customers:

    514
    ASE A1-A8 w/L1 GM master technician.Factory certified/40 years experience
  • http://ww2.justanswer.com/uploads/Rocket2005/2009-09-13_133703_jack.jpg car tech's Avatar

    car tech

    ASE Certified Technician

    Satisfied Customers:

    446
    25 years master tech and shop owner
  • http://ww2.justanswer.com/uploads/MO/molurch/2012-6-6_214526_500.64x64.png Don 'Mo Lurch''s Avatar

    Don 'Mo Lurch'

    Pontiac Mechanic

    Satisfied Customers:

    441
    GM, Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.