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overheating
Sent to Car Experts March 14 07:30 PM

My 96 Lumina 3.1L V6 is overheating within the first 5-10 minutes of starting it. Coolant level is fine. I just installed a new thermostat and that was apparently not the problem. The heat in the car is coming out cold. There is no smoke or leakage of antifreeze when it overheats. Radiator is only 1 year old. System has also been bled. The car has 115k miles on it. A couple of times when I restarted the car after it cooled down, it was fine. Another time, I revved the engine a little bit and it must have caused the coolant to circulate and the temp went back to normal again. Any idea of what can be causing this?

Edited by Customer (name blocked for privacy) on March 14 2005 at 7:33 PM

Customer (name blocked for privacy)
Status:  Closed   Value: $7
Answer
March 14 7:54 PM (23 minutes and 44 seconds later)
         
REPLIEDCheck Mark
 Sounds like you still have air in the system. Run it until the thermostat opens. The shut it off and let it cool. When it's good and cool, check the coolant level again and top it off. Repeat this process again if it overheats.
PictureTech501 -- Auto Service Technician -- 96% Positive Feedback on 740 Car Accepts
38 years exp, ASE Mastertech with L1 Advanced Engine performance
Reply
March 15 6:53 PM (22 hours and 58 minutes and 59 seconds later)
         
Reply to Tech501's Post: Thanks for the advice but that didn't fix the problem. Maybe a flush will help?
Customer (name blocked for privacy)
Info Request
March 15 7:35 PM (42 minutes and 16 seconds later)
         
bottom hose sucking shut, or maybe the top one feel of them "cold of course" and see how soft they are. second thing is water pump working. just because its spinning may not mean its working with the cap off let it run till t-stat opens see if the water moves.
Joe Barcus -- Auto Mechanic -- 100% Positive Feedback on 23 Car Accepts
50 yrs old lol
Info Request
March 15 7:36 PM (31 seconds later)
         
 Was the old thermostat broken or missing any parts when you removed it. Have you added any kind of sealers to the system?
PictureTech501 -- Auto Service Technician -- 96% Positive Feedback on 740 Car Accepts
38 years exp, ASE Mastertech with L1 Advanced Engine performance
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