•  
    Results 1 to 3 of 3

    Thread: Heat then No heat?

    1. #1
      What's wrong with my car?
      Join Date
      Sep 2018
      Location
      Michigan
      Posts
      6
      Thanks
      0
      Thanked 2 Times in 2 Posts

      Heat then No heat?

      Good morning Aveo forum, new participant here. Just bought my first 2010 Aveo sedan Lt. 84500 miles on it. Bought it from a co-worker who recently had issues with the overflow tank cap, it suddenly blew off the tank while driving down the road. He refilled and replaced the cap. He also has had the head gasket replaced and head resurfaced along with replacing the timing belt from a previous incident. I drive 43 miles to work, morning till afternoon. While driving with the heater on, i get cold air then hot air. I have bled the system with cap off. I also have hooked my diagnostic scanner to it while driving to view live data. The coolant temps will range from 185 to 240 constantly, back and forth. This is why, im guesing, as to the fluctuating heat issue. T-stat opens then closes. Also, while parked and running, it will stay at a constant 203 to 206. To my knowledge the t-stat has not been replaced and has the plastic base still. Do you recommend i replace the t-stat? If so should i go with the updated metal base? Any help appreciated and glad to be a member. Thanks for reading.



    2. #2
      What's wrong with my car?
      Join Date
      Sep 2018
      Location
      Michigan
      Posts
      6
      Thanks
      0
      Thanked 2 Times in 2 Posts
      Not the tstat, replaced and still have same issue. Found resevoir cap loose again while doing driving diagnostics. Gonna replace that next. On a side note i took both heater core hoses apart from the heater core and only received flow while raising the rpms to around 3500. I think there should be some flow even at idle if pump is working correctly. Yet sitting at idle is when the temps run the lowest.

    3. #3
      What's wrong with my car?
      Join Date
      Sep 2018
      Location
      Michigan
      Posts
      6
      Thanks
      0
      Thanked 2 Times in 2 Posts
      Can someone tell me what the normal operating temps are for this sedan lt? The new tstat opens at 221 degrees.



    Similar Threads

    1. 2007 Aveo slow to heat up or won't heat up at all
      By tntdynamite in forum Technical
      Replies: 0
      Last Post: 12-30-2015, 04:12 AM
    2. Aveo Gas Mileage - Good then not so Good
      By whitefish in forum Fuel Economy
      Replies: 23
      Last Post: 10-13-2014, 07:11 PM
    3. 2004 aveo stalls while driving then restarts and runs fine-
      By tster22 in forum Troubleshooting and Maintenance
      Replies: 4
      Last Post: 11-02-2012, 06:50 PM
    4. Replies: 4
      Last Post: 06-11-2012, 02:39 PM
    5. worse then snakes on a plane?
      By y2dgone in forum Open Forum
      Replies: 3
      Last Post: 05-21-2009, 02:20 AM

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •