•  
    Page 1 of 2 12 LastLast
    Results 1 to 10 of 11

    Thread: tensioner pulley broke but timing belt still intacted, question on motor???

    1. #1
      What's wrong with my car?
      Join Date
      Mar 2012
      Location
      maine
      Posts
      2
      Garage empty: add car
      Thanks
      0
      Thanked 0 Times in 0 Posts

      tensioner pulley broke but timing belt still intacted, question on motor???

      hey everyone, i have a standard 2005 chevy aveo ls, the other day i was going down the highway (70mph) when i heard a grinding noise and my car died, after having it towed home and checked out i was told it was the starter so i replaced it, didnt start, we thought maybe it jumped timing so as we were checking it we noticed the tensioner pulley was snapped in half but the timing belt wasnt broke and it did not jump timing, i know these have the interference engine so im a bit concerned on the damage that may have been done, does the tensioner pulley cause major damage when it breaks? i know what could possibly happen when the timing belt goes. has anyone had this happen before? this is our only car other than my 71 chevelle but thats not much of a winter car haha!



    2. #2
      Almost time to do my timing belt daug1502's Avatar
      Join Date
      Jul 2010
      Location
      Iowa, USA
      Posts
      1,050
      Thanks
      0
      Thanked 2 Times in 2 Posts
      Check your valves. IF the tensioner snapped then the belt probably wasn't staying where it belonged either. I would treat the car as though the belt snapped anyway, and diagnose from there.
      http://www.aveoforum.com/phpBB3/view...p?f=41&t=28184
      2008 Aveo5 SV

      I will think of a better signature later.

    3. #3
      Timing belt broke, do I keep it? thehunterooo's Avatar
      Join Date
      Mar 2009
      Location
      Tampa and Orlando
      Posts
      4,359
      Garage empty: add car
      Thanks
      0
      Thanked 4 Times in 4 Posts
      +1 on checking the valves, and I would replace the timing belt and all pulleys anyways while you are at it, a good mechanic or yourself can have it all done in a day so it can be back on the road.

    4. #4
      Lifetime owner
      Join Date
      Sep 2008
      Location
      Pittsburgh
      Posts
      8,013
      Garage empty: add car
      Thanks
      2
      Thanked 170 Times in 141 Posts
      tensioners cause the belt to fail almost as often as the belt failing on its own.

      your easiest solution to this is to fix the tensioner and timing belt (do it all, water pump too), and see if it runs. give it a compression or cylinder leak down test, to see if the valves were damaged.


    5. #5
      What's wrong with my car?
      Join Date
      Mar 2012
      Location
      maine
      Posts
      2
      Garage empty: add car
      Thanks
      0
      Thanked 0 Times in 0 Posts
      after looking at a diagram of the timing belt assembly i notice that it is not the tensioner pulley that broke but it was the plastic idler pulley, can this do just as much damage to the motor? little concerned since i was doing 70mpg on the highway.

    6. #6
      Lifetime owner
      Join Date
      Sep 2008
      Location
      Pittsburgh
      Posts
      8,013
      Garage empty: add car
      Thanks
      2
      Thanked 170 Times in 141 Posts
      its about the same concern, same solution.


    7. #7
      Almost time to do my timing belt NYChevoo's Avatar
      Join Date
      Apr 2008
      Location
      Brewster,NY
      Posts
      1,811
      Thanks
      1
      Thanked 0 Times in 0 Posts
      +1 on that petrified.rabbit!
      Missing our beloved 1st gen Aveos everyday!
      Silence is golden. Duct tape is silver!!
      04 Aveo (mine gone but never forgotten)
      07 Aveo 5 (wifes car gone but never forgotten)
      02 Suburban (Eats gas stations as snacks)
      12 Cruze Eco 6MT
      (46mpg daily? Holy crap!)
      12 Sonic 2LT (Wifeys new wheels)

      Chevoo-1/2 Chevy, 1/2 Daewoo. I mean like WTF?

    8. #8
      Should I keep it? Aveowego's Avatar
      Join Date
      Feb 2012
      Location
      Montana, USA
      Posts
      46
      Thanks
      0
      Thanked 0 Times in 0 Posts
      I guess my question would have to be how do you know the belt didn't jump time if the tensioner broke? I would almost have to assume if the tensioner broke the crank spun the excess out. I've never seen it happen on an aveo motor yet. I have seen it on other 4's though and I would say, expect the worst. The grinding noise is usually you cam spinning free knocking the valves against the pistons or each other, and sometimes chewing the lobes off the cam or at least eating chunks out of it. I am for your sake and wallet hoping that's not the case. Make sure to go through petrifieds list. and while you've got the valve cover off, look for loose metal or anything bent, broken, chipped, warped, or knicked. I pulled the valve cover off my friends talon after a tensioner break. We managed to save the block luckily. The head didn't make it.

    9. #9
      Timing belt broke, do I keep it? thehunterooo's Avatar
      Join Date
      Mar 2009
      Location
      Tampa and Orlando
      Posts
      4,359
      Garage empty: add car
      Thanks
      0
      Thanked 4 Times in 4 Posts
      A talon that does not ever want to run, what is new??

    10. #10
      Should I keep it? Aveowego's Avatar
      Join Date
      Feb 2012
      Location
      Montana, USA
      Posts
      46
      Thanks
      0
      Thanked 0 Times in 0 Posts
      lol tell me about it I have a 90 eclispse a 91 talon and a 92 laser all awd turbos, 2 of them are in the back yard in pieces atm lol.





    Page 1 of 2 12 LastLast

    Similar Threads

    1. Timing Belt Tensioner
      By johnygogo in forum Engine & Drivetrain
      Replies: 13
      Last Post: 10-29-2014, 07:32 AM
    2. Replies: 8
      Last Post: 02-17-2012, 06:01 AM
    3. parting out 2004 chevy aveo (timing belt broke)
      By stepj19 in forum For Sale / Wanted
      Replies: 30
      Last Post: 09-03-2011, 09:56 PM
    4. Serpentine belt tensioner pulley removal HELP!
      By italsupra10 in forum Engine & Drivetrain
      Replies: 4
      Last Post: 02-09-2011, 02:13 AM
    5. changing belt question-tensioner
      By y2dgone in forum Engine & Drivetrain
      Replies: 9
      Last Post: 02-19-2007, 08:55 PM

    Posting Permissions

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