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Pontiac Aztek Thermostat Problems

38 messages,  Last post on Feb 07, 2009 at 3:18 PM

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#18 of 38 Transmission problems- whining and sluggish on the shifting sometimes by aamidei Aug 14, 2007 (6:08 am)
We bought out 2001 Pontiac Aztek new and love the size, comfort and headroom but we don't like the list of repairs we have had to do. We have 150,000 miles on the car, but we have been good at keeping up with all the maintenance as described and we still have had the following issues: Thermostat fixed twice under warranty but only worked for one season and then stopped. Blown head gasket at 73,000 miles New Sensor 9 I can't remember which one) New computer (just two weeks ago) Problems with the rear breaks leaking And now the car whines as you accelerate and it hesitates when it shifts.   I love the vehicle, but I don't think I would buy another because of all the EXPENSIVE issues we have had.   aamidei
#19 of 38 Re: All kinds of trouble with my 01 Aztek [littlemsrodeo] by bmurf1 Jan 07, 2008 (7:32 am)
Replying to: littlemsrodeo (May 25, 2007 7:12 pm) I, too, have had many of the same problems w/ my '03 Aztek. Most of all the brakes. After the warranty ran out I fixed the brakes myself. Cost me less than $200.00. It seems the calipers were on the wrong side, I don't know how they did it, but once I swapped them and put new rotors and pads on it hasn't been a problem since. That was in Jan '07. Plus, my tranny has been shifting hard. Does anybody know what might be causing this. Doesn't always happen but often. Oh!! My car is a lemon too!!!!!
#20 of 38 For all of those w/thermostat problems by bmurf1 Jan 07, 2008 (3:20 pm)
I just completed a thermostat removal and install of a new one. It took about 5 hrs. and a little aggravation, but all in all not bad. However I did not follow the instructions as set forth by mechanics or Pontiac repair manual. I discovered that you need only to remove the heat shield along w/some other minor disassembly and was completely successful. If you need more info please ask. Replies to this message: nad5 (Feb 16, 2008 9:18 am) maraztek (Oct 14, 2008 1:28 pm)
#21 of 38 Re: All kinds of trouble with my 01 Aztek [littlemsrodeo] by msiporin Feb 02, 2008 (8:38 am)
Replying to: littlemsrodeo (May 25, 2007 7:12 pm) I have a 2003 Aztek with pretty much all the same problems. I would be interested in a Class Action.
#22 of 38 Temp Gauge overheating by pappypooh Feb 15, 2008 (10:08 am)
Just recently I have had my 2001 Aztek giving me an Overheating warning light no service engin soon light came on. Well I had to pull over to let the car "cool" down and did this several times. I took it to the dealership that morning and they stated that i had a bad sensor. Well they went ahead and replaced the sensor and thermostat and flushed the radiator, Welll that was on Tuesday that I got my car back drove it that night and again i got the warning and this time the tempture gauge was moving up and down before it "overheated". So i took it back to the dealership and they stated it had air pockets from the flush. So Thursday it worked fine all day until Thursday night again it went inot the "overheating" state cold air was blowing from my vents. So I am now back at the dealership and very confused about what is going on with my car. Reading this I am hoping that I dont have to pay for the manifold.. ugh...
#23 of 38 Re: For all of those w/thermostat problems [bmurf1] by nad5 Feb 16, 2008 (9:18 am)
Replying to: bmurf1 (Jan 07, 2008 3:20 pm) How do I contact you to find out how you replaced your thermostat? I think ours is stuck shut and is overheating. We want to change it to see if that is all that is needed.
#24 of 38 Re: All kinds of trouble with my 01 Aztek [brooke71832] by kori Feb 25, 2008 (5:14 pm)
Replying to: brooke71832 (Feb 15, 2007 7:04 pm) I'm having the same problem with the cooling fan coming on after I turn off the engine and even if I'm idling for a little bit. I was told that it was the O2 sensor, but not sure how that would effect the heating system, that sometimes blows cold air unless it is full of coolant. Have you heard anything about the O2 sensor being bad? Has anyone? Replies to this message: ray80 (Feb 26, 2008 12:10 pm)
#25 of 38 Re: All kinds of trouble with my 01 Aztek [kori] by ray80 Feb 26, 2008 (12:10 pm)
Replying to: kori (Feb 25, 2008 5:14 pm) 02 sensors can go bad for sure, but it should illuminate the ses or check engine light. If you have to keep adding coolant, it may be overheating and that will cause the cooling fans to come on more often

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