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Chevrolet TrailBlazer Start Stall and Idle Problems

71 messages,  Last post on Jun 26, 2009 at 9:13 AM

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#62 of 71 loss of power when I turn on the defrost by steelerfan7 Dec 11, 2008 (5:10 am)
I just replaced my battery and next day if I'm driving with the defrost on it stalls when stopped at light etc... also when in park and defrost is turned on power is reduced. Have a 2002 TB. It doesn't lose power when other climate control features are on only with the defroster. Thanks for any help. Replies to this message: burdawg (Dec 11, 2008 6:41 am) steelerfan7 (Dec 11, 2008 6:57 am) leblanc5 (Jan 02, 2009 12:15 pm)
#63 of 71 Re: loss of power when I turn on the defrost [steelerfan7] by burdawg Dec 11, 2008 (6:41 am)
Replying to: steelerfan7 (Dec 11, 2008 5:10 am) When the defroster is on the A/C compressor is engaged to dry the air. Sounds to me like the idle control is not working properly, causing the idle to slow when the compressor is engaged to the point that it will stall. I assume that when not idling all is well? Replies to this message: steelerfan7 (Dec 11, 2008 6:57 am)
#64 of 71 Re: loss of power when I turn on the defrost [burdawg] by steelerfan7 Dec 11, 2008 (6:57 am)
Replying to: burdawg (Dec 11, 2008 6:41 am) WELL WHEN I WAS DRIVING WITH THE DEFROST ON IT SEEMED AS THOUGH THE ACCELERATION WAS CHANGING ON ITS OWN , (WASN'T CHANGING MY GAS PEDAL PRESSURE) THE ACCELERATION WOULD GO UP AND DOWN AS I DROVE . HOWEVER IT SEEMS FINE WHEN THE OTHER CLIMATE CONTROLS ARE ON, SUCH VENTED HEAT. ALSO NO PROB WHEN THE RADIO IS ON. THANKS FOR ANY HELP
#65 of 71 followup from steelerfan7 by steelerfan7 Dec 12, 2008 (9:37 am)
well we had the alernator checked and that seems to be fine so still no luck figuring out why my rpm's drop when the defrost is turned on in park and if i'm in drive at a stop light etc.. the car will stall. seems to be okay when not running the defroster any ideas out there.   thanks
#66 of 71 Won't start but full power to everything. by ppilkington Dec 17, 2008 (6:00 am)
I have a 2003 Trailblazer with a 4.2. It has been running like a champ, but yesterday morning i went to start it turned the key and everything came on, but no cranking. So i started reading on here what to look at. I changed the starter relay no luck. I went and bought a new ignition switch, and as i was pulling the column apart i tried to start it and it worked. So i tried to get it into drive but no luck, just stuck in park. No clicking when i hit the brakes or anything. So i went ahead and changed the Ignition Switch anyway got it all back together started fine. Tried to get it into drive, reverse, neutral, or anything and it will not budge. I shut it off after a couple of tries and then it did the not starting thing again. I tried unplugging the battery and leaving it all night. I can start it now, but still can't get it out of park.   I don't think that the ignition switch was bad i think something else is going on. No way that my brake switch and ignition went out over night. Anyone else have resolution to their issue. The truck seems to start kind of funny at first but idles and stays running. Replies to this message: ppilkington (Jan 13, 2009 8:25 am)
#67 of 71 Re: loss of power when I turn on the defrost [steelerfan7] by leblanc5 Jan 02, 2009 (12:15 pm)
Replying to: steelerfan7 (Dec 11, 2008 5:10 am) How did you resolve the problem? I'm having the same problem after changing the battery
#68 of 71 Re: Won't start but full power to everything. [ppilkington] by ppilkington Jan 13, 2009 (8:25 am)
Replying to: ppilkington (Dec 17, 2008 6:00 am) Just to update everyone. I just fixed the mess, i wasted a little money troublshooting but i got to the bottom of it. I replaced my ignition switch and relay, it started. Well 1 week later it started acting up again. I check my starter and the solenoid was acting up. I checked on the price of a new start because orielly's couldn't get just the solenoid. They were $185, so i called around and found a place that rebuilds starters and alts. Picked up a rebuilt solenoid for 20$. The problem is there are some torkex holding it on and they are right up against the casting. I got one out took it to MFA and got some Allen heads that would work and put them on it. Fixed trailblazer has been running good for 2 weeks now. I will keep you guys posted,
#69 of 71 Re: Engine won't turn over....everytime [iamcanadian_eh] by gonzofulda Feb 02, 2009 (3:51 am)
Replying to: iamcanadian_eh (Jan 16, 2007 7:24 pm) hi i have the same problem.i have a 2003 t blazer lt. i had the battery checked,even took it in the shop. they put it on a scope,they started twenty times and nothing. charged me 37.50 i was thinking it was a loose wire to starter or loose or bad relay well wouldnt you u know it the very next day it wouldnt start. to my luck this place was not open on the weekend. so the next time he told me to have it towed to the shop and he would take a look.yea ur right if i let it sit for a couple of hrs then it will fire up (strange). oh i glad to see that edmunds took the time to put this page together.
#70 of 71 Odd Start by kbt Jun 25, 2009 (1:32 pm)
Our TB recently started not starting. No amount of waiting in between solves the problem. Radio, lights, displays all work, key turns but nothing happens, no click. Just doesn't start.   However, without fail, if you make a call on your cell phone while turning the key, it starts right up. We haven't needed it lately, so I haven't taken it to the dealer yet, but I'm trying to get a sense of what it could be before I go in.   Any clues why the cell phone does the trick? Replies to this message: burdawg (Jun 26, 2009 9:13 am)
#71 of 71 Re: Odd Start [kbt] by burdawg Jun 26, 2009 (9:13 am)
Replying to: kbt (Jun 25, 2009 1:32 pm) Is it at all possible that while your holding your phone you put different pressure on the key, such as holding at a different angle while turning it to start, than you do when you try starting it without using the phone? I ask because it may be possible the ignition switch is getting worn. Do you have a lot of weight hanging on the key?

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