- #1 of 21
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Suburban dies while driving HELP!
by posh
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Sep 05, 2007 (6:20 pm)
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I have a 2003 Suburban LT and it has started to die while driving and the Air Conditioner stops blowing cold air and the air gets hot as if the A/C weren't on. I have replaced the battery and have had the alternator checked, it's not the battery or the alternator, does someone know what it might be? I have a teenage daughter that uses this car and I would hate for it to break down while she is driving. Please help me someone. Thanks so much
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- #2 of 21
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Re: Suburban dies while driving HELP! [posh]
by tidester HOST
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Sep 05, 2007 (7:30 pm)
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Replying to: posh (Sep 05, 2007 6:20 pm)
It's probably to be expected that if the engine stops running then the AC compressor will also stop.
Does the engine cut off abruptly? Do you hear any noise? Feel any vibrations, jerky motion? Do you see a change in the exhaust?
tidester, host
SUVs and Smart Shopper
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- #3 of 21
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Re: Suburban dies while driving HELP! [tidester]
by posh
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Sep 05, 2007 (8:34 pm)
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Replying to: tidester (Sep 05, 2007 7:30 pm)
Hey, thanks for the reply. None of those things have happened, or I have not noticed, but an example is driving down the street the car just died, nothing really changed and another example is while driving the car there was a sudden shift on the battery odometer, like it went from 14 down to 12 and then back up again, and if the car is on sitting idle and everything is on it struggles to stay on and then if you turn everything off it seems to be okay. The battery is brand new so it can't be the battery, right? Thanks so much for your help. Posh
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- #4 of 21
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Re: Suburban dies while driving HELP! [posh]
by tidester HOST
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Sep 05, 2007 (8:52 pm)
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Replying to: posh (Sep 05, 2007 8:34 pm)
I'm no expert but my first guess would be that it is something electrical. It could be your alternator (which would affect the battery, by the way!), the ECU (electronic control unit) or a bad electrical connection somewhere. Anyone else have any ideas?
tidester, host
SUVs and Smart Shopper
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- #5 of 21
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Re: Suburban dies while driving HELP! [tidester]
by posh
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Sep 05, 2007 (8:54 pm)
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Replying to: tidester (Sep 05, 2007 8:52 pm)
I had the alternator checked and it was fine, I took it to a auto parts place and they hooked it up to check it out and the guy said it was fine. I am really at a loss, any information would be greatly appreciated. Thanks so much for your help, tidester, I'm just a lady with a problem. Ha Ha
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- #6 of 21
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95 Suburban engine stops while driving
by antzamora
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Sep 19, 2007 (11:56 am)
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All of a sudden on highway engine stopped. Battery is fine because all power still works. After waiting ten minutes or so will start again only to drive a few miles and engine stops again. Any clue?
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- #7 of 21
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Re: 95 Suburban engine stops while driving [antzamora]
by wrenchbender1
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Oct 22, 2007 (8:03 pm)
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Replying to: antzamora (Sep 19, 2007 11:56 am)
I am working on a 95 with a 5.7 engine. It is an OBD1. I first found I had only 16 psi. fuel preasure. I changed the pump and now have 65 psi. It will run 2-3 minutes and die. let it cool a bit and again it will run a bit and die. The injectors just shut off. I can pour fuel into the intake and it will run. There are no codes being logged. This tells me that it must be a mechanical problem that OBD1 did not recognise. A dealer told me to change the engine control box. I have one on the way and I'll let you know if it works.
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- #8 of 21
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Re: 95 Suburban engine stops while driving [wrenchbender1]
by wrenchbender1
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Oct 23, 2007 (4:55 pm)
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Replying to: wrenchbender1 (Oct 22, 2007 8:03 pm)
Well the brain box seems to have cured the problem. I let it run 45 minutes. Before it would only fun a few minutes before it died. So I gues I cross my fingers and see what happens.
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- #9 of 21
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Re: Suburban dies while driving HELP! [posh]
by dee23
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Nov 10, 2007 (11:38 am)
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Replying to: posh (Sep 05, 2007 6:20 pm)
I Had same problem with the ac unit... on 95 degree day teh ac decided to get stuck on heating us to like 95 degrees. even turnign off the blower didn't work it still blew hot air at us... we turned car off and went to have dinner, (in middle of nowhere), we got back in and was fine. THen a year later and this cycle repeats itself. We had the brain of unit replaced and seems fine now. THe battery accelerator actuator has another problem, separate issue. It actually drains the battery, so like myself you just went out and bought new battery, this problem of frayed wires that the GM distributor KNOWS about, drains your brand new battery, and even with a jump you have no or extremely reduced engine power, (even says so in dash message)... Frayed wires are the issue, I just want to know how big of an issue, getting sick of wasting a lot of cash fixing problems the dealership is aware of and has handout from GM explaining. THey need to recall, it is dangerous to loose power! GO to a dealership and ask "SES Light and Reduced Engine POwer DTC p0120 etc..." it's a service package all dealerships have so they know what is going wrong.
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- #10 of 21
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Re: Suburban dies while driving HELP! [tidester]
by spence57
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Jan 22, 2008 (11:39 am)
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Replying to: tidester (Sep 05, 2007 8:52 pm)
My 03 suburban has a similar problem. I've posted several messages about it. Stumbling and poor idle can be caused by air or fuel starvation so make sure that those filters are OK. I think that my own problem is caused by dirt in the fuel tank plugging up the fuel intake screen. I think the dirt falls off when the engine is shut off. It's possible that a mechanic might replace the fuel pump in the tank without cleaning out the fuel tank and fixing the problem.
This doesn't explain why the car won't start after sitting 10 hours with less than a half tank of fuel and will start if the tank is banged on the bottom. I've done this for at least a year and a half and it works every time if you have some fuel. Possibly related is a recall I received for an instrument panel voltage problem. It causes gauges to read inaccuratly. Our fuel gauge level jumps a quarter tank at times. I wonder if the pump could be programmed to shut off with no fuel indication either to prevent burnout or to keep air out of fuel lines.
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