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2003 Buick LeSabre Won't Start

I have a 2003 Buick LeSabre that would not start. I changed the fuel rail and got it to start, but it would stall right away. I unplugged the mass air flow sensor, and it would run without stalling, but it would run rough. The next day, I tried to start it again, and now when you turn the key, all of the power cuts out, just like it would if the battery connection was loose, but it's not. I changed the mass air flow sensor, but it wasn't starting before I changed it.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1999 pontiac grand prix . will not run

If wiggling the wires cured the code, then one of the wires is broken inside the insulation. Pull on each wire one at a time. look for the colored insulation to stretch, this will be the broken wire. For the other car that wont rev up, this is a common when the catalytic concverter is plugged up. This will also cause MAF codes, and in turn, TRAC OFF light.
See http://www.greatautohelp.com

Posted on Oct 17, 2008

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  • 15 Answers

SOURCE: 1995 safari van w stalls when giving it gas.

maybe your iac valve is not working? it takes place of a choke or temp sender to computer could be bad which controls t I.A.C. known as the idle control valve,do you have any codes?

Posted on Sep 01, 2009

  • 196 Answers

SOURCE: 97 buick lesabre 3.8 Idles rough and stalls out.

ignition system not operating properly ,or intake air leak ...crank engine get a can of staring fluid spray around the intake if the motor idles up you got a leak hope this helps

Posted on May 08, 2010

honeymokey
  • 3113 Answers

SOURCE: 1994 LeSabre: My 1994 Buick Lesabre is stalling out when the eng...

Replace crank sensor

Posted on May 31, 2010

J-Chris Ward
  • 731 Answers

SOURCE: My 86 300zxt starts then stalls right away, it has

There is a two terminal key switch on some Nissan's has start and run. The start is sending power to the coil when the key goes back to run there is no power getting to the coil. And some cars have a relay on the fuel circuit that primes the throttle body and turn fuel pump on after the car starts which might not be happening.

Posted on Feb 01, 2011

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1 Answer

My 97 buick lesabre starts m runs fine once it warms up it boggs n stalls why


check your fuel pressure sensor, that is located on your fuel rail. it would have a vacum hose to the top of it. cause it would cause it to give it plenty of gas upon start up (like a choke) but fails to stop feeding it so much fuel once it warms all the way up. just a suggestion.

Apr 19, 2012 | 1997 Buick LeSabre

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How to check the fuel relay system


Sounds like u are loosing fuel pressure. a fuel pressure test would have to be done to confirm this, but sounds like the rail is not holding pressure. is the car hard to start or take quite a few cranks to start.?

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My 2000 buick lesabre want start fuel pump comes on when i turn the key i have spark at the coils.checked all fuses. Changed fuel filter but car still won't start its trying to start but just...


It could be the fuel pump. Sometimes you can hear them engage, but they are not pushing enough fuel pressure to run the car. This can be checked.

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I would check for gas at the pressure fitting on the fuel rail for gas. Also check to see if you are getting spark to the plugs.

May 17, 2010 | 1994 Buick LeSabre

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check the key my sure the programme is still good

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Where is the fuel filter located at on a 94 buick lesabre? the car will drive for a bit then stop but will start right back up and then go a little bit then die again


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Apr 14, 2009 | 1994 Buick LeSabre

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My 97 buick runs cold stalls when hot wont start for 1 hour


Sounds like it is fuel related. Ck fuel pressure to be sure. Also ck the pressure regulator on the fuel rail, It is a small metal cylinder at the end of the fuel rail to ck pull to vacumn line off (hot not running after shutting the engine off). If there is fuel in the vacumn line it is bad. Good luck

Dec 23, 2008 | 1997 Buick LeSabre

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