Will not stay running

Tiny
THOMAS32
  • MEMBER
  • 2003 BUICK CENTURY
  • 90,000 MILES
2003 buick century will not stay started just replaced fuel pump and battery keeps dying out on start what could it be or what can I try plus a new relay put on it. Car just died out while I was driving and will not start back up
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Saturday, April 14th, 2012 AT 2:50 AM

17 Replies

Tiny
ASEMASTER6371
  • EXPERT
Have the fuel pressure checked with a gauge. See if you have spark as it may be a module breaking down or a cran sensor.

Roy
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Saturday, April 14th, 2012 AT 2:53 AM
Tiny
THOMAS32
  • MEMBER
Thanka alot but may I ask where is the cran sensor located at and is the module the brain to the car called the ecm and is the pressure suppose to be at 40 psi
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Saturday, April 14th, 2012 AT 2:50 PM
Tiny
ASEMASTER6371
  • EXPERT
Pressure 40 lbs, good.
Crank senswor is behind the harmonic balancer and the module is under the coil. The pcm is inside the car.

I would not throw expensive parts at the car without someone identifying the failure. You could spend 1000 in guesses that may not work.

Roy
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Saturday, April 14th, 2012 AT 7:39 PM
Tiny
THOMAS32
  • MEMBER
Ok the psi is not going past 9 with the fuel pressure check what does that sound like
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Saturday, April 14th, 2012 AT 10:52 PM
Tiny
ASEMASTER6371
  • EXPERT
Either a bad connection, bad ground or bad pump. What kind of pump did you use?

Roy
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Saturday, April 14th, 2012 AT 10:54 PM
Tiny
THOMAS32
  • MEMBER
The upgraded version that buick got, got it from auto advantage it is the wide four pronge now, buick no longer have a three prong
its cranking but will not turn over and stay started
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Saturday, April 14th, 2012 AT 11:46 PM
Tiny
ASEMASTER6371
  • EXPERT
Did you check the other things I asked?

Roy
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Sunday, April 15th, 2012 AT 12:02 AM
Tiny
THOMAS32
  • MEMBER
No not yet its raining hard out side but I will check in the morning, where might the bad connection be meaning area and I will also check the ground if thats not it what else might I check also thanks alot for the response I will start workin on it at 9:00 am I will post a message back soon as iam done to give results
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Sunday, April 15th, 2012 AT 12:05 AM
Tiny
ASEMASTER6371
  • EXPERT
Lets confirm this basic stuff first.

Roy
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Sunday, April 15th, 2012 AT 12:09 AM
Tiny
THOMAS32
  • MEMBER
Thank you will do
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Sunday, April 15th, 2012 AT 12:13 AM
Tiny
THOMAS32
  • MEMBER
Olk did everthing took o2sensor off car starts up but when pushing throttle body car sounds to be wanting to die or cut off
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Sunday, April 15th, 2012 AT 4:44 PM
Tiny
ASEMASTER6371
  • EXPERT
Why did you take off the o2 sensor?
You may have a bad cat converter if it runs because you just gave the exhaust somewhere to go.

Roy
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Sunday, April 15th, 2012 AT 4:46 PM
Tiny
THOMAS32
  • MEMBER
Just to see if it runs it starts fine now but pushin on throttle will not let me roar the engine do u think it will run right for now or go agian and buy a Cadillac converter
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+1
Sunday, April 15th, 2012 AT 5:04 PM
Tiny
ASEMASTER6371
  • EXPERT
No, without the sensor there is no fuel control.

Roy
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Sunday, April 15th, 2012 AT 5:28 PM
Tiny
THOMAS32
  • MEMBER
So what's next buy cat converter replug the sensor back up and it'd start but still will not hold
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Sunday, April 15th, 2012 AT 5:49 PM
Tiny
ASEMASTER6371
  • EXPERT
I really dont know. Going on what you have said, it may or may not be the issue. We are guessing here from info provided. Before you spend hundreds of dollars on a cat. You should have someone verify our findings.

Roy
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Sunday, April 15th, 2012 AT 6:12 PM
Tiny
THOMAS32
  • MEMBER
Ok can I try and drive it to auto zone and get a trouble code
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Sunday, April 15th, 2012 AT 6:18 PM

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