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My buick sky lark wont stay started when i try and start it it starts but shuts off right away i put new fuel pump new computer and everything else cant figure out the problem

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  • Buick Master
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Is the fuel pump relay working ?
Are you loosing spark or fuel pressure ?
The engine computer must see oil pressure or RPM to keep the pump relay on.

Posted on Apr 12, 2015

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6ya6ya
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Posted on Jan 02, 2017

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dustyboner
  • 331 Answers

SOURCE: 1991 honda civic wont start...

try checking the main relay



view larger picture

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Posted on Jul 10, 2008

  • 29 Answers

SOURCE: starts then dies

check your fuel pump relay 

Posted on Mar 06, 2009

kollak81
  • 11 Answers

SOURCE: i put a new fuel pump in and still wont start

ok if the fuel pump is energizing and you can hear it turn on then the pump is working fine and you probably have a restriction. i would replace the fuel filter. when you replace the pump did you replace the strainer on the pump? if not then thats where your problem lies. also could be the fuel pressure regulator also. there is a schrader port on the fuel rail try taking a pen and press down on the core to see if fuel squirts out. or connect a fuel pressure guage to the port and see if you have the right fuel pressure. it should run between 35 and 47 psi

Posted on Aug 09, 2009

czaa
  • 4536 Answers

SOURCE: i'm having trouble starting my

i dont want u to be a partz replacer like those dealership boyz-it could be that the fuel pressure regulator is bad-thats why repair manuals r so good-see u r gettin spark but the petrol not there-hopefully the pump was installed rite-now the regulator is in engine area n thats where to concentrate

Posted on Aug 16, 2009

  • 409 Answers

SOURCE: My 95 tahoe starts but

did you install the oil pressure switch origional to the tahoe? The tahoe uses a low oil pressure shutdown, instead of an inertia switch to shut off the fuel pump in the event of an accident. If the pressure circuit does not close within 3 seconds after the engine starts the fuel pump shuts off. This is in case the truck is on its side or upside down the pump will shut off.

Posted on Aug 20, 2010

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1 Answer

I have a 93 Ford F150 4.9 liter. And when I go to start it the fuel pump stays running for close to four minutes and then it will not start until the fuel pump shuts off?


OK, when you turn the key to on, it will start the pump for about 2 seconds-this is just to put pressure in the lines and in the fuel rail for easy starting. If key is not turned to start, pump will shut off after 2 seconds. But when cranking in start, and when engine is running, the pump is on full time.
If your pump runs longer than 2 seconds with key only in on position, you have a fuel circuit problem. It very well could be a bad fuel pump relay staying on. Or it could be a computer problem signaling the relay to stay on longer. Try a new fuel pump relay first and see if that was the problem.

Oct 07, 2016 | 1993 Ford F150 SuperCab

1 Answer

How do I get to pet cockon 1991 sky lark buick


You may not have one. Just remove the bottom hose, or remove the engine drain plug put a garden hose in your radiator idle the engine while adding water this will flush your whole system. let the car cool replace engine plug add your antifreeze and your set.

Oct 29, 2014 | 1991 Buick Skylark

1 Answer

Turns over,but wont start.


Did you check base fuel pressure with a gauge before and after replacing the pump ? Is the pump getting power from the relay ?
The fuel filter is under the car and should have been replaced with the pump.

May 15, 2013 | 1995 Buick LeSabre

1 Answer

Car will start right up when cold go down road dies starts back up once hot shut off starts back up let it set ten min. wont start has spark has fuel pressure put new fuel pump in old pump did same thing...


Could be a relay or other electrical issue.
You say it has fuel pressure and spark, if that were true it should run.
So it either does not have enough spark to fire the plugs under compression, or not enough fuel pressure going thru the injectors, or not at the right time.
You might want to check for trouble codes in the computer.
There has to be something missing from the equation when it won't start. You may have to check all of the plugs for fire and try some carb cleaner sprayed into the intake to boost fuel supply to find the issue.

Sep 20, 2012 | 1989 Buick Century

1 Answer

CAR RUNS GREAT.WHEN YOU SHUT IT OFF IT STARTS RIGHT BACK UP.BUT IF YOU SHUT IT OFF FOR 10 OR MORE MINS THEN TRY TO START IT .IT WONT START.I REPLACED THE FUEL PUMP AND CRANKSHAFT POSITION SENSOR.AFTER...


THE FUEL PUMP GOT TO RUN FOR 3 SECONDS WHEN YOU TURN THE KEY ON , MAKE SURE IT RUNS LISTEN IN THE TANK. IF IT DON'T YOU NEED A COMPUTER......DID YOU CHANGE THE FUEL FILTER ??CHECK IT....

Dec 20, 2010 | 1989 Buick Regal

1 Answer

My 95 tahoe starts but dont stay on. Fuel wont stay pumping from tbi. Just swapped a motor from 80's camaro. Was running real good in box chevy perfect. Now fuel wont stay flowing out of injectors. Already...


did you install the oil pressure switch origional to the tahoe? The tahoe uses a low oil pressure shutdown, instead of an inertia switch to shut off the fuel pump in the event of an accident. If the pressure circuit does not close within 3 seconds after the engine starts the fuel pump shuts off. This is in case the truck is on its side or upside down the pump will shut off.

Aug 19, 2010 | 1995 Chevrolet Tahoe

1 Answer

Car wont start once ieng is shut off for 20mins or longer


this sounds like a defective fuel pump, but u will need to have the fuel pressure tested when it acts up to verify this is the issue 100%, the fuel pump is located inside the fuel tank.

May 19, 2009 | 2002 Buick LeSabre

2 Answers

Will start then dies


On the regals they have a ceramic resistor on the passanger side under the fender. It heats up and over time it tends to brake and the wire inside tends to rust away. The fuel pumps run in 2 different speeds. Had the same problem. Dealer only part yet the car would run and you would think it was the fuel pump. Turn the key it kicks on then start and dies out. Ceramic on the pass side would need replaced. It is white about 2-3 inches long or so held on with 2 bolts i do believe. Ill find a bulliten i found online to help me diagnos the problem. :) hopefully this helps someone out instead of spendin $$$ that ya cant afford with the recession eh?

Mar 07, 2009 | 1998 Buick Century

1 Answer

My car wont stay running


it could be the fuel pump not working right. you can buy an electric one and put on there and it will tell you right away if your original fuel pump is dead

Dec 29, 2008 | 2001 Volkswagen Beetle

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