Question about 1990 Buick Century

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1990 buick century limited

Car will start when cold after reaching operating temp car acts like its starved for fuel and dies wont restart warm. spark good after cool down will start again.

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  • Anonymous Jul 12, 2008

    Same problem. Like to hear answer

  • Anonymous Jul 12, 2008

    Same Issue. No Solution

  • ar307acorn Sep 10, 2008

    my 1991 buick century with 3.3 will start cold & run strong. if ishut it off when warm & restart, i may drive for a short distance & stall, or it may stall right away. it won't start again untill it cools down. today when it did this, i pushed the fuel rail schrader valve & only air came out. i keyed it up & pushed the valve & repeated until fuel came out. then it started & drove great all the way home. it already has a new fuel pump, new fuel pulsator, new fuel filter, new fuel regulator. with all the similar complaints on this site, you'd think someone would have a solution!

  • smileybob200 Oct 19, 2008

    I have a 91 buick century and I drained the gas from the tank and replaced the fuel pump and filter and I still have the same problem. It runs for about ten minutes then starts sputtering and shuts off and I cant start it again for about ten minutes. it acts like it is running out of gas. It is also blowing black smoke out the exaust pipe when it starts sputtering. I would appreciate some input on this since this is my sole transportation on a limited budget and cant afford to replace everything. Thanks Confused???

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  • 13 Answers

Have you tried replacing the pick-up coil?

Posted on Nov 03, 2008

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Check coolant temp sensor. If bad, it will make computer think the engine is still cold, causing excessive fuel delivery and flooding. These sensors can be removed and tested (see instructions in shop manual)

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Have you checked base fuel pressure with a gauge ?
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It sounds like the engine computer. Also check the resistance in the injectors and o-rings. O2 sensor and coolant temp sensor could give you a problem.

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What you need to do is when it stalls out then check to see if your loosing fuel or spark.Check for spark at the spark plugs.don`t just check one.Check all the front 3 a least.If no spark then you probably have a bad ignition module.It is under the coils.Good luck.

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Do the basics, you are loosing fuel or spark. When it dies, you need to quickly install a spark tester on one of your plug wires to see if you have spark while turning over engine, while it still won't start.

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The fuel injector motor or called the Idle Air control module is not the failure. The fuel pump is overheating and dies out. Thus when letting sit a while the engine is starting up again.
I woult take vehicle to local shop and have them replace the fuel pump , I suggest not getting taken for a complete tune up. Just the fuel pump is the most cost effective way .

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Any dtc's? Check fuel pressure and ignition spark...

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