fuel pump replaced. Now no spark

Asked by Guru9Z7H81 Dec 21, 2020 at 11:36 AM about the 2000 Buick LeSabre Custom Sedan FWD

Question type: Maintenance & Repair

I have a 2000 buick lesabre. Had trouble with float sensor for the past couple
of years. then last week car was idling then just shut off. Replaced fuel pump.
Still wont start. Checked for spark and no spark. Fuses all checked out. any
suggestions?

1 Answer
27,540

oilyspill answered 3 years ago

the basics, make sure battery has a full charge and connections all good. Have a helper crank it while you visually check for spark at the plugs, use a gage and check proper fuel pressure and fuel injector pulse. Check for applicable trouble code. you always check for multiple issues. If you're missing everything, check for rpm signal, usually comes from crank sensor. I can't rule out the ignition module, at the moment. good luck

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