Fuel/motor

Asked by Jan 22, 2017 at 05:36 PM about the 1999 Buick LeSabre Limited Sedan FWD

Question type: Maintenance & Repair

I just replaced fuelpump it was
new and bad.had go bk and get
another. Put it on.it works.now the
problem I'm having is.it crank up
and run.get way s down road and
it dies.give it to much gas and it
dies.give it gas and have keep it
on3k rpm to get it going.it gets
going it good but not for
long.starts stalling again.it needs
intake gasket.but to me it seems
like its getting to much air.and
only things I can fig is its vac hose
leak.map or maf sensor bad or the
ecm.either way been u give it gas
or try after its crunk it wonts to
die.I came up steep hill yesterday
and it was cutting out bad.only
goin25mph.had keep foot on has
to make it.anyone can help me.plz
I'm open to all help thank you.

1 Answer

76,335

Yea you have vacuum leaks and by the sounds of it the biggest problem is the intake manifold gasket.

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