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1999 Oldsmobile Aurora backfire noise and lag

Tiny
CURTIS36
  • MEMBER
  • 1999 OLDSMOBILE AURORA
Engine Performance problem
1999 Oldsmobile Aurora V8 Front Wheel Drive Automatic

the car makes a backfire noise when a load it present.
ex: brake pedal pressed while gas it pressed
local mechanic said my converter sounded salted so replaced it and to no avail so he said it could be a stuck valve but I have ran injector, fuel, sea foam cleaner through the vehicle many times but to no avail still
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Sunday, January 10th, 2010 AT 9:39 AM

1 Reply

Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
You can have a clogged converter (Never heard of salted). This will give you a sever performance lag and a backfire.

You may also have a leaking fuel pressure regulator, stuck /leaking injector. Those injector cleaning products do not work. PERIOD.

The only ones that work are the professional strength that requires a mechanic to install.

If I've helped you, please vote for me, as I depend on this to pay my bills. Thanx, Ernest.
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Sunday, January 24th, 2010 AT 4:12 PM

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