1999 Oldsmobile Aurora backfire noise and lag

1999 OLDSMOBILE AURORA
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CURTIS36
  • MEMBER
  • 2 POSTS
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
Jan 10, 2010 at 9:39 AM
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ERNEST CLARK
  • ✓ASE Certified Mechanic
  • 1,730 POSTS
  • ASE Certified Mechanic
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.
Jan 24, 2010 at 4:12 PM
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