2003 Oldsmobile Aurora loss of power/acceleration

Tiny
AURORAMAN
  • MEMBER
  • 2003 OLDSMOBILE AURORA
  • V8
  • 2WD
  • AUTOMATIC
  • 82,000 MILES
I have tried everything I have been told and my trouble still persists. My 2003 aurora has gradually started to lose power after I got my a/c fixed. Prior to that, it felt sluggish and I took it to the dealership. They say they discovered a crack in the intake and fixed it. After that, the car felt like new. My power had come back and I barely skim the gas and car pulled strong. But because of the heat, I got my a/c fixed, and gradually, the power started to fade to the point where uphill, the car decelerate and I have to press the gas hard so it could go, Changed the fuel filter about 4 month ago along w/ putting new spark plug( all 8). Coil pack front/back failed last year 's been changed. New air filter put.. Lastly I have clean my MAF and I noticed a slight increase when accelerating from a stop but only when the a/c is not running. I got a little more power when the a/c ain't running but I used to have power w/ a/c on when the a/c just got fixed for about a week before the power start decreasing.
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Tuesday, August 17th, 2010 AT 11:22 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Has the check engine light come on? Also, have you checked fuel pump pressure?
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Wednesday, August 18th, 2010 AT 11:28 PM
Tiny
AURORAMAN
  • MEMBER
No no engine light so far. The engine sounds good and the speed shifts correctly. But today, it seems like even with the a/c now off, the car still feels sluggish.
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Thursday, August 19th, 2010 AT 1:06 AM
Tiny
AURORAMAN
  • MEMBER
By the way, how could check the fuel pump pressure on my own. Hey but it seems like there was a recall on the fuel tank system assembly for my car of this year.I'm not the first owner, how can I check if this has been fixed before.W/ the dealer. Maybe that where the pb comes from?
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Thursday, August 19th, 2010 AT 1:09 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Here is a how to for checking fuel pressure. It will require a gauge, but most part stores will lend them to you.

http://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm

As far as the recall, take the car to a dealer and they will run the vin and know if the recall has been taken care of.

Let me know what you find.

Joe
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Thursday, August 19th, 2010 AT 8:29 PM
Tiny
AURORAMAN
  • MEMBER
Ok I will do so. But in the event I don't find any wrong with the fuel pump, regulator or filter, what would be the next step?
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Thursday, August 19th, 2010 AT 9:08 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Without the check engine light, it becomes a guessing game. If the engine is running sluggish, I have to ask when the last tune up was, is the catalytic converter starting to plug.
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Thursday, August 19th, 2010 AT 10:31 PM

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