HELP........Reduced engine power

[Rawb4291]

I have a 2010 Buick lacrosse cxl 3.0 that I have been trying to fix a P0092 problem. I had it scanned and it comes up as the fuel pressure regulator. The dealership said it was the high pressure fuel pump. I changed it twice and still have the same issues. I also changed out the throttle body. I get the reduced engine power while I'm pushing down the accel. It usually happens when I'm climbing a hill. Is anyone familiar with this problem or know what I can do to fix it?

 

[aiebenz]

Did you ever find the solution to this? I got the exact same problem and already replaced high pressure fuel pump, fuel sensor, throttle body.

 

[ultram]

P0092 is the pressure regulator

 

[aiebenz]

P0092 is the pressure regulator

Yes, I have replaced the fuel pressure regulator, fuel sensor, ecm, throttle body, no after market lighting, still getting the P0092 and p00C9.

 

[Jaycee96]

Yes, I have replaced the fuel pressure regulator, fuel sensor, ecm, throttle body, no after market lighting, still getting the P0092 and p00C9.

I have the same issue with my 2010 Buick Lacrosse Cxl. Have spent lots of money chasing this problem . I'm done buying GM, Buick.

 

[Globetrot1]

I have the same issue with my 2010 Buick Lacrosse Cxl. Have spent lots of money chasing this problem . I'm done buying GM, Buick.

Certain problems seem to go with certain generations of LaCrosse/Allure.

While different issues, I'm tired of replacing door lock actuators and bearing hubs. My '92 Regal didn't have these issues, but then it didn't have much in the way of power options.

I'm with you on the last part, about possibly being done buying GM. I don't want a Camaro or a Corvette and I really can't afford a Cadillac, yet I will want a regular passenger car, so they're not giving me many options.

 

[2007LucerneCXL]

Not promoting Hyundai, oh I know I will get some crap about this, but a good friend just got a engine replacement at 100K at no charge on his daughter's Hyundai Sonata. Had a oil consumption issue which was reported prior to 100K but it was over 100K at time of replacement. If GM doesn't want to make car's and a SUV isn't the vehicle of choice well it's GM's loss.

As a note before the buy America cry comes out, check the country of origin on where the current Buick vehicles come from.

 

[Lawman]

I have the same issue with my 2010 Buick Lacrosse Cxl. Have spent lots of money chasing this problem . I'm done buying GM, Buick.

 

[Lawman]

I have the same issue with my 2010 Buick Lacrosse Cxl. Have spent lots of money chasing this problem . I'm done buying GM, Buick.

Did you ever figure this problem out? I have the same thing.

 

[nwellstech]

I have the exact same 2 codes on my Regal. Hopeful to revive this.

 

[ACEPA]

I have a 2010 Buick lacrosse cxl 3.0 that I have been trying to fix a P0092 problem. I had it scanned and it comes up as the fuel pressure regulator. The dealership said it was the high pressure fuel pump. I changed it twice and still have the same issues. I also changed out the throttle body. I get the reduced engine power while I'm pushing down the accel. It usually happens when I'm climbing a hill. Is anyone familiar with this problem or know what I can do to fix it?

Aheads up read my story after a year of strange codes and changing my oxygen sensors, throttle body, throttle pedal and battery the ECU had gone bad and was misreading all my sensors. $172 plus software upload with an ECU from Mintt fixed my Lacrosse. The rare lesson learned here is don't believe the ECU tells the truth. Scanners read the same corrupt data.

 

[PulpFriction]

No, P0092 is not necessarily the fuel pressure regulator. It’s high voltage in the circuit. Possibly a short in the wiring. Try barking up that tree.

 

[nwellstech]

I hooked up an OBD reader and configured the Dash Command app to show fuel pressure for both the low pressure and high pressure sides. I noticed only ~400psi on the high pressure side at idle indicating there was a problem wrong with the high pressure fuel pump. Normal range on high-side is ~750 @ idle. Dealer confirmed, replaced the high pressure fuel pump and now the Regal is back up and running code free.