Q: 2005 Buick park ave ultra with sluggish accelerations aftera catalytic converter swap full tune up fuel pump filter plugs both o
I have a 2005 Buick Park Avenue Ultra which has a rough idle and poor acceleration and sputters after 2000 RPM. at first inspection I noticed there was a base model fuel pump installed on a supercharged vehicle swap that out for the right one, then all o2 sensor after a cat swap which had completely failed. The ignition module n coils are new n have been tested. Even camshaft crankshaft sensor has been changed. Tps checks out no codes for maf sensor just downstream o2 sensor after about 30-40 minutes of driving likely due to how rich or lean the fuel eating IS off by . One strange thing I've noticed notice that the factory audio amp doesn't turn off with the key switch. Could I have a faulty ecm?
My car has 152250 miles.
My car has an automatic transmission.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
What others are asking
I am worried my airbags won’t work in a crash
As long as any new electrical gremlins that pop up are not related to the same passenger airbag circuit, I would doubt that this repair would cause new electrical issues. Ford has had this specific issue come up in the...
Losing oil, metal particles on filter, and bad gas mileage - 2014 Infiniti Q50
Hello. It is common for the this engine to use oil and get poor fuel mileage (https://www.yourmechanic.com/services/car-is-getting-worse-gas-mileage-inspection). Unfortunately, it is an inherent property for this model. As for the metal, this is not normal. If there is metal in the...
Does replacing power steering hoses cause any other issues to arise?
Hi there, thanks for writing in. That's an interesting point you bring up. In short, yes; sometimes when you replace one component another issue will arise because it was masked by the damage on the other part you replaced. This...
Gascap warning on 2007 Caravan
For the first issue, the gas cap will need to be replaced sometimes. I had a 2009 Dodge Charger that this happened to also. It's not something you can control. As for the second issue, it seems like it is...
I would like to know why my rear end shakes really bad at 55 mph
Hello, thank you for writing in. The vehicle is likely having an issue with the tires or suspension. Typically you start by testing the simpler possibilities and work your way to the more complicated fixes. With that said, one of...
My housing holes on my 2013 chevy Cruze bust and overheated now it will not start
Anytime an engine is overheated then you may damage internal engine components. Since you state the engine is seized then you may have blown a head gasket and one of the cylinders are full of coolant causing the engine to...
My 2000 nissan frontier hesitate on shifting , and stays with running with my foot off clutch in first gear
Hi there. On a manual transmission, most shifting problems are caused by a clutch failure or a gear failure. This is rather common for a vehicle that is more than 15-years old and over 250,000 miles. Trying to pinpoint the...
Car won't start w/brand new battery, But will when getting a jump from another vehicle...what could be possible issue(s)?
If the battery (https://www.yourmechanic.com/services/battery-replacement) is new and charged sufficiently (not all new batteries come fully charged), there should not be any problem starting the vehicle. You may want to be sure all battery cables are properly connected and that the...
My pontiac bonniville starts and goes into gears but wont move at all it just revs
Check the fluid level as very low fluid, or a clogged fluid filter, will result in no movement. If the fluid level is adequate, and there is no movement in any gear, the most common causes for that are: broken...
Related articles
A Buyer’s Guide to the 2011 Buick Lucerne
2011 2011 marked the final year of production for the Buick Lucerne, a venerable full-sized sedan that offers ample room in the interior. The car was noted for the significant amount of interior space and trunk space offered, although it...
The Best Used Cars to Buy for Short Commutes
If If you’re lucky enough to have a short commute to work, then you need to consider different factors when buying a used car than someone with a lengthier drive (or more time stuck in traffic). Chances are good that...
Understanding the Buick Oil Life System and Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Buick Oil Life System indicates when and what service your car needs.
Browse other content
Services
Maintenance
Cities