Question about 2005 Buick LaCrosse

Why does lacrosse idle rough

When I start the car, after it kicks down it is rough and shakes the car! Also while driving and let off gas it does it! It also has an egg smell?

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Ricky Peters

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2,620 Answers

Sounds like you may have bad fuel pressure regulator

Posted on Nov 02, 2011

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I have 2003 2500hd 60eng always sound rough has bad gas smell for about 4min then run fine it started moved about 50 ft an quit now will not start change gas &fuel filter still will not start

Rotten egg smell ? If yes, might want to check for codes and for proper o2 sensors.

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When I drive my Bmw 323I E90 is shaking after driving for 500m, and then it dont want to drive fast because of the shaking. It also gives a rotten egg like smell. Whats the problem

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We will need a better characterization of the "shaking" to help you solve it. Does the shaking stop when you stop, or does it continue? If it stops, it's either in the drivetrain or wheels. If it doesn't stop, engine or trans.

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The obd light with tell specifically what it is, is it gas or rotten egg - the latter means catalytic converter, gas smell probably flooded or not firing on one or more cylinders, need more details. Also, if the light is flashing it's warning of catalytic damage - raw fuel hitting the cat, smell could be heat from cat trying to burn off raw fuel,it will glow red hot.

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For the RPM's jumping up and down i would replace the throttle position sensor. If it smells like bad gas or rotten eggs these are signs that the cat. converter is going bad. For the poor gas mileage replace the fuel filter.

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Usually the rotten egg smell is a clogged CAT. Is the engine light on and if so did you retrieve any codes?

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I was driving and something poped and it started shaking and had a rotin egg smell coming of the back end

check u catalytic converter starting to go bad(plug up)the c/c gives off a rotten egg smell when going bad

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I have 2003 2500hd 60eng always sound rough has bad gas smell for about 4min then run fine it started moved about 50 ft an quit now will not start change gas &fuel filter still will not start

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Why does lacrosse idle rough

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Related Questions:

I have 2003 2500hd 60eng always sound rough has bad gas smell for about 4min then run fine it started moved about 50 ft an quit now will not start change gas &fuel filter still will not start

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Why does lacrosse idle rough

1 Answer

Ricky Peters

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Related Questions:

I have 2003 2500hd 60eng always sound rough has bad gas smell for about 4min then run fine it started moved about 50 ft an quit now will not start change gas &fuel filter still will not start

When I drive my Bmw 323I E90 is shaking after driving for 500m, and then it dont want to drive fast because of the shaking. It also gives a rotten egg like smell. Whats the problem

Obd light on, idle rough, smell, no throttle

Engine stalling

2000 maxima smells like eggs and vibrates at stop sign service engine light is on'

My engine shakes with smell of rooten egg

Rough start, smell gas

Rough idling, poor gas milege

I was driving and something poped and it started shaking and had a rotin egg smell coming of the back end

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Not finding what you are looking for?

2005 LaCrosse

I have 2003 2500hd 60eng always sound rough has bad gas smell for about 4min then run fine it started moved about 50 ft an quit now will not start change gas &fuel filter still will not start

Open Questions:

2005 buick lacrosee turns over but will not start. run fine last night

Reset anti theft system on 2005 buick lacrosse

can anyone help me find torque specs for tie rod end inner and outer for 2005 Buick Lacrosse CXS?

My 2005 Buick lacrosse and and tc lights on the dash come on. If restart car lights go out Will come on orbit bump

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