Last post on Aug 02, 2011 at 4:53 AM
You are in the Buick LaCrosse
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Buick LaCrosse, Sedan
#2257 of 2335 Idling Issue
Aug 19, 2008 (7:53 pm)
I have a 2007 LaCrosse which has a standing idle of around 750 RPM. However, after accelerating over 25 mph, when I back off the accelerator, the engine returns to idle at about 1000 rpm. When I complained to the dealer, he said there is nothing wrong and that the idle settings are set at the factory. We test drove a different LaCrosse and after accelerating it returned to idle at 750 rpm so this is an issue peculiar to my car. I was wondering if anyone else had this problem. Also, my guess is that there must be some sort of idle control chip that regulates the idle which Buick should be able to replace. The dealer said that it cannot be done. Does anyone know if it is possible and how difficult it would be to replace whatever computer component regulates idle? I feel as if Buick is discounting my concerns over what to me is a safety issue since the increased idle is unexpected and requires additional braking pressure.
#2258 of 2335 Re: Idling Issue [dcs67]
Aug 20, 2008 (3:43 am)
Not as simple as a chip. It is all computerized and I doubt if you have something wrong with the software. Most likely one of the sensors is inaccurate or something mechanical is hanging up.
To be honest 750 vs. 1000 idle sure is not much. Amazed it was noticable.
Anyway the dealerships are independent from Buick. Go to another dealer.
#2259 of 2335 Re: whinning sound from engine bay [lacrossesoaked]
Sep 03, 2008 (4:03 am)
Yes...the whinning sound was due to my power steering resevoir being low on fluid. I was told this is a standard problem on most GM front wheel drive products. The seals start to "weep" slowly and due to the placement of the PS resevoir, not too many people tend to check the fluid level. It's not topped up and the whinning sound has disappeared.
#2260 of 2335 Re: whinning sound from engine bay [kairns]
Sep 03, 2008 (6:54 am)
OK, I will check the fluid level and for the sake of other forum users, I will post what I find out. Thanks very much !
#2261 of 2335 Re: whinning sound from engine bay [lacrossesoaked]
Sep 04, 2008 (2:14 pm)
I had this slight whirring sound on accleration in my 2006 CXS. When I check my power steering level with a hot engine, the fluid was just at the minimum level. The owner's manual states that it should be at Max with a hot engine and at Min with a cold engine. I added Power Steering Fluid and the sound went away. Thanks for the advice.
#2262 of 2335 Re: whinning sound from engine bay [lacrossesoaked]
Nov 08, 2008 (10:14 am)
When I checked the power steering fluid level, it was low. I brought it up to the correct level and the problem went away. That was six weeks ago.
This week, I took the vehicle in for normal service; asked them to check around the power steering for leaks; none found and the fluid level was still correct.
Nov 11, 2008 (8:46 pm)
anyone having trouble with the gas guage?
#2264 of 2335 Replace cabin air filter
Nov 19, 2008 (6:33 pm)
Does anyone know how to go about replacing the cabin air filter on a 2005 Buick LaCrosse. I had a 99 Buick Regal and the owners manual gave the complete procedure but I can't seem to find any info in my current manual.
#2266 of 2335 Re: Replace cabin air filter [lacrossesoaked]
Nov 20, 2008 (9:46 am)
Looks like the instructions I had for my 1999 Regal I will give it a try Thanks