Low speed surging and bucking
Thread Starter
Advanced
Joined: Nov 2005
Posts: 75
Likes: 0
From: tuscaloosa al
Low speed surging and bucking
My 09 coupe with z51 always has mild surging/bucking at parking lot speeds no codes, dealer says it is normal but it drives me crazy. Any throttle at all jumps from idle(650rpm) to 1100rpm in neutral. Has anyone fixed this problem? Help.
Thanks in advance,
Chuck
Thanks in advance,
Chuck
Racer
Joined: Aug 2006
Posts: 357
Likes: 1
From: Sterling VA
Mine has always done that too a bit. There was a thread a while back that touched on this. A number of us checked the gap on our spark plugs and found them to be inconsistant. After some re-gapping it has helped a bit, so you might try that. I think honestly it's probably in the factory tune.
Safety Car
Joined: Oct 2003
Posts: 3,597
Likes: 101
From: TN PA
CI 5-6-7-8-9-10-11 Vet
I would check the airfilter for being correctly seated and the screws that hold it in place are tight. I would also check the coupler between the air bridge and the throttle body for proper seating and that the clamps are tight.... The 08's and up are very sensitive about smooth air flow...
Advanced
Joined: Mar 2006
Posts: 56
Likes: 0
From: Richmond Texas
I'd be interested to hear what can assist in reducing this as well. I experience the same issue on my '08. Although, I installed Borla Stingers last week, this has seemed to help some.
I figure most of it is the factory tune. Plan to have the car tuned anyway, so that could solve the annoyance.
I figure most of it is the factory tune. Plan to have the car tuned anyway, so that could solve the annoyance.
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Safety Car
Joined: Oct 2003
Posts: 4,024
Likes: 13
From: Loveland CO to Central Coast CA
I think this is normal behavior for the LS3 (esp see post #6):
http://forums.corvetteforum.com/c6-c...l-hunting.html
And it's a small price to pay for incredible performance.
http://forums.corvetteforum.com/c6-c...l-hunting.html
And it's a small price to pay for incredible performance.
Advanced
Joined: Jan 2002
Posts: 65
Likes: 0
From: Dallas TX
side note the electronics in the maf & TB carry different serial numbers for factory cpu programs.
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
If there is a tuner out there who can perfect my 09's driveability tuning without forcing me to run in either pure MAF or speed density mode I'd sure like to talk with them.
MN6 LS3 with G6XE, Kooks, cats, ported intake manifold and ported TB
MN6 LS3 with G6XE, Kooks, cats, ported intake manifold and ported TB
Pro
Joined: Nov 2001
Posts: 569
Likes: 23
From: Venice Florida
I had a similar problem with my 08 A6, rough idle, hard start etc., finally set a code, dealer replaced air sensor and air bridge, service writer told me there was a campaign out on the air bridge. Running fine now although I have not put many miles on since the fix. Check with your local dealer for any TSB s. Good Luck
6th Gear
Joined: Nov 2009
Posts: 6
Likes: 0
I have an 08 new in August. No bucking or surging until I removed the radiator shroud to clean out the remains of a slow flying Dove. After the issues of removal I decided not to put the shroud back on until I replaced the air box with an aftermarket. The minute I drove the car down the street on to the highway it started bucking and surging and coded. Anybody else had a similar situation? I'm guessing if I return the factory rad. shroud the coding will clear and the bucking will stop? Any comments would be appreciated.
