Running odd
Thread Starter
Instructor
Joined: Jan 2013
Posts: 133
Likes: 0
Running odd
I am curious if anyone felt this? I was driving home from a cruise night in CT. I noticed a stumble around 1500rpm that seemed odd. It did it numerous times. I never felt this before tonight. The car has 220 miles on it. Should I continue to drive it as it may still be breaking in or drop it at the dealer and have it looked at?
To me and any other vehicle, I would be dropping this thing at the dealer and having it gone through. With this being new technology I wanted to ask people that have had the C7 for a while if this is a common thing during the first 500 or so miles during the break in period.
Is this a common occurrence? Should I continue to drive it? I don't have any warning lights. Any info would be great.
To me and any other vehicle, I would be dropping this thing at the dealer and having it gone through. With this being new technology I wanted to ask people that have had the C7 for a while if this is a common thing during the first 500 or so miles during the break in period.
Is this a common occurrence? Should I continue to drive it? I don't have any warning lights. Any info would be great.
Thread Starter
Instructor
Joined: Jan 2013
Posts: 133
Likes: 0
The load is a part throttle load on a very slight incline. I have driven it on this road before without feeling the stumble. The other reason it is concerning me is I did think it may have been the cylinder deactivation however it was still showing v8 on the dash.
Pro
Joined: Jul 2004
Posts: 681
Likes: 39
From: Columbus Indiana
My M7 does this also. Light throttle, slight incline, 1500 RPMs; very slight "roughness" from engine (almost like a slight mis-fire). Does it in Touring and Sport modes, so definitely not V4, although it does have the characteristics of it. If you take it to the dealer, would be interested in hearing what they say.
Race Director
Joined: Jun 2000
Posts: 13,733
Likes: 66
From: Hurst, TX USA
I feel that every so often. I attribute it to my A6 searching for a gear at low speeds and low acceleration. I don't think it is a big deal. Never feel it under moderate or heavy acceleration.
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Le Mans Master
Joined: Dec 2006
Posts: 5,139
Likes: 482
From: H-Town Texas
You didn't mention if yours was M7 or A6. However, keep in mind that the TC lockup funtions on modern Automatics are really geared more toward economy than performance, relative to the application. So, at a cruising speed in higher gear, it is not uncommon to get this kind of symptom from an auto trans. The trans is programmed to hold on to that higher gear as long as possible, think MPG's. In moments like these, either a slight blip on the throttle, or a slight tap on the brake, (whichever is more appropriate for traffic conditions) will be just enough to get it to drop a gear.
Of course if it's an M7, than you get to choose the gear, so perhaps you're in too high of a gear for the conditions.
However, I would not hesitate to take the car in to have checked, if what I described above is not appropriate to the situation at hand. The bad thing about high tech is that there are alot more systems involved in simple mechanical operations. The good thing about high tech is that it can often tell you what the problem is before a wrench is ever turned.