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-   -   Hesitation, Jerking, Bucking At Start-up Only (http://www.camaro5.com/forums/showthread.php?t=304625)

njweatherman 06-28-2013 05:09 PM

Hesitation, Jerking, Bucking At Start-up Only
 
I have a 2013 ss automatic camaro with less than 1,000 miles on it. Ever since I got the car, I sometimes notice that when I first start the car up and give it some gas, the car hesitates, jerks and bucks. This either happens in drive or in reverse.

However, the hesitation, bucking, jerking, etc. immediately stops once I get going and does not come back. It seems to only happen during the first start-up of the day.

Anyone else have this?

meshamey 06-28-2013 06:07 PM

Thats normal on my 2011 ss, been like that form day 1, till it warms up

njweatherman 06-28-2013 06:43 PM

Thanks for the input. I was worried something was wrong.

meshamey 06-28-2013 08:44 PM

It is possible If the car is that new, im sure dealership put 87 octane gas in it.. that's a big NO NO. have you been putting 91 or 93 octane in it? you may need to do the fuse pull to get the computer out of low octane mode. Just do a search on fuse pull..

TheHorse13 06-29-2013 08:03 AM

This is perfectly normal and has nothing to do with the fuel in the car.

The sensors throughout the car do not communicate with the computer control module until a certain temp is reached. As a result, you get the hesitation for the first few minutes of operation.

This is well documented here on the site. Sift around through some of the older posts and you'll find additional info.

njweatherman 06-30-2013 02:01 PM

@meshamey - I only use 93 octane and I went with the dealer to the gas station when they filled the car with 93 octane.
@TheHorse13 - good info. I mentioned it to the dealer and they had no idea what was causing it.

jethrobandit 07-01-2013 10:58 AM

I was searching through the site looking for threads on this issue and glad to find something current. I have this issue on an M6 and figured it was due to it not being warm, but wanted to find out for sure. Have a CAI on it and wondered if new throttle body would improve it, but if its the computer, not much will help that I assume.

TheHorse13 07-01-2013 02:13 PM

Nothing will improve it. This is how the electronics on the car are designed to work.

suzook 07-01-2013 02:41 PM

Remote start it like I do....only needs a 1min warmup...then all is good!

Sftshldr 07-01-2013 07:55 PM

I put my DIC to coolant temp and wait till 160 F. This seems to keep the engine and me happy.

suzook 07-01-2013 09:08 PM

Quote:

Originally Posted by Sftshldr (Post 6739903)
I put my DIC to coolant temp and wait till 160 F. This seems to keep the engine and me happy.

Your dic at 160??? Ouch!

Rhyder 07-01-2013 09:10 PM

hmmm...I always just crank and go, and I don't believe I have ever experienced this, I have a 2012 Auto, is this a 2013 thing?

njweatherman 07-04-2013 03:23 PM

@jethrobandit - if you decide to get a throttle body, let me know what one you get and if you see an improvement. I'm taking mine to the dealer once I approach 3000 miles so they can test everything.

dixonk 07-04-2013 03:27 PM

The VMAX throttle body does not do anything for this. I have it as well going in reverse. Only way around it is let it run for about 30-60 seconds.

Rhyder 07-04-2013 03:45 PM

has anyone taken this into the dealer to see what they say? I would not accept this as just something I have to accept if it was happening to me..

dixonk 07-04-2013 03:48 PM

Never thought of mentioning it since it never really bothered me. Coming from a cammed car before the Camaro the bucking is very tame to say the least ;) I am going to the dealer on Tuesday I might ask just to see what their answer for it is.

njweatherman 07-05-2013 09:29 AM

@Rhyder - I mentioned it to the dealer in passing, and they said they have not heard of anyone else having this problem. I told them I will let them keep it overnight when I bring it in for its first 3,000 mile service.

@dixonk - did the vmax throttle body give you any additional sound or just power?


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