pulls to the left under hard acceleration
Thread Starter
Instructor
Joined: Jan 2009
Posts: 101
Likes: 0
From: bigfork mt
pulls to the left under hard acceleration
Got the car out for the second time yesterday.Its pretty cool but is hard to control under hard acceleration.It wants to pull left!wondering if thats normal and is there a cure?
Drifting
Joined: Nov 2007
Posts: 1,616
Likes: 11
From: Newport, RI
It should go straight............I would start with a 4-wheel alignment. Just my $.02
Could also be something in "Active Handling" or maybe something binding in rear suspension (on left side), such as emergency brake.
Bottom line, it should go straight. Anything else is dangerous.
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Could also be something in "Active Handling" or maybe something binding in rear suspension (on left side), such as emergency brake.
Bottom line, it should go straight. Anything else is dangerous.
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Team Owner
Joined: Oct 2006
Posts: 65,010
Likes: 133
From: Title town, Champs live here.
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19
This may sound stupid, but is your tire air pressure good all the way around. Other than that possible alignment issues.
Le Mans Master
Joined: May 2008
Posts: 5,892
Likes: 47
From: Helotes TEXAS
Funny you should bring this up. Mine does exactly the same thing !
Launch it and in rowing through the gears, the car pulls to the left and comes back to straight in between gear shifts... freaking odd. 
And I've had the car aligned twice already !
Le Mans Master
Joined: Feb 2004
Posts: 8,629
Likes: 16
From: York PA
Try putting your left hand at 12:00 on the wheel.
Race Director
Joined: Feb 2008
Posts: 10,926
Likes: 30
From: Not where I want to be!!
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19
If I remember right didn't you buy Flatout's car. Under hard acceleration with a supercharger your lucky you have traction under 70 mph. 
But I could be wrong. 
But I could be wrong.
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Thread Starter
Instructor
Joined: Jan 2009
Posts: 101
Likes: 0
From: bigfork mt
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
One thing often overlooked - change the fluid in your differential and make VERY sure you've got the correct amount of POSI additive in there. Too much makes the car pull one way and too little the other. I use RP which comes premixed with the additive so there is no need to add more.
Just my $.02
Just my $.02
Le Mans Master
Joined: Jun 2007
Posts: 6,301
Likes: 6
From: LAND OF OZ Kansas
One thing often overlooked - change the fluid in your differential and make VERY sure you've got the correct amount of POSI additive in there. Too much makes the car pull one way and too little the other. I use RP which comes premixed with the additive so there is no need to add more.
Just my $.02
Just my $.02
Racer
Joined: Oct 2005
Posts: 367
Likes: 3
From: maple grove and North Port fl mn and now florida
Try turning the traction control off and see if the same thing happens. Mine has a habit of changing lanes NOW if I drive with it on, thats what happens when you get these cars in the HIGH HP ranges.
Thread Starter
Instructor
Joined: Jan 2009
Posts: 101
Likes: 0
From: bigfork mt
I am getting a servive traction control and abs light on dash,guy I bought it from said it was just a glitch in the system,was I mislead?
Racer
Joined: Oct 2005
Posts: 367
Likes: 3
From: maple grove and North Port fl mn and now florida
I get the Service Traction control notice as well and it is just the system is not used to a lot of HP. Just cancel and continue on. I dont get the ABS notice but it could all be related. I dont know what kind of HP you are running, but once you get above the 500 mark I have found that if you drive with the Traction Control on then pour the coals to it the system will sense a traction control problem and will try to adjust the car to keep it straight. With a whole bunch of HP the system over reacts and puts way to much correction in and the feeling of pulling to the left in you case, mine is instant lane changes. ( 427, 17 lb boost and 150 shot Nitrous). I run with mine off at all times and I have read that other folks go to Competitive mode. Me suggesting to turn it off and see how it handles was just a thought to try and see if it was related to your high torque. Cheers and keep us posted
Safety Car
Joined: May 2006
Posts: 3,799
Likes: 1
From: Northern Virginia
St. Jude Donor '08
I get the Service Traction control notice as well and it is just the system is not used to a lot of HP. Just cancel and continue on. I dont get the ABS notice but it could all be related. I dont know what kind of HP you are running, but once you get above the 500 mark I have found that if you drive with the Traction Control on then pour the coals to it the system will sense a traction control problem and will try to adjust the car to keep it straight. With a whole bunch of HP the system over reacts and puts way to much correction in and the feeling of pulling to the left in you case, mine is instant lane changes. ( 427, 17 lb boost and 150 shot Nitrous). I run with mine off at all times and I have read that other folks go to Competitive mode. Me suggesting to turn it off and see how it handles was just a thought to try and see if it was related to your high torque. Cheers and keep us posted
That would indicate a problem with the system. I have gotten the traction control message before when I have jumped on the car but it always goes away after several seconds.
Sounds like your TC/AH system may need servicing.
Have you tried turning off traction control to see how car handles on the same piece of road?
Don't know if you have ever seen this article before.
http://www.corvetteactioncenter.com/...ehandling.html
