Swerving Accel/Deccel problems
I would double check:
Rear tire pressure. use a different gauge. it is pretty much the only cause to your problem. If youe a-arms werre falling out, it would also cause it. but im sure the alignment guy would find it.
Another is tire size. If the tires are different sizes, even barely, it will cause this. Hence why one low tire causes it. It's not pressure per say, a low tire will cause it to be smaller than the other.
Use a tape measure to measure the circumference of the tire. I'll bet, for some reason, they are not the exact same size.
Rear tire pressure. use a different gauge. it is pretty much the only cause to your problem. If youe a-arms werre falling out, it would also cause it. but im sure the alignment guy would find it.
Another is tire size. If the tires are different sizes, even barely, it will cause this. Hence why one low tire causes it. It's not pressure per say, a low tire will cause it to be smaller than the other.
Use a tape measure to measure the circumference of the tire. I'll bet, for some reason, they are not the exact same size.
Originally Posted by TonysMI4,Sep 24 2010, 01:09 PM
Don't worrie about this. Its over-steer or under-steer from what iv read. AP1 has over-steer and ap2 has under-steer. Mine does it to. At first i thought i was going crazy. The car does that on its own. I dont like it but its just what it is.

Oversteer is when the rear of the car breaks loose around a turn (turning too much)
Understeer is when the front tires break loose, or push going around a turn (not steering enough)
Originally Posted by 1point3_to_2point2,Sep 24 2010, 01:57 AM
im having problem with my car and i cant figure out what it is
more noticeable at higher speeds
when i start driving and i step on gas the car kind of jerks to the right
and
when i let off the gas after moderate acceleration the car jerks back to left
so far ive checked
tires pressures
alignment
and brand new tires (all same age)
1 more thing to add...i recently bent a front right rim pretty badly but not sure how
more noticeable at higher speeds
when i start driving and i step on gas the car kind of jerks to the right
and
when i let off the gas after moderate acceleration the car jerks back to left
so far ive checked
tires pressures
alignment
and brand new tires (all same age)
1 more thing to add...i recently bent a front right rim pretty badly but not sure how
Originally Posted by 1point3_to_2point2,Sep 24 2010, 01:57 AM
more noticeable at higher speeds
when i start driving and i step on gas the car kind of jerks to the right
and
when i let off the gas after moderate acceleration the car jerks back to left
when i start driving and i step on gas the car kind of jerks to the right
and
when i let off the gas after moderate acceleration the car jerks back to left
Originally Posted by Billman250,Sep 25 2010, 08:10 AM
Your car is screwed up 
Oversteer is when the rear of the car breaks loose around a turn (turning too much)
Understeer is when the front tires break loose, or push going around a turn (not steering enough)

Oversteer is when the rear of the car breaks loose around a turn (turning too much)
Understeer is when the front tires break loose, or push going around a turn (not steering enough)
If you've positively ruled out different tire pressure and different tire size (circumference measurement), then you have a serious rear-suspension problem. Even if the "alignment guys" didn't find it, that doesn't mean that they were competent.
This is not a normal behavior of the S2000.
Check suspension bushings. Control arm bushings, check the differential bushings. If its that noticeable when ur driving then you will def see something wrong underneath the car. Most vehicles with bad trailing arm bushings will cause this accel/decel shift.












my weight has been shifting for years
