only at some speeds

i have a 91 v6 3.1 automatic camaro when i drive and i hit 40-45 60-65 mph it jerks alittle then its ok, no codes come up any help would be appreciated.

dumb question but does it shift hard

dumb question but does it shift hard
yes it shifts hard once in awhile it will shift light

Thats just power going back to the wheels, its all good.

Thats just power going back to the wheels, its all good.
its like a constant jerking when it is accelerating dosent seem normal

its like a constant jerking when it is accelerating dosent seem normal
like its having a hard time trying to change gears.could it be my transmission tourq sensor going bad.............

I'd say it's an ignition or fuel related prob.

I'd check the O2 out.

the jerking, could it be your torque converter locking and unlocking???? there is a known problem with the cooling fan motor creating a harmonic that the knock sensor interprets as engine knock, and it retards the timing, which causes the converter to unlock, the harmonic goes away, timing is restored, and the converter locks up, then it starts over again. My RS did that at 45mph, i replaced the fan motor, and the problem went away.

however if it was what i said, it would happen at a consant speed, not just accelleration. so is it only while accelerating, or is it when you are cruising?

other than that, check your trans fluid level, color, and smell, (not taste lol) if its low, brown, or smells burned, you need a tranny service.

also, have you done any modifications to the drivetrain, such as a higher stall converter, aftermarket rear gears etc. etc.

however if it was what i said, it would happen at a consant speed, not just accelleration. so is it only while accelerating, or is it when you are cruising?

other than that, check your trans fluid level, color, and smell, (not taste lol) if its low, brown, or smells burned, you need a tranny service.

also, have you done any modifications to the drivetrain, such as a higher stall converter, aftermarket rear gears etc. etc.
thank for all the info, i will check the trans fluid first.

i have a 91 v6 3.1 automatic camaro when i drive and i hit 40-45 60-65 mph it jerks alittle then its ok, no codes come up any help would be appreciated.
first i would like to say thank you for the many reponses.i went out and replaced my oils,filters. everything was fine i still could not find problem.

i have a 91 v6 3.1 automatic camaro when i drive and i hit 40-45 60-65 mph it jerks alittle then its ok, no codes come up any help would be appreciated.
had to take it to a shop there they ran a scope and computer test check . they found secondary ignition wire failed.they installed new ignition plug wire set. reset ignition timing to factory specs. cleared the codes and now the car runs good...

I'd say it's an ignition or fuel related prob.


thanks for the update!