Converter problem?

[blackbox]

I noticed that the car when warmed up tends to jerk a certain mph. Its a jerky feeling as if somthing was attached to the car bumper and plulling it back. Well the one thing that stops this feeling is when i unlock the converter by tapping on the brake pedal. As soon as i let of the brake light the jerk comes right back. Is this a converter problem or something else?

 

[Chuck Leeper]

An engine miss that's transmitted thru the locked converter?

 

[87buickracer]

converter problem

I had that problem once and changing the lock/up solenoid fixed it.

 

[blackbox]

thanks guys ill look in to both things.

 

[TT/Ameasap]

TCC lock up.... I called it "Fish Bite".

 

[blackbox]

would the tcc cause any lag conditions. Car started lagging around the same time as the jerkyness.

 

[TT/Ameasap]

If it's sticking...yes. When you slow down and get into boost it will be in a higher gear resulting in lag.Thats what mine did. I changed the TCC solenoid and cured it.

When owning one of these cars, you will need to change the tranny fluid anyway, so just replace it with the fluid change.

 

[blackbox]

thanks ill try it and let you know

 

[noboost85]

would a metric 200 in a 3.8 na do this? i had to park my baby, its been"jerking" like this as well.....motor has over 100k, but runs like a raped ape in first, jerks in 3rd...