can any one help

[robertgordanier]

i was told you could jump a and b on the ecu to read the codes but i dont know which one is a or b is there any pictures or can anyone decribe it for me. i also have a problem that others have but have seen no answers when my car is freeway speeds and a speed is held steady in will start to shutter once i let off and press the gas again it goes away (94se bonn) could it be the tps or tcc and does any damage occur if i drive with the tcc disconnected.

[randman1]

You're 94 has kind of a hybrid ECM. You can not use the "paper clip" trick to pull the codes. My local Autozone will pull codes for free as will Advance Auto. Have any of those nearby?

[robertgordanier]

Originally Posted by randman1

You're 94 has kind of a hybrid ECM. You can not use the "paper clip" trick to pull the codes. My local Autozone will pull codes for free as will Advance Auto. Have any of those nearby?

have autozone but they said they could only do 96 and newer

[jdq]

Have you tried new plugs a wires,

[cbushnell]

My 96 Bonneville has the same shudder when cruising down the highway, after a while my Check Engine light came on. I took it into the garage and was told that the computer said it was a selenoid in the tranny and the mechanic told me that it was a pretty common problem. I have not had it fixed yet and it has been running that way for a while. I wouldn't recommend not fixing it because it should be fixed, but like I said, mine hasn't caused any problem other than my own frustration.

[richtazz]

By the speed at which your problem occurs, I would say it's a TCC solenoid not releasing the torque converter from lock-up causing your shudder. You can verify this by unplugging the TCC harness. IF the problem goes away, the TCC is the culprit. As long as you don't drive constant highway speed for long periods, you can drive the car with it unplugged with no problems (slight mileage drop and slightly higher trans temps on long cruises). If you do a lot of highway driving, then you can overheat the trans due to the torque converter not locking up and slipping. Try either Seafoam or Trans-X transmission additive. These are proven products that can help un-stick these solenoids if they are sticking due to varnish build-up in a high mileage car. If the windings in the solenoid are going bad, and causing an intermittent operation, then they won't help. For a few bucks, it's worth trying and no harm will be done.

[jdq]

Hey Richtazz I here alot about this sea foam being used in many ways could you explain what it is all about.thanks

[richtazz]

Seafoam is a brand name of engine /transmission /fuel chemicals that actually do what they claim. Lucas is another good brand name of various automotive chemicals that work as claimed. Trans-X is a great transmission treatment, that I have used with excellent results.