problems, accel, shift, trans? tcc?

[redroan351]

I posted a while ago with "weak low rpm, good high" and at part to half throttle it boggs and then at some point takes off like a bat, then shifts and boggs down again then takes off again. 97, 3.1.

Have checked all sensors and will finally be getting a scanner that can monitor PID's tomarrow. But it has felt like the tcc solonoid problem. Also felt like tp, but checks okay along with the other engine controls.

Funny though, I just read a post that said jeffco and someone else had gone around a sharp corner and then lost downshift, just wound it up real high like a slip. Let off a while and it will cetch. Well this has just recently happened to me as well. But it didn't give a light, nor any codes. Shouldn't a slip give a code?

So any ideas? I will be checking with a scanner likely Tuesday. Thanks for the help. Roan.

[maxwedge]

Originally Posted by redroan351

I posted a while ago with "weak low rpm, good high" and at part to half throttle it boggs and then at some point takes off like a bat, then shifts and boggs down again then takes off again. 97, 3.1.

Have checked all sensors and will finally be getting a scanner that can monitor PID's tomarrow. But it has felt like the tcc solonoid problem. Also felt like tp, but checks okay along with the other engine controls.

Funny though, I just read a post that said jeffco and someone else had gone around a sharp corner and then lost downshift, just wound it up real high like a slip. Let off a while and it will cetch. Well this has just recently happened to me as well. But it didn't give a light, nor any codes. Shouldn't a slip give a code?

So any ideas? I will be checking with a scanner likely Tuesday. Thanks for the help. Roan.

Some trans related codes will not display without a trans function scanner plugged in, this will access slippage/solenoid/trans codes, a regular scanner cannot do this. At full throttle some late model cars/trucks cut back the timing just as the trans shifts to save wear on the units, I have not researched whether your pcm is programmed to to this.