I recently made and attempt to rotate the white plastic cap on the vacuum modulator. The plastic cap apears to have a lever molded into the cap. I turn the cap counter clockwise then I drove the car. The transmission shift a little smother but delayed shifting from 2nd to 3rd. Once it got into 3rd it immediately shifted into 4th and operated correctly while traveling 55mph. Before rotating the plastic cap, the transmission would delayed shifting even longer in 2nd up to 4500 Rpm then shift. After rotating cap it delayed shifting between 3000-4000.

Fars as the climate, the transmission does the samething whether the engine is hot or cold. I am still brainstorming my problem.

How do I know if the upshift delay solenoid not working properly? On the transmission located on the passagers side is the black vacuum hose is attach to a blue object which I assume is a pump. Am I correct? I will post a photo of this object/pump sometime tommorow. It is kinda hard to get to without dropping the trans. How do I know if object/pump is not opperating properly? Thanks