Auto trans randomly shifts into low gear?

[dlrotter]

Thank you for the feedback and diagram! I'd does seem like it may be a sensor telling it to shift to me. Have any leads as to where to pick up the sensor if it is the prob after I check linkage? Dealer was about $580! O'Reilys a little cheaper...

[tooter]

Originally Posted by dlrotter

Thank you for the feedback and diagram! I'd does seem like it may be a sensor telling it to shift to me. Have any leads as to where to pick up the sensor if it is the prob after I check linkage? Dealer was about $580! O'Reilys a little cheaper...

Just a guess... but isn't there something that senses a loss of manifold vacuum signalling a heavy engine load that downshifts the transmission? Maybe the vacuum line from the manifold to the engine load sensor is leaking. If the sensor lost its vacuum signal, it would drop the transmission into low because it would behave like the gas pedal was pushed to the floor.

(ok CT... now you can tell me how wrong I am again )