Most likely, what you're feeling isn't a 4-3, 3-4 shift, but the torque
converter locking and unlocking. Two common causes of this are a bad
throttle position sensor (TPS), located on the throttle body (on top of the
intake manifold), or a bad brake switch, located on a bracket alongside the
brake pedal arm. Both are easily checked with a voltmeter (an analog meter
is better for testing the TPS), and both are inexpensive (and simple) to
There are other possibilities, but these are the most common.
Yeah, I just bought one a couple months ago and I've noticed mine
doing it with the cruise on. I don't really use CC but it would be
nice to have it working for when I do want to use it. Thanks for the
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.