On Dec 13, 3:35 pm, Scott Braddock wrote:

The most common cause of "frozen flaps" in Cessnas like yours are the
limit switches on the flap actuator, rather than the actuator itself. A
judicious application of a heat gun, through the appropriate inspection
panel, will free them up for a while. They are relatively inexpensive
to replace, however, and that's what is needed for a more permanent fix.

Those little microswitches get oil in them from the jackscrew
threads, and the oil draws dust and crud and gunks up the switch
contacts with sludge. In the cold the sludge will congeal and make the
switch's mechanism stick, too. Replacing them is the best thing, and
you want to do it soon. If you had to abort a landing and go around,
the flaps on a 150/152 will hurt the climbout dangerously; there's
just too much drag.

Dan