Why my revs may be going up and down even when in drive. on 1991 Toyota Corolla

i have been told maybe something to do with the auto choke any ideas, had a split raidioator hose

by in Wake Island, HI on June 17, 2013
2 answers
ANSWER by on June 18, 2013
Fill cooling system completely! Low coolant will cause that.
ANSWER by on June 18, 2013
OR WATER THE CAME OUT OF BLOWN COOLING MAY BE IN SENSORS