My car RPM goes from o to 3000 rpms without me touching the gas then its starts on 1995 Honda Accord

to over heat so much that I cant drive it . What causes this type of problemk I already replaced the thermostat and I dont have any vislble leaks . Thanks for your help

by in Columbus, OH on November 17, 2012
2 answers
ANSWER by on November 17, 2012
possibly head gasket
ANSWER by on November 17, 2012
Find the cause of the fast idle first. Check for vacuum leaks and throttle cable binding/off track.