I have a 2000 monte carlo and have a code of p0301. on 2000 Chevrolet Monte Carlo

code p0301 and overheating. replaced thermastat,water pump, and radiator plus it does not put heat out with the heater on

by in Florissant, MO on April 14, 2012
2 answers 2 comments
ANSWER by on April 15, 2012
P0301 is a missfie fault detected at #1 cylinder. Better pull that spark plug and check for coolant getting in that cylinder. Could be a bad intake or worse a blown head gasket.
COMMENT by on April 15, 2012
that plug does have more moisture than the rest. how can i tell if its the head gasket or intake
COMMENT by on April 15, 2012
Give me more info about what size engine and I will get back to you Monday, At work I have access to more info. Have you had this engine overheat very bad and how long ago?
ANSWER by on July 21, 2012
The code is the egr valve, its easy to replace.