First thing to check is the coolant. There is an allowed mixture of water and antifreeze. If this is not correct then you will have overheating. The second thing is describe the overheating. What is the temp and any other drive ability issues that are present.
Waterpump
SOURCE: my 1998 chevy cavalier runs hot in slow traffic.
have you replaced the coolant tempeture sensor.
SOURCE: 2002 chevy cavalier is over heating but running
R the fans blowing, make sure its full of water...waterpump may be bad
Testimonial: "fan wasnt blowing at first then started to... water pump huh? thats what i am hearing from many"
SOURCE: replace a fuel pump on 2000 chevy cavalier
REMOVAL & INSTALLATION
(see
Figures 1 and 2)
CAUTION
The fuel injection system remains under pressure, even after the
engine has been turned
OFF. The fuel system pressure must be relieved before
disconnecting any fuel lines. Failure to do so may result in fire and/or
personal injury.
WARNING
The modular fuel sender assembly may spring up from its position.
When removing the modular fuel sender from the tank, be aware that the
reservoir bucket is full of fuel. It must be tipped slightly during
removal to avoid damage to the float.
To install:
Gently pull on the fuel pump reservoir from retainer to assure a
secure fastening. If not secure, replace the entire fuel sender.
Fig. 1: The module fuel sender assembly is mounted in the
fuel tank
Fig. 2: Modular fuel pump component identification
Hope this help to solve your problem (remember comment and rated this).
SOURCE: 2001 Chevy Malibu - have changed out thermostat
check to make sure fans are working for radiator. if not check coolant tempurature sensor, fuses, and relay. is all air out of coolant system!
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