99 sunfire is trying to overheat

Asked by Feb 28, 2017 at 02:58 AM about the 1999 Chevrolet Cavalier

Question type: Maintenance & Repair

I overheated my 99 sunfire, replaced the head,
head bolts and head gasket, thermostat, intake
gasket, exhaust gasket, VC gasket, and the radiator
is 1.5 years old. Didn't replace the water pump. The
car seemingly runs funds great on the highway for
about 30 minutes or 25 miles, and then all of a
sudden the temp creeped up a bit too high. I pull
over and shutit off so that it doesn't over heat
again. The over flow had spit some water out. Is
this another blown head gasket? Maybe a partially
failing water pump? Or could be incorrect
thermostat? What do u guys think, any questions
just ask I'll answer them as best I can

2 Answers

115,025

It possible that the pump is bad and not pumping. You may want to change the radiator cap and did you burp the system the correct way..and is your fan coming on at the correct temp.

Didn't burp the system, the fan comes on at the correct temp, haven't changed the cap. Replacing the Cap, is that a common practice and what is the purpose of it? Do radiator caps go bad? And does this even apply to me because mine doubles as the overflow cap, the radiator doesn't actually have a cap.

Your Answer

Chevrolet Cavalier Experts

  • #1
    John Saffrahn
    Reputation
    3,080
  • #2
    dandyoun
    Reputation
    1,380
  • #3
    mbar1
    Reputation
    1,250
View All

Related Models For Sale

Used Chevrolet Malibu
91 Great Deals out of 1,768 listings starting at $888
Used Chevrolet Camaro
931 listings starting at $12,498
Used Chevrolet Impala
173 Great Deals out of 1,051 listings starting at $1,500
Used Toyota Corolla
205 Great Deals out of 3,659 listings starting at $1,494
Used Honda Civic
276 Great Deals out of 4,213 listings starting at $1,995
Used Ford Focus
94 Great Deals out of 2,444 listings starting at $1,200
Used Chevrolet Corvette
526 listings starting at $7,900
Used Ford Mustang
5 Great Deals out of 1,035 listings starting at $3,995
Used Chevrolet Silverado 1500
186 Great Deals out of 10,544 listings starting at $2,230
Used Toyota Camry
83 Great Deals out of 2,209 listings starting at $1,900
Used Honda Accord
57 Great Deals out of 1,175 listings starting at $1,888
Used Chevrolet Tahoe
5 Great Deals out of 812 listings starting at $4,200

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.