1999 Cadillac STS

1999 CADILLAC STS
155,000 MILES • V8 • FWD • AUTOMATIC
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MARNELIUS1
  • MEMBER
  • 1 POST
my car initially ran hot and as soon as my car gave me the alarm i pulled over. it was too late hole in radiator. so i got a new radiator. drove it for two weeks while keeping a close eye on antifreeze had to add maybe a cupful every 2 days, then everyday. noticed car running toward hot often but never drove it hot, also saw that heat had stopped working it may get hot for 2 minutes then go cold. i then replaced water pump and thermostat for second time and added some seal tabs. mechanic said its getting so hot that its leaking out resevoir. now after all this i am still getting low coolant alarm and heat will still not work and i am noticing no leaks, and coolant may be still bubbling out of resevoir but i cant tell but its going somewhere. what do you think is the problem.
Dec 10, 2009 at 5:22 PM
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FACTORYJACK
  • CERTIFIED EXPERT
  • 4,159 POSTS
Have the cooling system tested for combustion gases present. It is quite possible you have an internal leak.
Dec 10, 2009 at 9:19 PM