1998 Cadillac SRX - STS overheating

Tiny
CINDYBKEVAR
  • MEMBER
  • 1998 CADILLAC STS
  • V8
  • FWD
  • AUTOMATIC
  • 151,000 MILES
A 1998 sts north star engine, thermostat replaced. Overheating within about 20 miles or less on the road. Can not find a radiator cap. Have found no leaking and water pump seems to be working fine. What could be causing the overheating.
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Friday, April 25th, 2008 AT 10:19 AM

3 Replies

Tiny
BUZZSAW
  • MEMBER
Headgaskets are bad, headbolt threads have given way and need helicoiled
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Monday, May 5th, 2008 AT 5:43 PM
Tiny
NMWENN01
  • MEMBER
I am having the same issue with my '98 STS but mine only has 80.000 miles. The mechanic has told me that I will probably need to replace the engine.
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Tuesday, May 13th, 2008 AT 6:09 PM
Tiny
BUZZSAW
  • MEMBER
Haveing it fixed is a better way to go, then you know the headbolt threads are repaired. The engine comes out and the heads come off and all the headbolt threads need repaired regardless if they need it or not. The dealer (a caddy dealer) will cost anywhere from 3-4000.00. They have case hardened steel helicoils for this repair. I have done this repair many times and never had a problem
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Thursday, May 15th, 2008 AT 1:03 AM

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