1998 Pontiac Grand Prix Cooling

Tiny
CHARLIE1229
  • MEMBER
  • 1998 PONTIAC GRAND PRIX
  • 170,000 MILES
Should I be concerned if I have a black guck around the underside of my radiator cap. I do have overheating problems every once in a while when in traffic. So when I'm not moving and driving in the city my engine temp gets a little high.
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Sunday, June 30th, 2013 AT 4:14 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
If the vehicle overheats when you are stopped in traffic, make sure the radiator fans are turning on. As far as the gunk, I would recommend flushing the system. Also, make sure there is no oil mixing with the coolant as well as coolant mixing with the engine oil.
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Sunday, June 30th, 2013 AT 9:18 PM

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