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1997 Chevy Monte Carlo black antifreeze

Tiny
ALIEN007
  • MEMBER
  • 1997 CHEVROLET MONTE CARLO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 210,000 MILES
Went to get my radiator flushed and the mechanics said not to because my gaskets were blown going by my antifreeze being black. When I bought the car the head gaskets, water pump, plugs, and all upper gaskets had been replaced at 170,000 miles. The car has never over heated since I have been driving it. On the highway the car will sometimes hesitate while at a constant speed like the fuel pump is going out. This only started after having the air conditioner fixed a month ago, condenser, vacc, etc.
I'm not convinced a gasket is blown, any ideas? Been driving it for about 5 months and have had no other problems. Antifreeze has been black since I've had the car. No check engine light has ever come on.
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Thursday, November 4th, 2010 AT 2:54 AM

1 Reply

Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
It could be the blackness was caused by a previous headgasket failure and angine not cleaned thoroughly leaving residue in coolant passages. The tech has now way of knowing this. He could do a checmical or compression test to check headgasket
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Thursday, November 4th, 2010 AT 5:34 AM

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