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1987 Chevy Van Overheats

Tiny
JJC28
  • MEMBER
  • 1987 CHEVROLET VAN
  • V8
  • 2WD
  • AUTOMATIC
  • 185,000 MILES
1987 G20 Chevy Van Overheats replaced thermostat heater core
Saturday, January 8th, 2011 AT 7:37 AM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the radiator if its clogged and water pump if its pumping coolant thruout the engine-if all okay -Get it block and pressure tested
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Saturday, January 8th, 2011 AT 7:51 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Are you losing any coolant over time?
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Saturday, January 8th, 2011 AT 1:58 PM
Tiny
JJC28
  • MEMBER
  • 2 POSTS
The water pump is in working order the van overheats almost right away a half mile or so. The van wasn't overheating prior to heater core replacement. Radiator forcing fluids into overflow. Thanks for the help.
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Sunday, January 9th, 2011 AT 5:50 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
That likely means that you overheated severely earlier and now have a blow head gasket. Just make sure the thermostat isn't stuck or in backwards and you got all the air out of the system.
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Sunday, January 9th, 2011 AT 5:56 PM

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