1987 Chevy Van Overheats

1987 CHEVROLET VAN
185,000 MILES • V8 • 2WD • AUTOMATIC
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JJC28
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  • 2 POSTS
1987 G20 Chevy Van Overheats replaced thermostat heater core
Jan 7, 2011 at 11:37 PM
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RASMATAZ
  • ✓Experienced 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
Jan 7, 2011 at 11:51 PM
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WRENCHTECH
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Are you losing any coolant over time?
Jan 8, 2011 at 5:58 AM
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JJC28
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  • 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.
Jan 9, 2011 at 9:50 AM
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WRENCHTECH
  • ✓Experienced 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.
Jan 9, 2011 at 9:56 AM
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