2000 Chevy Astro overheating

2000 CHEVROLET ASTRO
118,000 MILES • 6 CYL • 2WD • AUTOMATIC
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ROBORABBIT
  • MEMBER
  • 1 POST
overheats when ac is on checked fluids ok runs fine when ac is off
May 28, 2010 at 6:53 PM
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MHPAUTOS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 31,937 POSTS
Hi there,

Check that the A/C cooling fan is coming on with the A/C.

Mark (mhpautos)
May 29, 2010 at 2:40 AM
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SOUTHANNST
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  • 1 POST
my 2002 astro was doing the same thing - overheating only when air conditioning was on. after replacing the thermostat and fan clutch i finally replaced the radiator and that solved the problem. the front of the radiator could not be seen because the a/c condenser blocked my view. it turned out that a cat had been climbing up into the engine compartment and sitting next to the radiator to keep warm in the winter, leaving a thick coating of cat hair on the front of the radiator. now i can sit in traffic on a hot summer day with the a/c on with no problems. paid 130$ for the radiator at salvo auto parts.
Aug 18, 2010 at 8:47 PM