2001 Honda Accord Car overheats on hills

Tiny
DALET77
  • MEMBER
  • 2001 HONDA ACCORD
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 123,000 MILES
My car overheats on hills when its hot and the air cond is full on. When I turn on heater or turn onto level street, the temp goes back down to normal. Honda says my thermostat is good and there are no leaks in radiator. Radiator shop says my rad is plugged and needs replacement. They only visually examined it. Other symptoms. When I return home in my garage sometimes I hear 20 sec gurgling sound from engine. There's also a very low freq hum for about 2 min. And an acrid sweet smell pervades the garage.I think it's coolant. There's no spillage on the ground or smoke from tailpipe. Dealer wants to conduct leak teat on heads. Any thoughts? Thanks
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Wednesday, August 5th, 2009 AT 4:55 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
I would have the radiator cleaned & flow tested by the radiator shop, I feel that it could be partly blocked, make sure that the cooling fan is turning on when the temp rises above the normal position, have the system leak tested, this will locate any external leaks, the smell may be a small coolant leak evaporation on the exhaust, this will give off a very strong smell, start here.
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Wednesday, August 5th, 2009 AT 5:09 PM

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