1991 Honda Accord car cools down while driving on highway

1991 HONDA ACCORD
98,000 MILES • 4 CYL • 4WD • AUTOMATIC
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ABID
  • MEMBER
  • 2 POSTS
When my heater is on during winter car heats up when it is still or while driving in congested traffic but when I drive for sometime without stopping like on the highway, temperature falls quickly and it again rises back when I stop or drive with frequent stops.
What is cause of this and how can I repair it? Your help will be highly appreciated, thanks.
Jan 15, 2010 at 2:13 PM
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BMRFIXIT
  • ✓Experienced Mechanic
  • 19,053 POSTS
I would suspect and replace thermostat at 1st
check and add coolant as needed
make sure you bleed the coolant system ,after any repair
Jan 15, 2010 at 2:18 PM
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