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Overheating when driving on highways only

Tiny
WIL.FIXIT
  • MEMBER
  • 1996 HONDA ACCORD
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 136,500 MILES
When driving on the highway the car begins to overheat, when driven on local roads it stays at regular operating temperature. When it begins to overheat if I put the car in neutral the temperature gauge quickly drops down back to regular operating temperature but as soon as I put the car back in drive the needle steadily climbs back up to ‘hot’ it only happens when I maintain a higher rate of speed, 70 mph or more. Haven’t done any recent work on the car other than tie rods and brakes.
I tried turning the heater on to keep it from overheating but no hot air comes out, not even warm air. Could my heater core be the issue?
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Wednesday, October 23rd, 2019 AT 1:27 PM

1 Reply

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

This sounds like you could be having an issue with your water pump starting to fail. Your vehicle's water pump is driven by the timing belt, so there is really no way to inspect it besides removing the timing chain cover and if you get into the engine that far I would recommend not only replacing the water pump but the timing belt and timing belt tensionsor as well. We have detailed instructions from the vehicle manufacturer on how to remove and install each of these components, please just let us know what you decide to do and we can get those instructions sent right over to you, should you wish.

Thanks,
Alex
2CarPros
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Thursday, October 24th, 2019 AT 12:21 AM

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