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Overheats at idle

Tiny
GEOFFPEARL
  • MEMBER
  • 2006 HONDA PILOT
  • 3.6L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 301,000 MILES
My air conditioning was not working and I fixed it. Now the car overheats at idle. Cools off immediately once I press on accelerator (in gear or neutral).
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Wednesday, May 27th, 2020 AT 8:39 PM

6 Replies

Tiny
MOTOR MASTER
  • MECHANIC
  • 279 POSTS
Hello my name is Dave.

First thing we need to check is the coolant level, if the level is low it will have the systems you have described. The other thing we need to check is if the radiator fans are coming on when you turn on the A/C. If you could check these 2 things and let us know the results we can help you pinpoint the problem. We look forward to hearing back from you with the results and thank you for using 2CarPros!
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Thursday, May 28th, 2020 AT 4:03 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,702 POSTS
This guide can help you find the problem as well:

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Please let us know what you find.
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Thursday, May 28th, 2020 AT 3:47 PM
Tiny
GEOFFPEARL
  • MEMBER
  • 31 POSTS
I filled up the radiator with about half a jug of coolant and so far so good. I let it idle for just a couple minutes and the temperature didn’t rise. I will be able to check again tomorrow.
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Thursday, May 28th, 2020 AT 6:03 PM
Tiny
KEN L
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  • 47,702 POSTS
Can you turn the air conditioner on to see if the cooling fan come on? It can take about 2 minutes to happen. Please let us know.
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Friday, May 29th, 2020 AT 11:18 AM
Tiny
GEOFFPEARL
  • MEMBER
  • 31 POSTS
Yes. When I turned on the AC the cooling fans turned on. Then shut off AC and the cooling fans turned off.
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Friday, May 29th, 2020 AT 12:51 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
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Perfect. Does the A/C blow cold? This is the normal operation of the fans, one can come on at a time.
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Saturday, May 30th, 2020 AT 11:02 AM

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