With vehicle turn off the electric power remains feeding the Throttle body?

Tiny
ABAYA
  • MEMBER
  • 2009 CHEVROLET CAPTIVA
  • 2.0L
  • 4 CYL
  • TURBO
  • 4WD
  • MANUAL
  • 120,000 MILES
When I cut off the engine the electric power remains feeding the throttle body and I hear low whistling coming from the throttle body.
Please excuse my bad English.
Wednesday, May 14th, 2025 AT 9:25 AM

17 Replies

Tiny
ABAYA
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Hi,
I want to add that the engine starts and accelerates without any difficulty. But every morning I find the battery drained.
Thank you, sir.
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Thursday, May 15th, 2025 AT 12:17 AM
Tiny
KEN L
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Can you upload a short video of the noise so I can hear it? You can upload it here with your response.
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Friday, May 16th, 2025 AT 10:01 AM
Tiny
ABAYA
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Hi,

Sorry, the sound coming out from the throttle body is very low. It seems that the electric motor is unable to close the throttle body gate. But when I take off the battery negative wire, the gate gets closed.
Excuse my bad English Mr. Ken
Thank you very much.
Video (Click to make bigger)
Thumb
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Saturday, May 17th, 2025 AT 12:18 AM
Tiny
KEN L
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No problem, I would unplug the throttle body to see if the noise goes away and if so, replace the throttle body. Thanks for the video, it helps.
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Sunday, May 18th, 2025 AT 5:43 PM
Tiny
ABAYA
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Thank you Mr. Ken.
It's exactly like what you said.
It's helpful.
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Sunday, May 18th, 2025 AT 10:07 PM
Tiny
KEN L
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Together we can fix it! :)
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Monday, May 19th, 2025 AT 9:36 AM
Tiny
ABAYA
  • MEMBER
  • 77 POSTS
Hi.
Today i'll replace a new throttle body.
I'll let you know the result.
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Tuesday, May 20th, 2025 AT 8:13 PM
Tiny
KEN L
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Sounds good, thanks for letting me know.
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Thursday, May 22nd, 2025 AT 9:56 AM
Tiny
ABAYA
  • MEMBER
  • 77 POSTS
Hi. Mr. Ken
Is a bad reprogrammation of the ecu can lead to this problem?
I must say that the engine run normally.
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Thursday, May 22nd, 2025 AT 2:28 PM
Tiny
KEN L
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Yep, I can't count how many times reprogramming fixed strange issues. Can I ask what problems remain?
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Friday, May 23rd, 2025 AT 11:05 AM
Tiny
ABAYA
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Hi, mr. Ken
Is a bad reprogrammation can led to the problem I encounter in the throttle body? My throttle body remain open after turning off the engine.
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Friday, May 23rd, 2025 AT 11:14 AM
Tiny
KEN L
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That can be normal as long as it closes on start up.
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Friday, May 23rd, 2025 AT 11:41 AM
Tiny
ABAYA
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Thank mr. Ken
But it remains open after I cut off the engine.
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Friday, May 23rd, 2025 AT 12:11 PM
Tiny
KEN L
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Yes, this is to allows gas fumes to dissipate, I think it is normal but you can try a new part and see if it does the same thing.
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Friday, May 23rd, 2025 AT 1:03 PM
Tiny
ABAYA
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Thank you
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Friday, May 23rd, 2025 AT 1:57 PM
Tiny
KEN L
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You are welcome, have a great weekend!
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Friday, May 23rd, 2025 AT 4:09 PM
Tiny
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Thank you very much.
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Sunday, May 25th, 2025 AT 8:11 AM

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