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I have a Kia Grand Carnival. About every two weeks a serious…

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Hello Mechanic's Assistant: Hi...

Hello

Mechanic's Assistant: Hi. How can I help?

Hello, I have a Kia Grand Carnival. About every two weeks a serious problem occurs. When I put my foot on the brake the revs increase and the car accelerates. I have been asked to check the revs when this happens but I'm too busy trying to stop the car from pushing us onto oncoming traffic. Can you help? Sincerely Nicole

Mechanic's Assistant: How old is the transmission? Have you checked the fuel filters?

Have you not encounter this problem? I have the car thoroughly serviced every six months by my auto electrician/car mechanic. Fuel filters checked etc

Mechanic's Assistant: What is the model/year of your Kia?

2009 GRAND CARNIVAL

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

I Have an auto electrician/mechanic check the car regularly. He has thoroughly checked everything in relation to this problem and has come up with nothing. He has asked me to look at forums specifically kia as he does not have time.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I have been asked by my mechanic for specific information regarding this problem so he knows what to look for.

Submitted: 7 months ago.Category: Australia Car
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Answered in 2 hours by:
11/29/2017
AU Auto Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 7 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Australia Car
Satisfied Customers: 5,648
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic Vehicles
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Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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AU Auto Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 7 months ago

hey how are you ,I will try to help you with this issue

what you have here is a vacuum issue ,when pressing the brake pedal it will need vacuum and if we had leak it will cause that surge.

if he disconnect the brake booster vacuum line to it and try does it still surge for testing purposes , now when you disconnect the brake booster vacuum lines the brake will be come hard to press but we want to see if the vacuum is the issue ,if the problem goes away, check vacuum ,booster and vacuum booster check valve

to check for leaks, he can use a smoke test machine, introducing smoke to vacuum and intake system and see if he can find the leak

You are very welcome :)

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Chad Farhat
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Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Australia Car
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