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George H.
George H., Hyundai Technician
Category: Hyundai
Satisfied Customers: 2033
Experience:  Hyundai Gold certified, ASE Master tech 15+ years
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Hyundai Accent: I need help with a 99 Hyundai Accent

Customer Question

I need help with a 99 Hyundai Accent
Submitted: 1 year ago.
Category: Hyundai
Expert:  Amedee replied 1 year ago.
Hello and welcome! My name isCustomerand I would like to assist you. What is it you need help with on this vehicle?
Customer: replied 1 year ago.
I am the service manager at a Hyundai store in Arkansas and we are having problems that no one (field service engineers, technicians, nor tech hotline) can help us. There is a knocking noise that came from the engine after we replaced the transmission and compressor. We checked the compression and it was abnormally low so we replaced the engine with a used engine. Knock was still present. Keep in mind the noise only happens when the vehicle is in drive and the compressor is on. We also just replaced the idle control valve.
Expert:  Amedee replied 1 year ago.
Thank you for that information. I take it your talking about the AC compressor? The noise is not there with the AC turned off? IS that correct?
Expert:  Amedee replied 1 year ago.
Hello??
Customer: replied 1 year ago.
Correct. Only when the ac is on and the vehicle is in drive.
Expert:  Amedee replied 1 year ago.
And the noise is not coming from the belt or the AC compressor?