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GM Tech (Cam)
GM Tech (Cam), Pontiac Technician
Category: Pontiac
Satisfied Customers: 2373
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Pontiac Sunfire: I have a 2002 Pontiac sunfire when I start

Customer Question

I have a 2002 Pontiac sunfire when I start it up it has a knocking sound and also when I press the accelerator it knocks but sounds fine at normal idle also has a loss of power
does the engine to be replaced or is it something simple
Submitted: 1 year ago.
Category: Pontiac
Expert:  Ron Z. replied 1 year ago.
Hello! Welcome to the site! Thanks for coming! I'm Ron Z. I'm here to provide as much information and insight as I can, to best answer your question.
Would you say the knocking noise is coming from the underside of the engine?

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