3.8L engine knocking under load.

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Varies with RPM. Quietens at idle. Seems to come from top center. Sounds like air pump or similar clatter.

Apr 27, 2011

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RepairPal Certified shops can diagnose and repair your 2000 Ford Mustang. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

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3.8L engine knocking under load.

What is your question?

Varies with RPM. Quietens at idle. Seems to come from top center. Sounds like air pump or similar clatter.

cfour in Montgomery AL

Apr 27, 2011

1 Reply

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Mike Choon Apr 27, 2011

If it is not internal engine failure, I've seen flexplates crack and make all kind of weird sounds, especially under load.

Visitoron Apr 29, 2011

Thanks for your reply, However, I do not know what a flexplate is.

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Popular Answer

What are the best Ford repair shops?

RepairPal Certified shops can diagnose and repair your 2000 Ford Mustang. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.