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Why could my 1989 Volvo be making a knocking noise near the engine?
Wiki User
∙ 8y ago
-Crank bearing
The main crank bearing within the engine may be headed to bearing heaven. You may also hear it more loudly while accelerating and with more load on the engine. It would also knock in sync with your RPMs. (The higher you rev, the faster the knock)
-Motor mounts Also a possibility. The knock would occur with bumps and/or shifting into or out of gear. (Most noticeable changing the selector from reverse to drive) Get a friend to shift it as such while you watch the physical engine itself. If you can hear and spot the sound, and see the engine sway or shake a lot from the shift, you may have found the problem as well.
-Miscellaneous parts Do keep in mind that I or anyone here can not properly diagnose your problem seeing that it's based on your judgement of the sound. It could be a ball joint or other parts if it's not the engine itself.
One simple thing to look at: check the oil level. If it's low, the engine will start to make knocking noises. However, left in that condition too long will result in some form of engine damage.
Wiki User
∙ 8y ago
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Could be a rod knock. Your bearings slipping in the engine.
