Odd Knock turn the wheel to reverse back?

1999 FORD FOCUS
167,000 MILES • 1.6L • MANUAL
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MYFATHERSSON
  • MEMBER
  • 29 POSTS
Hi

I have a problem with my focus estate/station wagon.

When driving normally, no out of the ordinary sounds. If I pull forwards and the turn the wheel to reverse back, I get a single knock. If I am travelling forward and need to turn the wheel to full lock, I get a single knock.

I have checked ball joints, drop links, and drive shafts but I cannot find anything loose or worn.

Could someone suggest what else I could look at that might cause this?

Many thanks

Kevin
May 10, 2026 at 3:21 PM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
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Hello Kevin,

I have seen the CV axle wear and cause a pop noise but I would check the sway bar links and control arm bushing as well. I would also look is the front strut top mounts/bearings. If these lock up they will pop. You will need a flashlight and to raise the car up to check these, please go over this video to help.

https://www.youtube.com/watch?v=xLFn_bMkZc0

1. Steering rack mounting bolts/bushings — rack movement can cause a single knock when steering load changes.
2. Inner tie rods — sometimes they knock only under steering load and do not feel obvious during a basic shake test.
3. Subframe bolts/bushings — a slightly shifting subframe can make one knock when loading/unloading the front suspension.
4. Brake caliper bolts/pads — loose caliper hardware or pads shifting in the bracket can make a single clunk during direction changes.
5. Coil spring ends — check for a broken lower coil or spring not seated correctly in the perch.
6. CV axle outer joints — even if they feel tight, a worn outer CV can knock at full lock, though it usually clicks repeatedly rather than making one single knock.

Here is a guide to help as well

https://www.2carpros.com/articles/popping-noise/

Please upload a short video in your response of the problem, so I can see what's going on .

May 11, 2026 at 5:06 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.