Car issues after bad mechanic experience?

90,000 MILES • 3.5L • 4WD • AUTOMATIC
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AARONSM99
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  • 3 POSTS
I recently had the brake pads replaced and rotors turned. As well as transmission fluid changed, fuel treatment, coolant change, alignment, rotation, brake fluid changed, and oil change. Leaving the shop the car shook violently when braking. Took it back and they replaced the rear rotors. They had done a bad resurfacing job. A few days I noticed the front rotors looked rough like they had never resurfaced them at all. Took it back and they replaced them. Now the next day, the car jolts as if being pulled back when riding at around 35-45 mph. It will be going smooth and then have a jolt every few seconds. As though it is being tugged. It also makes a faint but audible wub wub wub noise as the wheels rotate that I didn’t notice before.
Aug 3, 2026 at 8:42 AM

What to check next

Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.

Document the symptoms and notify the shop promptly, even if they are currently absent. Request inspection of the recently serviced wheel and brake assemblies, including fastening, hub and disc seating, runout, caliper operation and tire condition. If those checks are satisfactory, have the shop distinguish a wheel-speed-related vibration from an engine or transmission event. Verify the transmission fluid specification and level after the recent service. Avoid further driving if severe shaking, pulling or abnormal braking returns. The recent work provides a useful inspection checklist. A written check now is more valuable than assuming that temporary improvement proves the issue has repaired itself.

Guidance references and applicability

Brembo: Brake noise and vibration https://www.bremboparts.com/europe/is/support/car/maintenance/noises-and-vibrations-113941 General support for checking disc mounting, hub condition and runout. These checks do not establish that the braking system caused this owner's intermittent jolting. ZF: Transmission-oil service information https://aftermarket.zf.com/sg/aftermarket-portal/faq/faq-oils/ General support for correct fluid selection and level. This is not a Chrysler, Chevrolet or Honda transmission specification, nor evidence that those vehicles use a ZF unit.

Read the replies · Discussion summary and reported outcome

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STRAILER
  • ✓Experienced Mechanic
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Hello, it sounds like the rotors are not right, like they didn't clean the hub before installing them. Also, is the check engine light on? Please upload a short video of the problem so I can see what is going on. I want to give you the right repairs and not send you off in the wrong direction.
Aug 3, 2026 at 10:42 AM
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AARONSM99
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Hello, the check engine light is not on. I’m at work right now, but I can upload a video later today. We took 3 drives and the jolting persisted through these yesterday, but after that and into today the car has not been doing the jolting anymore.
Aug 3, 2026 at 10:45 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,594 POSTS
Hmm, it might have worked its way out, if it has an issue try to get it on video, that would help
Aug 3, 2026 at 10:55 AM
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AARONSM99
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Will do, I would just hate to assume it’s fixed then the issue comes back up and the dealership not take responsibility because too much time has passed.
Aug 3, 2026 at 10:57 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,594 POSTS
You have 12 thousand miles in most cases FYI.
Aug 3, 2026 at 12:03 PM

Discussion summary

Car issues after bad mechanic experience?

After multiple maintenance services and subsequent rotor replacement, the owner reported intermittent jolting at 35-45 mph and a rotating wub-like noise. The jolting later stopped temporarily. No inspection identifying its cause was reported.

Reported outcome: The owner reported that the jolting stopped temporarily. No confirmed repair was documented.

The timing does not by itself establish responsibility or identify the faulty component. No general warranty mileage or repair guarantee is asserted.

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