{"id":6461,"date":"2021-05-19T12:00:24","date_gmt":"2021-05-19T19:00:24","guid":{"rendered":"https:\/\/mitchell11.wpenginepowered.com\/blog\/shopconnection\/suretrack-community-fix-cabriolet-shimmy\/"},"modified":"2025-01-03T08:35:57","modified_gmt":"2025-01-03T16:35:57","slug":"suretrack-community-fix-cabriolet-shimmy","status":"publish","type":"shopconnection","link":"https:\/\/mitchell1.com\/shopconnection\/suretrack-community-fix-cabriolet-shimmy\/","title":{"rendered":"SureTrack Community Fix: Cabriolet Shimmy"},"content":{"rendered":"

\"\"Real Fixes from the SureTrack\u00ae<\/a> expert information resource are documented issues from actual shop repair records and community discussions. Read on to see how SureTrack can help you correct issues that are not easily diagnosed using OEM information alone. SureTrack is available at no additional cost in our ProDemand<\/a> product.<\/p>\n

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Older convertible vehicles can be prone to vibrations but when you also have brake pulsing, it may not just be the flexible body causing the issue. SureTrack community member wilhiteauto<\/strong> had an older Audi Cabriolet in the shop that had brake pulsation and a shimmy at highway speeds. The replaced all the brakes but still had the issue. They posed the question to the community, and with the help of fellow community member DAG1365<\/strong> and others, they were able to resolve the issue quickly.<\/p>\n

The following Community Fix summarizes the interaction between members of the community that led to the solution.<\/p>\n

Vehicle<\/strong>
\n1994 Audi Cabriolet 2.8L<\/p>\n

Title<\/strong>
\nVibrations at low and highway speeds, turned new brake rotors.<\/p>\n

Complaint<\/strong>
\nCustomer complains of vibrations and pulsing of brakes.<\/p>\n

Diagnostic Steps Performed\/Parts Replaced<\/strong>
\nTest drove vehicle and at low speed you can feel the brake pedal kind of pulse, and at highway speeds you get a bad shimmy\/vibration. Found bad tie rods and replaced. Inspected all other front end parts and could not find any noticeable problems. Pulled front rotors off and cleaned all mating surfaces and did not change problem. Also checked the balance of the tires and got them rebalanced. Also checked for out-of-round tires\/wheels all are good. Replaced all brake parts including pads, rotors, hoses, calipers, and master cylinder. Still no change. Running out of ideas and looking for any other input.<\/p>\n

Best Answer from Community Member DAG1365<\/strong>
\nHave you checked run out of rotors to make sure they are not out of round or need machining flat? Have you checked cradle\/frame mounts, engine not moving (mounts), be sure ball joints and control arm bushings are good. Does system have ABS unit? If so, you may try to drive with ABS module unplugged.<\/p>\n

Cause<\/strong>
\nHad the new rotors checked for run out on brake lathe and found that they needed to be turned to correct it.<\/p>\n

Correction<\/strong>
\nTurned rotors on brake lathe to correct run out issue and vehicle vibrations and brake pulsing is gone.<\/p>\n

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SureTrack\u00ae adds to the power of ProDemand\u00ae<\/a> with an exclusive combination of real-world knowledge and powerful diagnostic tools, all wrapped in an interactive community of professional technicians. Designed to help automotive shops increase accuracy and efficiency from diagnosis to completed repair, the industry’s most comprehensive repair information resource is just a few clicks away.<\/p>\n

Want more? Here’s how you can see more Real Fixes in SureTrack:<\/strong><\/p>\n