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Unique steering issue - need help diagnosing.
So a few weeks ago, I started noticing an odd vibration in the steering wheel. It occurs at speeds above 60mph and only when in normal, non M mode. The car tracks straight with no steering wheel vibration, but when I wiggle the steering wheel back and fourth by only a few degrees, I can feel a vibration that gives the steering a notched effect. As if the electronic steering assist is turning on late or turning on and off.
I turned to the usual suspects, wheel balance, alignment, had wheel hubs and bushings checked and replaced brakes/rotors. No cigar.
Has anyone ever had this issue? Do I need to replace my servotronic valve or clean the steering angle sensor? Any help would be appreciated.
Performance: Bren Tuning ECU Tune [456whp] | Bren Tuning Euro SMG Tune | Custom Section 3 [Vibrant Bullet Mufflers & 3.5" Quad Tips] | Polished Throttle Bodies | Carbon Filter Delete | Ultra Racing Upper Front Brace, Lower 4-Point Brace & Rear Trunk Brace
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Last edited by C7mb; 12th August 2015 at 05:32 AM.