Being that your heat shield was removed, this would not cause your concerns. I suggest you have a professional inspect your vehicle. Check your cruise control servo, and have your check engine light checked for codes.
〉 Answered on Jul 8th, 2013 by Amanda J. Pierce, MBA "AJ", Certified Mechanic, Project Coordinator; Primavera Scheduler at VIGOR Alaska Industrial Shipyard & BizzM3ch Solutions
〉 Answered on Jul 8th, 2013 by Barb Petrey, President - DBK Enterprises Inc at Jiffy Lube