Violent shaking when coming to complete stop

2008 FORD F-150
120,000 MILES • 5.4L • V8 • 4WD • AUTOMATIC
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KADEN HEWLETT
  • MEMBER
  • 2 POSTS
It does not happen all the time but most of the time when stopping the whole truck just starts shaking really bad. thought it may have been a plug or wire problem so we replaced all of them, but did not help. not sure if it could be IAC valve or what?
Jun 18, 2017 at 6:10 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
scan for codes first then try cleaning throttle plate on both sides with choke cleaner and IAC hole then get back to us if any codes. also, check for a vacuum leak like a hose off /broken/etc.
Jun 18, 2017 at 7:01 AM
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