What would cause my motor to shake

Tiny
AZFIREWOMEN
  • 1999 FORD F-150
  • 16,500 MILES

Under load thr motor shakes but smooths out about 65mph. There is a hissing sound at the back of the motor and the service motor soon light came on.

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Tuesday, June 12th, 2012 AT 11:04 PM

2 Replies

Tiny
ASEMASTER6371
  • EXPERT
  • 25,533 POSTS

There is an elbow for the pcv valve on the back of the throttle body that collapses and causes this condition.

Roy

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Tuesday, June 12th, 2012 AT 11:16 PM
Tiny
RASMATAZ
  • MEMBER

Sounds like Mr. Roy is on the money here-Excessive false air leakage-Scan the computer for code/s, lets see what it has to say

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Tuesday, June 12th, 2012 AT 11:40 PM

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