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86 F150 shakes bad at 1000 rpms

  #1  
Old 01-17-2008, 10:37 AM
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Default 86 F150 shakes bad at 1000 rpms

I have and '86 F-150 with a 5.0L 302. At about 1000 rpms it shakes real bad. If i mash the pedal or let off, it smooths out. It also shakes a little while idling. I'm thinking IAC Valve maybe? any thoughts?
thanks
 
  #2  
Old 01-17-2008, 02:14 PM
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Default RE: 86 F150 shakes bad at 1000 rpms

check your motor mounts, see if the motor is pulling at certain rpms.
 
  #3  
Old 01-21-2008, 06:28 AM
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Default RE: 86 F150 shakes bad at 1000 rpms

Motor mounts are fine. I replaced the IAC valve and nothing. I was told EGR valve now but am hesitant to spent another 80 bucks. I appreciate the help.
 
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