vibration

[CAE79]

I have a 1985 Ford Bronco 351. While idling, it will run smooth for a little bit and then the truck will vibrate and then run smooth again. I am trying to get it to run smooth while idling. Any help would be great.

 

[Bully Bob]

Are you sure it's not the A/C compressor kick'n in & out..?

Just a thought....I feel mine cycle....

 

[CAE79]

I was told that my ac compressor doesn't work, so I wouldnt think that would be it.

 

[firelt90bronco]

My truck does that sometimes, especially when it sits for a while.

 

[rebel offroad]

mine does the same thing . .. . every time something uses juice like my fan and radio its starts doing that . . .. . i used restore and some fuel injector cleaner

 

[snowman74]

I have a 1985 Ford Bronco 351. While idling, it will run smooth for a little bit and then the truck will vibrate and then run smooth again. I am trying to get it to run smooth while idling. Any help would be great.

Can you be more specific with the type of vibration you're having? Where does the vibration seem to be coming from? Does it shake the truck a little or a lot?

Snowman74 >-

 

[mbtech2003]

was 85 efi???