Brad Clayton Posted January 20, 2008 Share Posted January 20, 2008 I have seen some push rod motors grenade due to overrevvin'. Anyone ever check the old vaccum style cruise control units by hooking the supply line to the feed line directly on the servo? If so you know that the servo will pull the throttle and thus you have checked a lot of stuff very quickly (I used to love this short cut). Well I own a 5.0l Ranger and was doing something under the hood one day at the shop and had the servo unhooked. when I hooked everything backup I crossed the vaccum lines....I started her up and by the time I could get back to the key I swear she hit 7000 on the tach. You wanna talk about getting everyones attention fast, it had open headers at the time. Quote Link to comment Share on other sites More sharing options...
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