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Help with 1991 GMC Cutting Out

RJB44

1/2 ton status
Joined
Dec 3, 2005
Posts
238
Reaction score
1
Location
Northern Virginia
My '91 has been periodically cutting out on me causing hard bucks at anywhere between 35-55 MPH. It seems to happen only within the first 10 miles of operation and then seems to be ok. It starts up and idles fine and I pretty much only drive it on weekends. I need to look at this issue this weekend but wanted to know where best to start in terms of easiest/least expensive upward. This past weekend I took the truck out for about 60 miles, most at highway speeds and it seemed fine, with the exception of that first 10 miles or so.

Appreciate the help.
 
Check the TBI section. There have been many discussions that are similar and may help you out.
 
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