4.8 cold start issue...
Thread Starter
Staging Lane
Joined: Mar 2005
Posts: 61
Likes: 0
From: North Dakota
4.8 cold start issue... Ok, so when I cold start my 99 4.8, and I pull out of my parking lot at work, as I accelerate to the speedlimit (45), The truck bucks and acts like it has no power, then all of a sudden comes to life. I've been scanning it with hptuners, but I'm not really seeing anything that just jumps out at me as being an issue.
The only time the truck does this is when it is driven cold. Once its warmed up it's fine. Any ideas guys?
Thanks,
Brendan
The only time the truck does this is when it is driven cold. Once its warmed up it's fine. Any ideas guys?
Thanks,
Brendan
Teching In
Joined: Aug 2003
Posts: 23
Likes: 0
probably going to find the intake gaskets are not sealing when cold. a friends truck had the same problem. if you are scanning with hp tuners, try looking at strims ,and misfires and see if you get any clues. but you prob only have a min or two to scan in the morning i assume? hope this helps
Brian
Brian
