what happened
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New User
Joined: Jul 2009
Posts: 2
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what happened
I was driving up a pretty steep grade and when i got to the top. my truck started shifting up and when it hit final drive it sounded like a semi stoped and put on his air brakes on, and ever since every time i hit passing gear and it shifts into final drive, it dose,s that. anybody have a clue as to the cause, i don't other than that the truck runs fine.its a 2002-350-7.3 turbo i would appriciate any help. THANK YOU TERRY
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Check your air filter box & make sure it's closed up correctly. If it's not, you're sucking dirty air and dusting your motor! If all is well, you could just be hearing the engine the way it's supposed to sound with a clean filter.
But do check it all the way to the turbo. Take the intake tubes off between the box & turbo and inspect. They've been known to crack too. If you're hearing it, something might've opened up on you...
But do check it all the way to the turbo. Take the intake tubes off between the box & turbo and inspect. They've been known to crack too. If you're hearing it, something might've opened up on you...
Tuned
Joined: Oct 2003
Posts: 390
Likes: 0
From: Maine
I would have to wager that you lost a boot from the spider to the intercooler tube on one side or the other. In stock form, they collect a bunch of oil, and either slip off, or develop a crack which is only open when you get on it, hence the air hisss..... You can replace these boots with kits available from some of the sponsors on this site, for heavier duty boots than the stock ones.
Please let us know when you find it.
Please let us know when you find it.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
I thought about that, but the truck's performance goes to crap. He's saying it's fine. Ask me how I know 
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Tuned
Joined: Oct 2003
Posts: 390
Likes: 0
From: Maine
Very true. Mine, however, just had a small split at the bottom of the boot, which made funny noises at me. took me a while to find it! 
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