Compression Ignition Addict
Join Date: Aug 2006
Location: Tallahassee, FL
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Boost while in Park/Neutral?
This may be a dumb question, in fact it may be a "Duh, you're a moron type thing", but I'm learning new things about these turbo-diesels everyday since I grew up around gassers, and I've always believed it's better to ask questions even if you feel stupid. Haha.
In my quest to find my vibration problem, my brother and I found that while in either park or neutral, if you rev my truck you get around 10-15 psi on the boost gauge, and you can see my intercooler boots expanding and contracting noticeably. Is this normal? I thought it was only normal to build boost while in Drive, under load? It's easy to make it read 10 psi when you rev it, if you really rev the t*ts off it to like 4000 I had it spike 15 and almost 20. I was thinking maybe my idle vibration problem had something to do with the VGT. On my stepdad's '04, the intercooler boots barely move when you rev it. On mine it builds boost and you can see the boots expand noticeably.
Otherwise, aside from the idle vibration and 1500 rpm moan, the truck runs normal.
Is this normal?
"That which does not kill us makes us stronger"
"The only easy day was yesterday"
2006 F-250 SC 4x2 6.0
High Idle Mod
Diamondeye 4" Stainless Turbo-back Exhaust