Bad Boost - Diesel Forum

CRJMALOTT · 07-30-2008, 05:04 PM

Sometimes but not all times, My truck will start out lacking power and when I really accelerate, the boost guage will peg. When I let off quickly, the needle jumps and it makes a whoosh,whoosh whoosh noise. It only does it in extreme street tune form an excaliber tuner. Any ideas?

dieseladdict69 · 07-30-2008, 06:45 PM

do you have an intake on it???? if sooo thats where the noise is comming from its excess air comming off the vaines of the turbo id say i had the same noise with mine

**InnovativeDiesel** · 07-30-2008, 07:09 PM

The noise is normal, it's the air returning back through your intake when you let off.

CRJMALOTT · 07-31-2008, 04:15 PM

Thanks for your replies but what about the boost guage pegging? It only does when it's not acting right.

XXcumminkillaXX6.0 · 07-31-2008, 05:09 PM

well thats normal but be carefull u mite over spin the turbo and i will get unbalanced and shred. happened to my friend 6.0 trubo.. i sugest getting a new turbo im getting mine soon..

**InnovativeDiesel** · 07-31-2008, 06:37 PM

If you are pegging the boost gauge, your turbo may be sticking closed. I'd have it tested out at the dealer. They can run a test that will test the turbo.