On my 99 cummins 2500 I have lost all boost and a great deal of power, I suspect it to be a faulty wastegate, you can hear a loud hissing from in the cab and that is it under acceleration, it is not a intercooler pipe knocked loose or anything the wastegate actuator rod seems to be very stiff to move and only moves with a wrench on it. Has anyone else encountered this problem. Im just looking for a little insight before I go tearing this apart. Im thinking about putting some pressure to the vaccum hose to see if anything moves but i just wanted to know if anyone has any knowledge on this subject. Thank you.

 

I honestly think that you merely have a leaky boot.

It's a fairly common problem that over time the boots get hairline cracks in them. They'll appear fine, but when you inspect them closely you'll find the crack.

I may be wrong, but it's easy to check and it's free. If you DO have a bad boot, I'd probably get a set of silicone ones to prevent from having the problem again.

Check these guy's out

http://intakehoses.com/Merchant2/mer...gory_Code=HHS6

BTW - There's a Cummins diesel section on here. You might have better luck posting your questions there next time.

 

i didnt know about that section but thank you for the advice. I have checked the boots numerous times with not luck.

 

All 4 of the boots were fine? How about the clamps? They go bad too.

Check out this set from Geno's

http://www.genosgarage.com/prodinfo....ber=BD-1045210





BD INTERCOOLER HOSE KIT ('94-'02) DODGE

Item Number : BD-1045210

Unit Price: $223.25
Detailed Description

The BD Intercooler Hose Kit consists of Blue Nomex Silicone hoses designed for 75 lbs. of turbo boost with spring-loaded clamps to hold them in place. Custom built for your Dodge Cummins Turbo Diesel truck.

BD Intercooler Hose Kit - DODGE ('94-'02)