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Check for vacuum at the wastegate. If there is no vacuum then you have a bad vacuum pump, bad wastegate solenoid, or cracked/broken vacuum lines. You need to measure the pressure of your vacuum system. This is the line that leads from your vacuum pump to the turbo. Chances are the Turbo Solenoid is bad but it can be the vacuum that is bad. If the vacuum is bad, then it is a good TurboMaster candidate. If not, then it is up to you to just change the solenoid.

could dryrott in the vacuum lines cause this?:humm:

Just curious...:pca1:

Quote:

Originally Posted by Oilfield_Mafia (Post 214422)

Check for vacuum at the wastegate. If there is no vacuum then you have a bad vacuum pump, bad wastegate solenoid, or cracked/broken vacuum lines. You need to measure the pressure of your vacuum system. This is the line that leads from your vacuum pump to the turbo. Chances are the Turbo Solenoid is bad but it can be the vacuum that is bad. If the vacuum is bad, then it is a good TurboMaster candidate. If not, then it is up to you to just change the solenoid.

Quote:

Originally Posted by bigdaddydiesel (Post 214423)

could dryrott in the vacuum lines cause this?:humm:

Just curious...:pca1:

lol yea

:tttt:

how would i know if i have dryrott? and how would i identify if i have a wastegate. how much pressure should i have on my vacuum system? turbo master candidate ? sorry for the stupid questions i just dont know much about turbos thanks

Quote:

Originally Posted by oak1now (Post 214712)

how would i know if i have dryrott?

If the little rubber vacuum lines are dry or rotten, you have dryrot. just visually inspect the lines..

and how would i identify if i have a wastegate.

You have a wastegate.. its there its the small gold bladder housing on the side of the turbo with a vacuum line going to it.

how much pressure should i have on my vacuum system?

Pick up a vacuum gauge from the local parts store and just check to see if there is ANY vacuum at all on the line. I think it should carry between 3-5 psi.

turbo master candidate ?

Turbo-Master Boost Enhancer 92-95

sorry for the stupid questions i just dont know much about turbos thanks

Always remember, there are no stupid questions... only stupid answers.. You cant learn if you dont ask right?

Hope that helps you some :U:

*edit* -

I noticed your signature isnt filled out.. you truck is a 6.5L correct? All of the information I stated is for the 6.5L TD.. But If I remember correctly, 2000 was a split year, and its possible it could be an LB7 Duramax 6.6 L depending on the manufacture date..

can you tell me what motor is in what manufacture date that way i can identify what i have thanks

nope 01 was first dmax

OK, Thanks for the heads up Danny, I thought it was, but i guess I had a brain fart..

oak, that means that you have the 6.5L TD. So just look over all of your vacuum lines that come off the wastegate, and everything back to the vacuum pump. just a visual.. with it going in and out, it could be any of those things. The Possibly dry rot vacuum lines, bad solenoid, bad wastegate or bad vacuum pump..

Let us know what you find bud!:pca1:

should i be driving it like this? how do i test the solenoid ? wastegate ? and i have to get a vacuum pump tester

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oh also will the turbo-master boost enhancer work on my truck ?