Had a someone work on my engine and is worse off than what it was. It starts ands idles fine, revs fine, just no power when you put it in gear. The oil sensor connector is mia oil switch is on top of motor just no plug. Vacuum pump hose is missing. Where does it go and can it cause power loss? Front of motor he tried to put a high pressure oil line for a turbo.left of the water pump. Dealer says oil feed line, but unsure of where it goes or does. Any thoughts,please.

 

Wow that sounds pretty butchered.

The vacuum line likely operates the turbo and with out it you won't have any boost. You should have a line from the vacuum pump (lower pass side of accessory system) to the rear driverside (where the boost solenoid is located) then back to the turbo actuator.

The ops needs to be hooked to its harness to operate the lift pump unless you are running a relay from key on power.

 

He tried to install a turbo.took turbo off and put right intake and exhaust manifolds back on. So now the line that comes off vacuum pump is gone. Took a oil line off the front right of alternator and left of water pump. Plus I think he messed up the fuel injection wiring. It's a mess.

 

Your oil line descriptions are very confusing.

You might have to acquire vacuum tubing and fabricate the system for the bank of solenoids on the drivers side. Look for pics of a proper setup. Maybe one of the other guys here has them on hand.

The front solenoid is the boost solenoid and it goes to the wastegate actuator. That one should give your power back. Just make sure you are getting strong vacuum from the pump, and the actuator works freely. When working properly, the rod should be pulled into the actuator assembly and tough to move when idling.

 

Even Chevy had no idea about the oil line. The mechanic said it was a high pressure oil line and he had connected that to the turbo. Turbo is gone.

Do you know where to get a wiring harness for 1995 6 5l chevy ?

 

First off, This isnt a gm 6.5 caused issue, this is your cheap *** letting some back yard mechanic butcher your truck. Please modify your thread title to reflect reality. Look up heath turbo master, the vacuum system isnt worth saving and if he lost stuff you are boned. You are in trouble if someone has caused your engine all this chaos and you need to slowly back away from what they have done. You have to have the oil pressure sensor plugged in to run your oil pressure gauge AND just as importantly your lift pump. Without the lift pump, you are fucked. period.

 

I knew this wasn't a gm caused problem and I took my truck to a reputable shop. So if paying $10000 to swap motors is being a cheap *** you can **** off. Shady *** mechanics plague your profession and you all do nothing to police it. So even good shops **** people over. Now if your here to help people help, people don't come on here for a life lesson. A simple vacuum diagram would have sufficed. Thanks

 

6.5 problems surprise.... reputable shops dont do shitty work and if something left wrong take it back thet should be happy to make it right. These only use vacuum for a couple things, you shouldnt need a schematic to hook the vacuum pump to a solenoid and the solenoid to the wastegate.

 

You need a high pressure oil line going to the turbo. What year truck are you working on?

 

Unfortunately, the engine in our Suburban was a swap also. We were lucky enough to get the truck from a dealer that took it as a trade in from an older gentleman that wrote down everything in the manual with the mileage. However the problems with these motors is they have electrical issues like crazy. But on this topic I have to agree with jrsavoie that is sounds like they forgot or removed your high pressure oil line to the turbo. All engines whether gas or diesel need "pressure" to run efficiently. Also, even the most reputable shops don't know a lot about how to handle the 6.5L. I don't know where you are from but if you want people who know how to work on the 6.5TD then call D & R Racing in Morris, IL (815)941-4530. They are the only ones to ever give us results next to our helpful neighbors.
My husband and I have been working on ours for 2 years now and have only one shop we trust here in Illinois. Believe me I personally know that the 6.5 is a pain in the! Try being stranded with a newborn!