[skatenc123]

Engine malfunction p30ff. Cleared codes. Can't get code to pop back up after multiple pulls. Cobb real time data boost hits 19.2 but vacuum only 0.1 Any advice?

[skatenc123]

???

[007_e350]

Vaccum leak - check vaccum lines, start from under the two solenoids going over to the engine side behind oil filter housing - then check over the solenoids to turbo actuators ... I bought 2 meters to replace, it was leaking under the engine cover

[skatenc123]

I looked at all the easily visible lines and they all look fine. I'll get more into it tomorrow. Weird that I can't get them to pop back up though.

[007_e350]

Originally Posted by skatenc123

I looked at all the easily visible lines and they all look fine. I'll get more into it tomorrow. Weird that I can't get them to pop back up though.

Thats an indication they're brittle and leaking - you'd have to cut them from the nipple and rip them out, make suer u buy ones to replace before you do that though

[skatenc123]

Alrite assuming there's a DIY on here somewhere. Thanks. Will link DIY and results tomorrow.

[RandyFL73]

I would check the two vacuum lines that run from the tube next to the airbox past the oil filter housing over to two hard lines that run under the plastic engine cover. Those are known to get brittle and crack. Mine did and I had the same code.

[GraphiteAZ335]

Check the hard plastic tubing where it connects to the tube running under the intake manifold. Mine had a hairline crack on the locking tab portion, causing vacuum to escape under heavy load (in my case 15psi). I put a zip tie around the clip holding it in place and no more problems. This was after exhausting all other options.. Waste gate check, solenoids, tanks, lines (all), swapping vanos solenoids and cleaning them, and a full check of all connections both hot and cold. It was by coincidence I found it

[skatenc123]

turns out mine is my waste gate pretty much completely giving up.