13 replies to this topic

[xtonyx]

95 850 turbo.

when i purchased the car several of the turbo hoses were shot, who knows for how long.

rigged up some (mediocre at best) hoses a few days after until i actually got around to fixing it properly.

i've replaced all of my vacuum lines, throttle body gasket, put a block off plate where the cbv was and installed a bov, i've got a catback, and with a manual boost controller screwed all the way down im boosting 10psi with spikes to 13 with full boost not coming on until a little over half way through the gear.

is my turbo toast? i wouldn't be suprised.

[Kibim]

In my limited experience of toasty turbos, they make a horrible wailing sound when they're over the hill. Sounds more like you have an electronic/management problem.

(what I know about turbos is quite dangerous, so don't take my word for it.)

[Bay13]

Try taking off the vacuum line/boost line that goes to the waste gate solenoid, and see if your boost gets higher. Careful, don't want to run around with 20-25psi, this is just a test.

[T5BRICK]

95 850 turbo.

when i purchased the car several of the turbo hoses were shot, who knows for how long.

rigged up some (mediocre at best) hoses a few days after until i actually got around to fixing it properly.

i've replaced all of my vacuum lines, throttle body gasket, put a block off plate where the cbv was and installed a bov, i've got a catback, and with a manual boost controller screwed all the way down im boosting 10psi with spikes to 13 with full boost not coming on until a little over half way through the gear.

is my turbo toast?  i wouldn't be suprised. 

you're boosting 10PSI. i'm pretty sure not getting full boost until 3000RPM is normal.

Try taking off the vacuum line/boost line that goes to the waste gate solenoid, and see if your boost gets higher.  Careful, don't want to run around with 20-25psi, this is just a test.

Rich, could you explain here this boost line is? i'm not sure where the waste gate solenoid is.

[MrWinkey]

I think it's the middle line on the BCS...LIke stated its for TESTING ONLY!!!

[550]

or if your like me and your turbo wont boost higher than 12 psi anyway... just leave it unplugged :

But this will work to tell you where you problem is... it is the one that when you look at the turbo the wastegate rod goes to it.

[550]

dougy fresh, I'm saying my turbo wont boost over 12 psi... not his but I can see it was badly worded

[745turbo]

In my limited experience of toasty turbos, they make a horrible wailing sound when they're over the hill. Sounds more like you have an electronic/management problem.

(what I know about turbos is quite dangerous, so don't take my word for it.)

hey thats interesting, id never heard they sounded different but i could SWEAR mine sounded different upon realizing it was toast. it was a loud houl instead of a sahrp whine. it was high pitched but had more sound to it. anyways, doesnt sound like your turbo is toast, check for oil in your interecooler piping. thatd be a sure sign. if you found a lot. Also look for oil loss

[xtonyx]

blah.. still dont get full boost (like 11 pounds w/ mbc torqued almost all the way down) until like 5k rpm.

im gonna keep digging for boost leaks but blah.

[thelostartof]

have you checked your intercooler for leaks ... we found a leak on a friend intercooler, 3" long crack in the front behind the lower outlet. would get around 6psi and spike to 11psi on shifts

jbwelded it and it held 13-15psi so far .. we'll see how long that lasts


but yea check the intercooler

[xtonyx]

i fear pulling my intercooler out again after all the problems i had last time

wouldnt be suprised if it had a leak though.

poop.

[thelostartof]

just check the endtanks @ least as those are easy to find leaks on