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Old 21 Mar 2014, 01:05 pm
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Default pt turbo vacuum leak

Hello I have an 05 turbo with a vacuum leak. I have looked for this leak and cant seem to find it. On the turbo there was a hose missing, I capped it off since I couldn't find the hose. I've looked at the vacuum line diagram it doesn't help much. When I accelerate It sounds like i am sucking in a lot of air somewhere. I have a cone filter so I've always had a whoosh sound but now it's louder then that. Does anyone know where the vacuum line on the turbo goes to or comes from?
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Last edited by cruiserbruiser05; 21 Mar 2014 at 01:09 pm.
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Old 21 Mar 2014, 01:21 pm
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Default Re: pt turbo vacuum leak

Yes you got a line off. Behind the intake hose you should have a similar looking hose connector with a rubber tip plugged on it. If you have a line on it, that might be the one your missing. Follow the lines from the firewall to see what happened to yours.
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Old 21 Mar 2014, 04:32 pm
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Default Re: pt turbo vacuum leak

hows your idle? a vacuum leak should throw that off. If sucking air under light acceleration, an easy start would be to pull the air intake hose attached to the turbo off. They're known to crack at the 90* entering the turbo due to the heat.
Also, if under med to heavy acelleration, it sounds more like a boost leak. A common boost leak is at the hot side pipe/after the turbo to the intercooler. There's a 90* factory rubber hose that has a worm clamp 'STAPELED' the to rubber hose. It always tears and leaks. It's a must replace part and very easy to get to under the pass side front. Then check every hose/line after the turbo for cracks or loose connections. This very common. Replace if needed. Clamp every line with at the very least zip ties or small clamps. For larger hoses, ditch the OEM spring clamps and worm clamps for Tbolt clamps.
Good luck and keep us updated
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Old 21 Mar 2014, 04:45 pm
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Default Re: pt turbo vacuum leak

There should be a greenish looking line that looks very similar to the beige-sh? looking line in your pic. They both should be attached to a rubber junction just above where your pic ends. It's a part of the vacuum line harness that runs across the fire wall to the 3 solenoids on the pass side. If you only have that capped off at the turbo, you definitely have a leak because the other side of that line is open
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FS: '03 GT Elec Blue w/rear suicide doors or '03 auto PCM, S3 turbofold, WGA, 3.5" o2 & 3" DP - make offer
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Old 21 Mar 2014, 04:49 pm
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Default Re: pt turbo vacuum leak

The idle is good. Doesnt sound to be sucking air under light acceleration. When I give it more gas it actually sound's like my bov is going off. But then when I let off the gas it makes its noise. When I checked it there was the one vacuum line missing. I posted a pic of it. But couldnt find a line that goes to it so I just capped it off. Ill check the intake hose this weekend. Also I noticed at idle/rev engine the vacuum gage goes up bit comes right back down. Normally it will stay up as long as im pushing the accelerator.
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Old 21 Mar 2014, 05:02 pm
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Default Re: pt turbo vacuum leak

you're using a vacuum/boost gauge? good to hear
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1st Forward Motion E1 powered PTGT w/Psi-Fi Power pack fuel tuner back in '07
FS: '03 GT Elec Blue w/rear suicide doors or '03 auto PCM, S3 turbofold, WGA, 3.5" o2 & 3" DP - make offer
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Old 21 Mar 2014, 05:20 pm
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Default Re: pt turbo vacuum leak

Quote:
Originally Posted by cruiserbruiser05 View Post
The idle is good. Doesnt sound to be sucking air under light acceleration. When I give it more gas it actually sound's like my bov is going off. But then when I let off the gas it makes its noise. When I checked it there was the one vacuum line missing. I posted a pic of it. But couldnt find a line that goes to it so I just capped it off. Ill check the intake hose this weekend. Also I noticed at idle/rev engine the vacuum gage goes up bit comes right back down. Normally it will stay up as long as im pushing the accelerator.
iirc, one of those line goes to the wastgate, the other to the surge valve/blue plate?
Jerry? Nitro
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'03 GT base w/175k and a 2 speed autostick (read: trans is shot) and powered by a hybrid MOPAR S3 with DSP untuned
1st Forward Motion E1 powered PTGT w/Psi-Fi Power pack fuel tuner back in '07
FS: '03 GT Elec Blue w/rear suicide doors or '03 auto PCM, S3 turbofold, WGA, 3.5" o2 & 3" DP - make offer
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Old 21 Mar 2014, 06:36 pm
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Default Re: pt turbo vacuum leak

Quote:

Hello I have an 05 turbo with a vacuum leak. I have looked for this leak and cant seem to find it. On the turbo there was a hose missing, I capped it off since I couldn't find the hose. I've looked at the vacuum line diagram it doesn't help much. When I accelerate It sounds like i am sucking in a lot of air somewhere. I have a cone filter so I've always had a whoosh sound but now it's louder then that. Does anyone know where the vacuum line on the turbo goes to or comes from?
Here yah go.



This:

Goes to this. (Add a line)


I personally got rid of that whole mess of "factory boost leaks" Its common place on the SRT-4 to get rid of, I did this like 4 years ago on my SRT-4, no issues.
This is what it looks like on my GT now


I was told that the 06 GT's vacuum lines are different and the "factory boost leak" is not there? (Factory boost leak is that big nozzle thing you have to plug when doing a boost leak test.)
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Last edited by 4drturbo; 21 Mar 2014 at 06:43 pm.
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Old 21 Mar 2014, 06:51 pm
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Default Re: pt turbo vacuum leak

Beat me to it.

Jerry

Last edited by wwpptc; 21 Mar 2014 at 06:56 pm.
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Old 21 Mar 2014, 09:27 pm
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Default Re: pt turbo vacuum leak

Thanks for the help guys. Ill check it out tomorrow morning and let ya know what I figure out..
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