Yeah since the car has sat so much it could be a rotted rubber vac line on your bypass

 

i dont think its the vacuum lines, due to the car idles fine. and i took the bottom part of the airbox off, and it was clean, so ill check the pipe up on top.

 

You never know. If its the lines to the bypass valve, the car would still idle fine, as the default position is open. Under load (and vacuum) it closes the valve = boosties.

If your tires are dry rotting, I would not be surprised if your vacuum lines were as well.

And it probably isn't post-maf, because my tire used to rip off the lower intake above the maf all the time, and let me tell you, the car idles like a spooked horse with unmetered sir after the maf.

Cars are finicky, but I would say to replace all your vacuum lines to check for the problem. Cheap and easy, and it definitely won't hurt anything.

 

well turns out my lines are weather cracked, but im not sure if there leaking. dont fell any air, or anything. maybe under boost they are, cause it does go up to 4 lbs of boost, then probaly dies off.. but if this fixes it, thatd be great! And thanks for the info man! big help.

 

Well if that is the case man then chances are high you have pin holes and you won't see them, or feel them because they can be stupid tiny... Car runs like total ****! With bad or leaky vacuum hoses I hope this fixes your issue man..

 

You won't feel vacuum, because it's sucking air in. Especially when the holes are small.

 

these are the lines you guys are talking about right?

 

Yep, they could very easily be leaking.

Be careful, those nipples break easily

 

alright. thanks man! if you weren't for you, I wouldn't have even looked at the vac lines. lol hope this does the trick!

 

heres a update. I fixed my car with 4 dollars worth of vaccum line! I couldn't belive it! im boosting a steady 11lbs , and couldn't be happier lol thanks for all the input and help!

 

Oh nice dude! U know its funny i replaced both those lines the other day because MY car was running like **** at idle lol! Still kinda does, thinking of replacing that thing on top of the m62 and whatever the other line goes to on the drivers side of the block... Just for good measure.

 

Awesome! Glad it worked.

And to think you were ready to buy a new bypass valve!

 

The SCIP sensor?

 

 

I cleaned my maf sensor, and throttle body, and my idle jumping around went away. so maybe that would fix the idle.

 

is that pic of that sensor thing that the lines go to YOUR car. cause if so, why is it zip tied, and I looked at my car and its up on top, not under.

 

We modified the coil pack harness to run a 2step and decided to put it there

 

That's your EVAP purge solenoid, Rice.
I had a bouncey ass idle before I replaced that thing. I still gotta do some vacuum lines like you guys,

http://www.crateenginedepot.com/Coba...67-P17635.aspx

 

I'm surprised the CEL didn't come back after u reset it. I thought a vacuum leak should always throw a code if there's a leak even if you clear it.

 

Those cars are so goddamn nitpicky it's not even funny anymore. My bouncing idle came back so I'll probably change all the vacuum lines too.

 

nope. never came back on. Im glad it was a easy fix though lol

 

Thank you! Gonna replace that sucker just for peace of mind!

 

the vac lines are so cheap, its worth doing lol

 

Where'd you get yours done, Vatozone?

 

yup autozone. 4 feet for 4 bucks.