Vaccum problem??

[H.A.R.T 4G63DSM]

My problem is that my car seems to always bog out. When I drive it sputters and backfires like there is somthing holding my car back. Also when I floor it, the turbo spools but I dont feel any sort of power and on high rpm it just sputters. When I'm in idle, the idle just goes up and down... up and down ranging around 1100 rpm and dropping to 400 rpm. And it only does it sometimes. I brought the car to a shop and they said they I'm leaking vaccum... some vaccum lines arent connected thats why it does that. Not sure though... pls help

 

[Staytuned]

If you have vacuum lines not hooked up you will hear them hiss .....have a listen around. Do you vent your BOV to atmosphere or back into the intake? Always back into the intake unless you have GM maf sensor mod. Check your fuel pump pressure...that could be gone as well. Good luck.

 

[paul s]

Check the above and also plug wires..basically do a tune up and double check your vacuum..

 

[H.A.R.T 4G63DSM]

okay thank guys... yeah i will look around and listen to some hisses, but I think the last time I checked I didnt hear anything.