fuel cut, or boost cut, NEED HELP!!

[suprafanatic]

my car has been acting really wierd lately and im either geting a fuel cut or boost cut or somthing like that right at around 10psi....a while back i backed out the air screw in the AFM to help prevent fuel cut.. i was then able to boost up to 15 psi... and a few weeks ago it just started cuting me off at like 10psi and i cant even floor my car with out it hitting the cut and jerking really hard :1zhelp: i know this could be caused by a boost leak but i'v check practicaly every coupler and clamp and tightened them all really good.. problem still there. the car pulls very very hard then all of a sudden feels like i hit a brick wall :S so any advice at all please let me know!!!! thanks!

 

[88YotaTurbo]

air leak some where. recheck

 

[suprafanatic]

do you mean boost leak? or to much unmetered air coming in?

 

[suprafanatic]

the CEL light also comes on when this happens

 

[88YotaTurbo]

too much unmetered air. I may have blown out a weak block off or ripped a intercooler hose

 

[americanjebus]

+1 for ripped intercooler hose, Bov leaking? My money is on the hose under the turbo, those get all kinds of corroded and cracked.

 

[7MGTEsup]

You need to pressure test the system, looks like you have a hole in the system somwhere.

 

[88YotaTurbo]

I just blew a pipe off last week same cause. I went from 10psi to 14-15psi and it start jerking and stalling. Like it wasn't getting fuel like a cloged fuel filter would feel like. But I knew the signs. I pulled over and checked all the piping. They were good. Then i saw a block off cap on the 3000 pipe to cover stock bypass valve routing was blown out Had nothing to fix it quick except DUCT TAPE ----- i love duct tape. Then a went home like granny, trying to keep the car in vac and no boost.

 

[ForcedTorque]

Congratulations! You have reached fuel cut. Now go screw that screw back into you AFM.

 

[drjonez]

Congratulations! You have reached fuel cut. Now go screw that screw back into you AFM.

yes please.

otherwise it will be another "WhY iS my car leakin all srOts of coOOLent out teh TAILpipes?!?!!?" thread....

 

[Keros]

my car has been acting really wierd lately and im either geting a fuel cut or boost cut or somthing like that right at around 10psi....a while back i backed out the air screw in the AFM to help prevent fuel cut.. i was then able to boost up to 15 psi... and a few weeks ago it just started cuting me off at like 10psi and i cant even floor my car with out it hitting the cut and jerking really hard :1zhelp: i know this could be caused by a boost leak but i'v check practicaly every coupler and clamp and tightened them all really good.. problem still there. the car pulls very very hard then all of a sudden feels like i hit a brick wall :S so any advice at all please let me know!!!! thanks!

If you were boosting 15psi at one point, now you can only boost 10, I don't think the position of the adjustment screw has anything to do with it... sounds more like a seal somewhere. Check the throttlebody/3000 pipe cupler, I had a problem there before. Check every clamp and cupler from the turbo right to the valves.

 

[jtran8]

It's boost leaked , i've been there before and i've backed screw out too . Boost leak caused fuel cut ( spark cut ) at lower boost level ; if you already checked upper intercooler pipes then you need to check your lower intercooler intercooler pipes too , or just go ahead and do boost leaks test . Don't forget to check all vaccum hoses , vaccum leaks some times also boost leaks.

 

[suprafanatic]

ok thanks.... ya the screw doesn't have anything to do with it i dont think.. cause that helped me get rid of boost cut before, now i'v got other problems, so most likely boost leak somewhere.

 

[ForcedTorque]

I don't doubt that you may also have a boost leak.........but have you tried screwing that screw back in? It is free to do so. 15LBS is too much boost on a stock CT with your mods. Anything over 10-12 LBS is prone to get you fuel cut, and your description fits fuel cut to a T. I love your car, and it is extremely healthy. Take good care of it.

 

[suprafanatic]

ya i had it back in and still have fuel cut.. i'll check for a boost leak agian.. the 60-1 Ct is going to be here on monday and i'll be putting that in.. i just want to get rid of this problem so i can boost the 60-1 with out hitting the "brick" wall..lol thats what it feels like.

 

[jdub]

the CEL light also comes on when this happens

Did you check what codes are stored in the ECU?