problems when under boost

[superiorsupra]

Hey, I have a big problem. When I step on the gas to spool the turbo, the car moves a little and then hits fuel cut. The boost controller is set at stock, and the boost gauge only reads a 4 psi or so before fuel cut hits. It seems like the car is running really rich, because the air/fuel ratio gauge stays at green. The car is hitting fuel cut and the engine check light comes on everytime the turbo kicks. I know fuel cut is at 11.8 psi or so, but it does this at 3-4 psi. Also the car blogs and hesitates when turbo begins to spool.
I've checked all the vacuum lines, intake pipes, exhaust pipes, eletrical wires to the ecu, change the afm, and it still does it. I think it might have something to do with the TPS not working properly. Anyone have any idea on what might cause this. Thanks.

 

[lagged]

check error codes.

 

[mkiii222]

TPS, timing, or boost leak. I thought I had checked my hoses properly a few times, and eventually found that the one I missed/couldn't reach was the one causing my problems.

 

[MDCmotorsports]

Boost leak.....

 

[aye mate]

:withstupi
Make sure you check the 3000 pipe > throttle body.

 

[jtamulis]

Sounds like a cracked IC pipe somewhere (a boost leak). Check the hose
between the 3000 pipe and the throttle body.

Jeff

 

[daledoe]

Ya its a Boost leak I'd say

 

[superiorsupra]

thanks for the info, I will check again later on today and see if it's some kind of leak between the 3000 pipe and the throttle body. thanks again.

 

[superiorsupra]

yep, there was a big crack right between the two clamps on the hose between the 3000 pipe and the throttle body. It was on the lower side so I didn't see it until actually taking the thing off. The car runs fine after replacing that. Thanks a lot guys. Boostin' again :biglaugh: .