is my fuel pump dying?

[blcknspo0ln]

hey guys,
whenever i have my MBC set at 15 psi [ especially in 5th gear ] i hit fuel cut on the t2small. it's really odd. the only thing i can put my finger on is the fuel pump. it WHINES like a 255 lph, but if it was[a 255] i wouldn't hit fuel cut right? i think the pump is dying...

what do you guys think


oh yea,
i dont know how accurate this is but before i got my testpipe put on i had a A/F at 14.1 [coasting in 5th] and about 10.2 [WOT 5th gear] and in the o2 voltage reading it would be [.01 coasting 5th gear] and about 1.05v [WOT 5th gear ]

this is on the pen style apexi TT...

 

[v2ner]

i don't think the fuel pump has anything to do with fuel cut.

 

[Enigma_Man]

Yeah agreed. Your car will fuel cut when it sees too much airflow. I don't think that is supposed to happen really with the t-25... especially only at 15 PSI. You very possibly have a boost leak, build a tester, and fix it.

As for the whining fuel pump.. that could be another problem... Are you not sure if it's a Walbro?

-Jesse