shoaf213

This is Marc's mechanic but im having a serious issue with his GS3. I just installed a Supra TT fuel pump and a SAFC-II in his car. The problem is after I installed the Supra TT fuel pump the car idles for about 50 secs. then dies. Im a honda guy and this isnt somthing that usually happens when you install a larger fuel pump. It seems to run a lil rich but I cant keep the car running for the life of me, usually you can keep the car running if it wants to run rich.

Any advice will be highly appreciated to shoot me in the right direction.

AkiD

did you check pump pressure? It sounds like it's priming then starving. Try turning on and off the ignition to prime the fuel line. Do that 6 or 7 times. Then start the car. If it still dies, you most likely have a vacuum leak.

-aki

nyARISTO

Well when i had my supra TT pump i didnt run that long also........ therfore... the shop installed a relay to keep the voltage even!........

in another words put a relay on that pump it helps if that doesnt help ... then check ur pump and try another pump
but vacum leaks wont cause ur car to die out at idle (well thats not true but not in your case )

shoaf213

Thanks again Jeff, the fuse/jumper on the ECU worked. I'd still like to have it work without that, but as long as it's running I'm OK