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efi starts, but dies immediately
Posted 18 April 2004 - 10:54 AM
i pinched off the return line, after the regulator, and it does the same thing, but... theres so much fuel pressure, that doing this makes the lines leak, at the hose clamps. so it seems like i have adequate fuel pressure.
and since its starting for a second, my injectors must be opening, then the computer is telling them to shut off.
could this be something as stupid as a tps? andybody have anything i can try?
thanks in advance
Posted 18 April 2004 - 03:15 PM
also something to think about, are you sure its running out of fuel? maybe it is shutting off because of something else. maf sensor maybe, thats the ways a car acts when you unplug the maf. also does it have a new fuel fiter?
Posted 18 April 2004 - 03:52 PM
is the fuel pump coming on? my mpfi turbo will kick the relays, but no pump, i had to make a toggle switch. the problem is between the wiring between the relay and the pump
Posted 18 April 2004 - 03:57 PM
i also think it was the maf.
Posted 18 April 2004 - 05:32 PM
Posted 18 April 2004 - 08:16 PM
Posted 18 April 2004 - 10:54 PM
Posted 19 April 2004 - 10:36 AM
I vote maf as well. if the computer does not see air flow it will shut down the fuel pump. its a safty feature. I know the flaper style mafs actually have a little switch inside for this purpouse.
not sure how the hot wire mafs do it but its the same theory.
of course wiring could be the problem as well if the signal never gets to the ecm.
Posted 19 April 2004 - 10:44 AM
Posted 19 April 2004 - 11:39 AM
One thing to be aware of is that the ECU is designed to turn on the pump for a certain period of time while the engine is being started. After this period of time the ECU expects to receive a signal from the distributor. When it dose the ECU will turn the pump back on, if it doesn’t the pump will stay shut off and the engine will run until it uses up what's left of the fuel in the system.
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