YotaTech Forums - View Single Post - Truck starts but quits running in 2 seconds.

Shawn6string · 01-03-2009, 07:47 AM

"you have to have the duct from the throttle body to the AFM connected or it will not turn the fuel pump on." is correct. The reason I posted that is because I tried to crank mine for a couple of hours before i remembered reading in the manual that the AFM supplied a signal to the fuel pump, or maybe it supplies it to the ECM first. I could shoot gas and ether in there and it would run for a few seconds then cut off. But I knew it would run because I already had it running before hand with the AFM connected. I knew it was something simple. It sounds like a fuel problem, If your pump is pumping fuel it could be injectors but bypassing the MAP or AFM or even trying a known good would not be a bad idea. There again I could be totally off on your problem. Abecedarian seems to be on the right track.

01-03-2009, 07:47 AM	#10 (permalink)
Shawn6string Contributing Member Join Date: Apr 2008 Location: Alabama Posts: 195	"you have to have the duct from the throttle body to the AFM connected or it will not turn the fuel pump on." is correct. The reason I posted that is because I tried to crank mine for a couple of hours before i remembered reading in the manual that the AFM supplied a signal to the fuel pump, or maybe it supplies it to the ECM first. I could shoot gas and ether in there and it would run for a few seconds then cut off. But I knew it would run because I already had it running before hand with the AFM connected. I knew it was something simple. It sounds like a fuel problem, If your pump is pumping fuel it could be injectors but bypassing the MAP or AFM or even trying a known good would not be a bad idea. There again I could be totally off on your problem. Abecedarian seems to be on the right track. __________________ 88 4runner 3. don't know--- project 88 4runner 4 cyl auto - Bone stock Plus BFG 31/10/50 JACK'EM HIGH CAUSE FAT CHICKS CAN'T CLIMB Shawn