TPITuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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I just got my 87 trans am gta with a 5.0 about a week ago now. when i bought the car it didnt run the guy told me that he parked it about a month ago and it ran fine then. So i thought it would be the fuel pump because i couldn't hear it priming when i turned the switch. So i replaced it and the fuel sending unit. Once I got the old fuel pump out I tested it and it was good. What would keep the pump from running? I thought maybe a relay but I dont know where they are and i dont know how I would test it if I did know where it was!
check the ecm fuse by the battery and see if you are getting spark could be the spark control module
Quote:
Originally Posted by soxbaseball
I just got my 87 trans am gta with a 5.0 about a week ago now. when i bought the car it didnt run the guy told me that he parked it about a month ago and it ran fine then. So i thought it would be the fuel pump because i couldn't hear it priming when i turned the switch. So i replaced it and the fuel sending unit. Once I got the old fuel pump out I tested it and it was good. What would keep the pump from running? I thought maybe a relay but I dont know where they are and i dont know how I would test it if I did know where it was!
im getting spark because the car will run with ether. when i turn the key no dash lights come on i dont think this is normal. what would cause this to happend????
the only way it getspower is if i send power to it though the bottom left pin in the obd plug and its getting plenty of pressure to the fuel rail when i do that its just the injectors arnt getting signal to release fuel into in cylinder
on the positive battery cable, there is a red wire follow it untill you find a fuseholder with a 20 amp fuse in it, replace that fuse and you should be good to go.
this fuse controls the ecm and fuel pump. No idiot lights on is the tip off.
__________________ 89 Formula, Maui Blue,355 TPI(used to be TBI) Auto, B&M shift kit, afpr, 3.42 Richmond gears, auburn posi. 3" Flowmaster cat back system.
86 Camaro Z28 LB9 T-tops pretty much stock
current ride 2004 Cadillac Deville.
Hold a finger on a fuel injector while a buddy cranks the motor, you should be able to feel the injector clicking. If not, replace your ignition module as it also controls the fuel injector pulse.
__________________ 89 Formula, Maui Blue,355 TPI(used to be TBI) Auto, B&M shift kit, afpr, 3.42 Richmond gears, auburn posi. 3" Flowmaster cat back system.
86 Camaro Z28 LB9 T-tops pretty much stock
current ride 2004 Cadillac Deville.
