Alright, I'm new to upgrading fuel systems and I didn't know that the fuel pressure needs to be relief? and EFI fuse need to be pulled from the fuse box? I just went ahead and installed new 550cc RC injectors, Aeromotive AFR, and Walbro 255 fuel pump. Now, when I go and start the car after installing all those goodies in, the car won't start..I'm getting NO FUEL PRESSURE..I know the fuel pump is working because I've already tested it hooking it up with the car battery charger with 12volts and placing the fuel pump into a bucket of fuel. My question is: How can I get my fuel pressure back??? will replacing the EFI fuse with a new one solve the problem??
No Fuel Pressure
- Thread starter supranatural
- Start date
Only if it's blown...
So what all did you actually do while changing everything out? Sounds like you have something disconnected that you don't yet realize is...
So what all did you actually do while changing everything out? Sounds like you have something disconnected that you don't yet realize is...
Yep^^^^^ Open your hatch, lift the panel for the spare tire, and look under the cap that goes to your fuel tank to make sure you plugged everything in.
supranatural;1075532 said:
I'm a bit confused. Are you trying to start the car with the EFI fuse out? If so, you're car will never start until you put that fuse back in.
i got the same issue no fp unless i jump wires in the diagnostic box. what gives isnt the fuel pump suppose to kick out when u turn the key on. im just getting done puttin in my fresh motor and what not. it worked with the walbro before rebuild
supranatural;1075532 said:
Have you tried adjusting the AFPR? I don't believe they come setup in the box. Did you get a gauge with it? Try turning on the key and jumper the fuel pump test terminals and adjust it.
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i have the same problem i dont have fuel pressure unless i jump the diag box.
what would i have to look at to fix this
what would i have to look at to fix this
Jaguar_5;1085936 said:
thats weird because most cars i have messed with the fuel pump kicks on when the key is in the on position so it can prime the fuel system
I'll tell ya what's weird. Nah, never mind....
The fuel pump doesn't run until the key is in the start position. Thereafter it runs only as long as the engine is receiving CPS signals on a turbo motor or air is flowing through the AFM on an NA. While many cars do prime for a bit with the key on every one made since around the early 80s has to use employ some method of shutting the pump off if the engine stops. It's the law, designed to prevent you from becoming crispy after a collision...
The fuel pump doesn't run until the key is in the start position. Thereafter it runs only as long as the engine is receiving CPS signals on a turbo motor or air is flowing through the AFM on an NA. While many cars do prime for a bit with the key on every one made since around the early 80s has to use employ some method of shutting the pump off if the engine stops. It's the law, designed to prevent you from becoming crispy after a collision...
It depends on the regulator to hold the pressure.
Seem like they're missing this little point...
Seem like they're missing this little point...