Actually, this engine is not in a Bronco, but it's a 4.9L fuel injected 1990, so I thought you guys may know something.
1990 Ford f150 pickup truck with a 4.9L fuel injected 6 cylinder engine.,
I'm at a loss now. I don't know the history because the person giving me the truck doesn't know either. I did some work that's not relevant here. I changed the fuel pump with a junkyard one. It took a lot of work, particularly removing the one in the junkyard.
Now I need to get it running properly. I can't get it to respond the the throttle. that is, when I get it to start, it's hard to "gun" the engine; in may cough and die.
I tried the self test (http://fordfuelinjection.com/?p=13 self-test, with "ST in" grounded ) and with the engine off (KOEO) I got 556 meaning fuel pump circuit. I didn't do the test while the engine running because I don't know how then. I just learned you start the engine first then ground st1, then look at the codes.
And I don't know where the fuel rail is or the Schrader valve to do a fuel pump pressure test. Anybody have a diagram? Or can someone just tell me? It must be simple to find, but I'm not sure I located it yet.
And what's my next step? Do I test the fuel pressure?
Any suggestions at all will be appreciated.
~~ Nehmo
1990 Ford f150 pickup truck with a 4.9L fuel injected 6 cylinder engine.,
I'm at a loss now. I don't know the history because the person giving me the truck doesn't know either. I did some work that's not relevant here. I changed the fuel pump with a junkyard one. It took a lot of work, particularly removing the one in the junkyard.
Now I need to get it running properly. I can't get it to respond the the throttle. that is, when I get it to start, it's hard to "gun" the engine; in may cough and die.
I tried the self test (http://fordfuelinjection.com/?p=13 self-test, with "ST in" grounded ) and with the engine off (KOEO) I got 556 meaning fuel pump circuit. I didn't do the test while the engine running because I don't know how then. I just learned you start the engine first then ground st1, then look at the codes.
And I don't know where the fuel rail is or the Schrader valve to do a fuel pump pressure test. Anybody have a diagram? Or can someone just tell me? It must be simple to find, but I'm not sure I located it yet.
And what's my next step? Do I test the fuel pressure?
Any suggestions at all will be appreciated.
~~ Nehmo