1984 ford ford motorhome w/460 v/8,has sat for 3 ? years. well i got it running with a new fuel pump.so now i can't get it to move.it has a "parking brake release"button,but it dosn't seem to do much. i can't see how you set the emergency brake or how to release it...?the ignition switch seems loose and you have to tweek it some to get the starter to ingage.also the shifter doesn't line up with the gear.ex.it can read R but is really on netural.when in reverse it reads P,ect.its like one "gear"off.so i hope this makes sence.thank you,Todd

Question edited for a bit more clarity ' carbiator ' :>D You must be Australian.
All questions need 'year make model'. Dawning on me, that you mean 1984 FORD F-250! Ah, and 'Out new fuel pump I' should be 'Put new fuel pump 1'? No one proof reads in America or the Antipodes!
Question moved to correct category.

What is a 'fizgram'?

Check the fuel pump relay for correct operation. If there are two pumps, there should be two relays. You can swap one for the other as an easy test.

https://www.google.com/search?q=1984+ford+f250+fuel+pump+relay+location

..

Hello Anita
I remember seeing this post! I think I may have answered it but not sure. It may be a glitch, we do get posts vanish. The reason I remember is because I have been helping a guy called Ed Z with his E350 motorhome. Tag yourself on his post and introduce yourself. He is very capable at fixing his engine.

https://www.fixya.com/recreational-vehicles/t29845025-everyone_ed_first_time_aboard

..

First off let me explain the way the pump operates, the only time the pump gets power is when the engine is being cranked over to start it or when the engine is running of course. If you want the pump to run just with the key on remove the relay and install a jumper so the pump is always powered.

Ford

get your car fix right now

The fuel pump relay is under the hood and it is green.

You say you redid the whole fuel system which means what? From the sound of it the in line fuel filter may be blocked. If you replaced the pump this would be ruled out, if you were not in the tank the strainer on the pump may be blocked. Without knowing what "replacing the complete fuel system entailed" this is where I would start.

I know this might sound odd but try replacing the ignition switch. I have a 86 c class e 350 and could not get the front fuel pump to run for the longest time. After changing everything else, I decided to change the ignition switch, and believe it or not the front pump came on and started working the way it is supposed to.

It sounds like you might have a clogged catalatic converter on the exhaust system.

I'd be tempted to have fuel pressure checked, if at all possible, when it quits. If nothing else, carry a can of quickstart with you, and when it quits, remove air intake at throttle body inlet, and open throttle plate and give a good squirt of quick start, then try to start it. If it starts for a second or 2, then you know you have spark, but no fuel. I've seen fuel pumps work good while cool, and cut -out when it gets hot. Then sit and let pump cool off for 20 minutes or so, then pump up to pressure again and away we go, until it gets hot again. You might also find if you park in the shade, you'll get further, or even on a full tank. Another good idea would be to change fuel filter in case fuel pump is working too hard pushing fuel through a plugged filter, and causing low fuel pressure.

On a 300cc / 4.9L has two fuel pumps both elec. one in gas tank and one on fram rail. On a 351 / 5.8L has one elec. fuel pump on fram rail and one mechanical type on drive side front of engine block.On 460/7.5L could have elec. fuel pump one on fram rail one in gas tank or mechanical type.Hope this was helpful. Let me know.