I have a 2002 ford explorer xlt 4.0 sohc.i just purchased this vehicle from a guy.the vehicle ran but rough due to a intake manifold bolt being stripped which could not be tighten i could not get to the bolt so i cracked i ended up cracking the manifold i replaced it wiith a used intake aswell as replacing the spark plugs before changing intake vehicle ran better after replacing intake manifold it sounded good took it for a test drive and it had no power and stalled three times after getting it home i put the original throttle body and iac back on it stated up but ran horrible could barely give it and gas and it would stall it has spark and while cranking i pressed in on the fuel valve and had fuel come out.now it just cranks but will not start.spray carb cleaner in intake start for a second shut back off.im at a loss and any advice would help so much

 

You need to be careful assuming fuel pressure is good just by depressing the schrader valve. The only way to verify it is with a gauge that measures actual pressure..

There is no wire to connect to make the fuel pump run. What you can do is connect a test lamp to the fuel pump power supply and see if the fuel pump runs when the engine is being cranked over.
.Power to the pump does go through the fuel pump relay that is grounded by the PCM when the engine is either cranked over or running.
That power does go through the inertia sw on to the pump.

 

Thank you for your responsw as stated it was running but now wont even start ,starts for a brief second with throttle body cleaner i will have to purchase a fuel pressure gauge are you thinking fuel pump went out all the sudden

 

Instead of buying a gauge that you might use only once, why not check with some of the auto supply stores and rent one to use ?

If the fuel pressure is lower than specified, AND you decide to replace the pump assy yourself, make sure you have the necessary tools to do the job.