Starts well when cold and does not when hot

[djpanfire]

I went to the archives and saw that some of u guys ran trough this problem to: the explorer starts well when cold and does not when hot. And I do not mean overheating. It cranks but wont turn over. Sometimes it will turn over but most of the times... U wait a while depending; it can be from 20-30 min to hours or ... anyways till it cools off a little and starts well back again. But I do not know if any of u found thew solution or have the solution. The only thing I can add to this problem that I also have is that I realise each time I have this problem taking out the pump relay to shut it off makes the car start. It cranks a little longer then usual (like 1 or 2 seconds more) then starts on the littlt amount gas on the system.
I just have to put back the relay in place before it dies. But even if it dies ; when put back the relay and start it again it will turn over and work fine. But u got to open your hood each and everytime..sucks
Anyone knows wha's going on
PS: the pump relay is,to my opinion, at the time is very hot

 

[MrShorty]

Your symptoms sound consistent with a ruptured diaphragm in the fuel pressure regulator (FPR). Pull the vacuum line to the FPr and check for gasoline (If there's gas there, the FPR needs to be replaced).

 

[YourNameHere]

I'm having similar issues. Mi
ne will start, but it takes a few seconds longer.

 

[marragtop]

Also, put a new relay in.

 

[djpanfire]

Hey Guys thanks for all ur advices;

I had alredy replace the fuel pump relay (Matter of fact it's the first thing I did when I encountered this problem)

And I also had checked for gas in the FPR vacuum line. Since I had problems with a prior one; it blocked the fuel, there was no return and I was burning gas pumps after gas pumps.
But I still gotta check to see if the actual one is working properly since I did not get it new.

But hey here is what I did after doing a little research
I changed The IAC (Idle Air Control) sensor. The older one was not going High enough on the tachometer
And cleaned my IAT (Intake Air Temperature) sensor

Now I Start anytime anyplace and runs smooth