Ford Explorer: 94 EB 4x4 Explorer fuel pressure problem?

Hmm. How do you know that you have a fuel pressure problem if you never
measured it? It's not what you want to hear, but either spend the $40 on a
gauge, or take it back to whoever installed your pump, if you suspect that
it's not working properly.
I don't know of any 'device' which gives OK to the computer that the fuel
pressure is correct. With some exceptions of new and fancy vehicles with
return-less electronic regulation, fuel pressure control is purely
mechanical, relying on a spring-loaded valve, which returns the fuel that
your engine does not need back to the tank.
Your 'Service Engine Soon' light is supposed to be on before the engine
starts, to let you know that the bulb is not burned. If it's not turning on,
something is wrong with it, but it has nothing to do with fuel pressure.

I would advise you to do some methodical troubleshooting, instead of getting
stuck on fuel pressure alone. How about ignition, for example?


IK

"Sam" <net> wrote in message
news:com... 

OK.... if the CEL isn't proving out AND you don't hear the pump run, I'd
consider the possibility of a problem with the EEC relay or circuit. If the
PCM isn't powering up at key on, then the PCM can't turn the fuel pump on...
Since the relay is only a few bucks, you might try replacing it and trying
it that way.

Your diagnostic process is rather unique and is sure to make the guy at the
parts store very happy as his cash register fills up with your money.


--
Jim Warman
net

"Sam" <net> wrote in message
news:com... 

On Mon, 29 Sep 2003 08:55:16 GMT, "IK" <com> wrote:
 

I do not mind spending the money to measure the fuel problem. When
the engine turns over and over and does not start...a good sniff of
the tail pipe is a good indicator for the presence or lack of gas in
the mix. No gas is present in the mix when this is happening. THis
is a fuel problem.

 

The bulb is not burned out. When ever I experience the problem I am
having which is the engine turns over and over without
starting....every episode of the turning the ignition on...I notice
that the service engine soon light never comes on like it is supposed
to. EVERY successful start of the vehicle is precipitated by the
service engine soon light coming on like it is supposed to and then
going off once the vehicle is running. There is some significance to
that.



 

Thanks for your input. I believe I have done a pretty good job of
paying attention to my vehicle. I believe that because of my anal
approach and alert observations I will get this problem resolved and
save myself a lot of money. With the help of yourself and others who
have replied this problem will be solved soon. I really appreciate
the time you and others take to give me your input.
Since the problem can never duplicate itself by any means other than
it just doing it.......not a certain temperature....not a certain
amount of gas in the tank....not a certain incline I park the
vehicle....no certain time vehicle parked........I am finding it hard
to believe that I am loosing fuel pressure since it is so sporadic in
the episodes. Someone else posted a reply about some relay, etc
and I think I will spend the dollars and replace.

I am not a professional ford mechanic and do not have a plethora of
test equipment at my disposal...with that in mind I take the approach
I am taking.. You guys are really giving great feedback and I thank
you !!!!!


Sam Cederas
Raleigh, N.C.

Wife's 94 had exactly same symptoms. Replaced fuel pump relay, no
problems starting since. Good luck.
George

Sam wrote: 

Yep, I had a similar problem with my '93 Sport. No power to the fuel pump.
Replaced the relay (about $3 at O'Reilly) and all has been OK since then.


"Jim Warman" <net> wrote in message
news:8YUdb.25913$telusplanet.net... 
the 
on... 
the 

Sam:

I also have a 1994 model, and I can always "hear" the fuel pump run for a few
seconds when I turn the key to "on". I didn't read in your description that
you hear the fuel pump running to presurize the fuel rail. Do you?

-Steve ('94 EB 4x4)


In article <com>, Sam <net>
writes:
 

I have not noticed. Let me tell you what I have just done tonight. I
went and replaced the fuel pump relay and the EEC Relay. Gonna see
what happens now. Others have posted how they had similar problems. I
am going to take the old ones apart.

Let you all know.

Thanks for the posts!
-Sam Cederas
Raleigh, N.C.


On 30 Sep 2003 13:07:19 GMT, commonman (SASCHOCH) wrote: