95 ford taurus fuel problem

[kennyspackers]

95 ford taurus 3.0 v6
The car killed and wouldn't start, it has spark. I put a new fuel pump in and it still won't start, new fuel filter. At first I have good fuel coming out of schrader valve as I continue to try starting vehicle the fuel at valve gets less and less until there is none coming out. I let it sit overnight with battery disconnected and try again in the morning and the same thing, lots of fuel at valve at first then down to nothing.
Is there a regulator or something else I can check? I've been fighting with this for over a month now and I'm about out of ideas, can someone please help.

[shorod]

Welcome to the forum!

It sounds like what you're experiencing is the fuel pump priming the system. When you first turn the key to run, the pump runs for about 1 second to prime the system. If you turn the key off for about 5 seconds, then turn it back to run, the pump should prime the system again.

When trying to start the car, you might try spraying a couple shots of throttle body cleaner into the throttle body. You might also try starting the car with the throttle held slightly open. Also, check for diiagnostic codes. You can do this with a simple jumper wire. You also might want to check all the fuses.

-Rod

[mechhound]

This doesn't really sound like it's your problem but I'll mention it. I assume you pulled the kill switch reset switch in the trunk? I once pulled the fuel tank out of an '87 Taurus for no reason before I realized this kill switch existed. You also mentioned regulator, I have never had a problem with a fuel pressure regulator, perhaps shorod can better inform you than I about this. Just some thoughts.

[Scrapper]

yes there is a kill switch in the trunk they put them in every since the pinto burned some kids up you may want to check it. when your trieing to start it can you see fuel cut off in your dash lites?

[kennyspackers]

Yeah at first it primes the fuel system then for some reason it loses it, and no matter how many times I cycle the key it doesn't come back. It only comes back when it sits overnight with the battery disconnected??? There aren't any codes, is there a regulator that could be causing this, or maybe the computer?

[shorod]

If the pump is running some times, the problem won't be a tripped inertia cutoff switch. That isn't to say that it couldn't be a faulty switch electrically. What you might want to try is checking for fuel pump relay voltage to and from the fuel pump relay portion of the Constant Control Relay Module (CCRM). If the relay is attempting to energize the fuel pump but the pump is not running or not getting power, that narrows your search considerably.

I'm not a professional technican or even in the car industry, so I can't say that it's uncommon for fuel pressure regulators to fail. However, from your description I agree that the regulator is not likely your proplem.

As for relying on a dash light if the inertia switch is tripped, that's not a real common indication. There are not many cars that have this feature, and I'm pretty sure your '95 Taurus does not. Since the inertia switch kills the power to an electric fuel pump, I doubt they've used them since the Pinto, but I'm sure the Pinto was in the engineer's mind when he/she decided such an inertia cutoff was a good idea.

-Rod

[Fordhcw]

You should measure the ohms of the ignition coil primary and secondary windings. The coil may be only making a weak spark. Check the distributor cap for carbon tracks. Check the sparkplugs for fouling and clean if required. Check the ohms of the sparkplug wires, including the one from the spark coil to the distributor. The ignition module or the sensor in the distributor may fail, but usually this results in no spark. Have you changed any of the sparkplug wires or did you remove the distributor? Improperly reinstalling a distributor may result in the wrong timing, which will prevent ignition.
The schrader valve is where a fuel presure gauge may be attached. What is you fuel pressure?