Towncar Won't start!!please help

[blvddav]

Car ran out of gas.put gas in it,won't start.Replaced filter,replaced fuel pump,nothing....Relay??

[v8_dave]

Welcome!

So it just keeps cranking without firing huh? I would check your fuel pump fuse, running it dry might have blown it, or worse, your pump.

[AZLincolnMercury]

So it just keeps cranking without firing huh?
Yeah, need more info...

double check the inertia switch in the trunk as well.

[Dereck]

Car ran out of gas.put gas in it,won't start.Replaced filter,replaced fuel pump,nothing....Relay??

Hi Blvddav

Welcome dude :cheer:

Can you hear the fuel pump buzz for a second when you switch the ignition on?

You may have to put in up to 4 gallons of gas before the fuel pump will prime.

Regards

Dereck

[pepsi2185]

I agree with derek add at least a few gallons and prime at the fuel rail.

[Tman70]

Having replaced my tank, I will say that with it reading empty, there are still 3 gallons left in the tank. The fuel pump IS cooled by the gas, so don't run it low for too long. If you rsn out of gas, you probably sucked up every piece of debris in the bottom of the tank and plugged up the 'sock' at the base of the filter and/or the fuel filter itself. Change them and you should be all set.

[wilincoln]

As silly as it may sound, do you in fact know that you do not have fuel to the rail? And for that matter how do you know that you ran out of fuel? I only ask because I remember back in around 87 we had the exact scenerio with a customers car. One of the mechanics changed the fuel pump (extremely expensive at that time) as well as pump relay. The car still would not fire. All this time he thought that the pump was running because "it had to be" ! It turned out that the collision switch was tripped on this car! It wasn't well known or documented at the time either.

Have you verified that it is not getting fuel by simply taking a a squirt bottle with a bit of gasoline and spritzing into the air horn? If the the car pops or fires at all then yes indeed you may be short fuel.

If it dos not pop or fire than you are looking at an ignition problem or fuel problem. Determine which.
Do you have fuel pressure on the rail? Check at the schroeder valve. If so then again, ignition or electrical.
If you do have fuel on the rail do the injectors have a pulse? If not why not etc.
Continue to determine if you have fuel presure at the rail, if not check to see that the pump has voltage when you first turn the ignition key on. If not check wiring and relay etc.
Back to the basics friend.

There may be a cause and effect relationship in many cases but I have seen far too often individules go off in the wrong direction because of the lack of basic troubleshooting tecniques and presuming a problem exists istead of diagnosing the problem.
Case in point in the first paragraph here.

Best Wishes
Ron in WI

[AZLincolnMercury]

As silly as it may sound, do you in fact know that you do not have fuel to the rail? And for that matter how do you know that you ran out of fuel? I only ask because I remember back in around 87 we had the exact scenerio with a customers car. One of the mechanics changed the fuel pump (extremely expensive at that time) as well as pump relay. The car still would not fire. All this time he thought that the pump was running because "it had to be" ! It turned out that the collision switch was tripped on this car! It wasn't well known or documented at the time either.


Yeah it's always something simple isn't it...

A passenger in my brothers old Ford Ranger kicked the area under the dash (don't ask me why) which tripped the inertia switch and killed the engine. Well he had the vehicle towed/serviced and all along the inertia switch simply had to be reset. :rolleyes:

[blvddav]

Welcome!

So it just keeps cranking without firing huh? I would check your fuel pump fuse, running it dry might have blown it, or worse, your pump.
replaced fuel pump/filter,checked fuse,and inurtia switch isnt tripped,and i am getting fuel at the rail....still wont start

[skinhead]

Hmmm, this might be a long shot, but it sounds like the crankshaft position sensor. Check to see if you get spark.

[blvddav]

Hmmm, this might be a long shot, but it sounds like the crankshaft position sensor. Check to see if you get spark.yes its gettin spark

[blvddav]

Hi Blvddav

Welcome dude :cheer:

Can you hear the fuel pump buzz for a second when you switch the ignition on?

You may have to put in up to 4 gallons of gas before the fuel pump will prime.

Regards

Dereck yes.i hear fuel pump,very faint,it only has 2 gal. of gas,i'll put more....

[blvddav]

As silly as it may sound, do you in fact know that you do not have fuel to the rail? And for that matter how do you know that you ran out of fuel? I only ask because I remember back in around 87 we had the exact scenerio with a customers car. One of the mechanics changed the fuel pump (extremely expensive at that time) as well as pump relay. The car still would not fire. All this time he thought that the pump was running because "it had to be" ! It turned out that the collision switch was tripped on this car! It wasn't well known or documented at the time either.

Have you verified that it is not getting fuel by simply taking a a squirt bottle with a bit of gasoline and spritzing into the air horn? If the the car pops or fires at all then yes indeed you may be short fuel.

If it dos not pop or fire than you are looking at an ignition problem or fuel problem. Determine which.
Do you have fuel pressure on the rail? Check at the schroeder valve. If so then again, ignition or electrical.
If you do have fuel on the rail do the injectors have a pulse? If not why not etc.
Continue to determine if you have fuel presure at the rail, if not check to see that the pump has voltage when you first turn the ignition key on. If not check wiring and relay etc.
Back to the basics friend.

There may be a cause and effect relationship in many cases but I have seen far too often individules go off in the wrong direction because of the lack of basic troubleshooting tecniques and presuming a problem exists istead of diagnosing the problem.
Case in point in the first paragraph here.

Best Wishes
Ron in WIWhere is the relay located?

[86MarkVIILSC]

If there isn't spark, the ECM won't supply fuel after the intial prime.