Check Engine Light came on last night :(

[V8JamesGT]

I'll start off two weeks ago. I was low on fuel... it read about 25 miles until empty and I'm leaving a parking lot and my car starts idleing real low and dies. I make it to the gas station and put gas in it and it starts running fine again. Then on sunday I'm low on fuel again. It says 42 miles until empty and it does the same thing it did two weeks ago. So I put gas in it and it runs fine again.

So I was on my way to work last night and I'm at a stop light and the car starts idleing really low and dies while my foot is pushed in on the clutch all the way. Fuel level is well over half a tank. Then I start it back up and it runs really rough and doesn't speed up like it should and the check engine light comes on and the message center said something about engine running in some mode or something so I turned around and took it back home.

Now I remember someone here saying that the fuel pumps were going bad on a lot of these new mustangs. Does it sound like that or could someone have poured sugar or sand in my gas tank?

I'm calling the dealership first thing in the morning. I'm hopeing they will send a tow truck and pick up the car tell me whats wrong with it.

*I forgot to mention that my car is completely stock. No mods yet.

 

[bigcat]

does not sound like the fuel pump TSB.

 

[The Fang]

I had herd once that always running em low on fuel was damaging to the pumps, Why i'm not sure.
I try to keep mine full cause it just seems to cost less.

 

[bigcat]

I had herd once that always running em low on fuel was damaging to the pumps, Why i'm not sure.
I try to keep mine full cause it just seems to cost less.

i think that the fuel lubricates the pump.

 

[06BLR85]

i think that engine mode is the get you home mode when only 4 cylinders are working.

 

[V8JamesGT]

What does the fuel pump TSB say?

 

[bigcat]

PM me your email address and i will send it to you.

 

[iskwezm]

I had herd once that always running em low on fuel was damaging to the pumps, Why i'm not sure.
I try to keep mine full cause it just seems to cost less.

1)because as it runs low, the sediment in the tank is sucked up and 2) the fuel is used to cool the pump as it builds up heat.

 

[V8JamesGT]

1)because as it runs low, the sediment in the tank is sucked up and 2) the fuel is used to cool the pump as it builds up heat.

I wouldnt think there would be many sediments in the tank of car with only 7300 miles on it.... I also thought the fuel filter was supposed to catch any sediments?

 

[V8JamesGT]

The dealership calls me this morning and says they start it up and it ran fine and there was no check engine light on! But when I had it towed to the dealership the check engine light WAS on. Watch them just tell me that nothing is wrong with it and I try to drive it home or to work the next day and it screws up again!

 

[bigcat]

would not be the first time....

 

[V8JamesGT]

Car still occasionally runs rough.... The other day I was stopped at a light and the RPMs kept going up and down between 400-900RPMs yet I wasnt giving it any gas? Then it died, and I restarted it and it ran fine.

 

[FL2005GT]

Check out this thread for a little bit more on erratic RPM. Don't know, man. Fuel pump problem? Throttle position sensor problem? Bug in ETC code or wiring? Unless the dealer can duplicate, good luck getting an answer.

http://forums.stangnet.com/showthread.php?t=658559

 

[V8JamesGT]

I read that thread and it sounded like their cars were doing the same thing mine was only they had tuners and my mustang is bone stock...

 

[JTGrant]

fuel is used to lubricate and cool the pump.

 

[celticstanger]

What codes did the dealership report? If they they say they got none, find another dealership to look into it. If they didn't pull/clear the codes, they'll still be in there (CEL and failsafe should have recorded a bunch).

If you know someone with a tuner who can pull these codes for you, check em out here - http://www.obd-codes.com/trouble_codes/ford/index.php