99GTDropTop

I went to start my 99 Mustang GT today after letting it sit for about 2 months in the garage and it turns over, but will not fire. I tried to give it a little gas thinking the idle air control valve may be going bad, but that didn't work. Also, it sounds like the fuel pump is working. The theft light also seems to be acting normal, it comes on for about 3 seconds when turing the key to ON and also stays on for a few seconds while I'm cranking it. When the key is off it flashes every 2 seconds as usual. I had the battery disconnected for the 2 month period to keep it from running down (which I've never done in the past), so I'm not sure if this could have possibly messed with the computer? Does anyone have any ideas on what the problem might be?

svt99redcobra

is the battery fully charged?, How fast is it turning over?

99GTDropTop

The battery seems to be charged up because it's turning over at pretty much the normal speed.

svt99redcobra

It sounds like a ignition problem or fuel problem. Can you pull a plug to see if it is fouled?

shnyroq

My '00 did this a couple months ago, only mine sat for 2 weeks... After checking everything, it was the fuel pump that had died. Replaced it with a Focus SVT pump and all is good.

Flyingmau5

I jumped in the car this morning after a cold night and my stang refused to turn over. I turned the key one notch and let it sit there for 2 mins and then cranked again. It worked perfectly

99lolagt

you may wanna put some dry gas in it. You could have had some crappy fuel your tank or just condensasion.

99GTDropTop

The car only has 25,000 miles so I wouldn't think the fuel pump would be bad, but who knows. I will definitely check for fuel and spark.

I've never had any problems with it not starting in the past, and it ran fine before I parked it so I guess I assumed I messed up something by disconnecting the battery for an extended period of time since there is so much anti-theft/chip in key/computer stuff on the newer cars.

gt96stang

Did you put any sta-bil in the gas... If not, you might just have some bad gas in the tank..

domesticlover

possibly check your fuel pressure... somewhere around 44psi is good. or check for spark. or bad gas is always up on the list after letting it sit