Anti Theft System-Car Wont Start

03GT_Hybrid · February 19th, 2008, 07:42 PM

I tried to install new spark plugs and when I went to start the car it turned on but then just stalled out. The car will turn over but it wont run. The theft light is blinking really fast and I have herd of this happening but I haven't been able to figure out what to do. How do I get my car to run again. I need to have answers by tommorow because I am probably bringing it to Ford so anything will help. Thanks

B0B · February 19th, 2008, 08:05 PM

try unhooking the battery for 5 minutes then try again. if that doesn't work, try using a different key if you have a spare!

96GTRagTop · February 19th, 2008, 08:07 PM

the car wouldn't crank if it was the theft system......

03GT_Hybrid · February 19th, 2008, 10:49 PM

Originally Posted by B0B

try unhooking the battery for 5 minutes then try again. if that doesn't work, try using a different key if you have a spare!

Tried both, no go.

bbkbadboy · February 20th, 2008, 06:32 PM

this same thing happened to a friend of mine on his 96 GT i think he either pulled his alarm fuse, or cut the wires and it started right up and kept running

steve_stang2003 · February 20th, 2008, 06:41 PM

Originally Posted by 96GTRagTop

the car wouldn't crank if it was the theft system......

Actually depending upon the year, the car might crank.
Here is a comparison of the various PATS systems:

Passive Anti Theft Diag TSB 99-26-6

Try a different key.
Could also be the transponder in the steering column.
Do you have remote start system or a NON factory alarm?

To clear an unrecognized key you have to put a good key in for 30 seconds to Run position (IOW don't crank it).

steve_stang2003 · February 20th, 2008, 06:42 PM

Originally Posted by bbkbadboy

this same thing happened to a friend of mine on his 96 GT i think he either pulled his alarm fuse, or cut the wires and it started right up and kept running

That won't work for a 99 + car..
The PATS information is stored in the cluster AND in the ECM.
It's a fairly sophisticated, although buggy, system.

ujslost · February 20th, 2008, 08:41 PM

could be transponder , which is easy to swap. and or the eec fuse, its a large yellow 20 amp fuse under the hood see if its blown

Volstang · April 3rd, 2008, 11:47 AM

check for correct wire order

Volstang · April 3rd, 2008, 11:48 AM

wow didn't realise how old this is.

February 19th, 2008, 07:42 PM	#1
03GT_Hybrid Regular 2003 GT/ 4v Swap Join Date: Oct 2007 Location: Mahwah, NJ Posts: 107	Anti Theft System-Car Wont Start I tried to install new spark plugs and when I went to start the car it turned on but then just stalled out. The car will turn over but it wont run. The theft light is blinking really fast and I have herd of this happening but I haven't been able to figure out what to do. How do I get my car to run again. I need to have answers by tommorow because I am probably bringing it to Ford so anything will help. Thanks __________________ 2003 GT 1999 4v swap Full Bolt ons

February 19th, 2008, 08:05 PM	#2
B0B Hardcore Enthusiast 2001 Mustang GT 14.14@100.7 stock Join Date: Dec 2006 Location: Milton, WA Posts: 1,110	try unhooking the battery for 5 minutes then try again. if that doesn't work, try using a different key if you have a spare! __________________ 2001 Black GT 5speed (DD) 05 Suzuki SV650S (55mpg+wheelies on demand ) www.myspace.com/jeepwheelerbob

February 20th, 2008, 08:41 PM	#8
ujslost MM Fanatic Join Date: Mar 2007 Location: Albertville, AL Posts: 3,703	could be transponder , which is easy to swap. and or the eec fuse, its a large yellow 20 amp fuse under the hood see if its blown __________________ 1997 Mustang Gt Convertible for sale. Triple black, great condition and unmolested! http://www.moddedmustangs.com/forums...like-most.html

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February 20th, 2008, 06:32 PM	#5
bbkbadboy Newbie Join Date: Feb 2008 Posts: 16	this same thing happened to a friend of mine on his 96 GT i think he either pulled his alarm fuse, or cut the wires and it started right up and kept running

April 3rd, 2008, 11:47 AM	#9
Volstang Regular 2004 Mustang GT Convert. Join Date: Jul 2007 Posts: 79	check for correct wire order

April 3rd, 2008, 11:48 AM	#10
Volstang Regular 2004 Mustang GT Convert. Join Date: Jul 2007 Posts: 79	wow didn't realise how old this is.

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