1999 Mustang Gt--dashes On Odometer..help!

M

Migo

Member

Jul 22, 2016

3

1

13

Jul 22, 2016

#1

• Jul 22, 2016

• #1

I have a 1999 Mustang GT that turn over fine, but it will NOT start up. Theft light flashes rapidly and has dashes on odometer. I let it sit for 2 weeks and then jumped it off and it started up! as soon as I disconnected the jumper cables....it shut off and will not start. the battery is good getting 12.8V and fuel pump it cutting on. Please help!

 

Az Pete

10 Year Member

Mar 30, 2005

711

18

49

Panama City, Fl.

Jul 22, 2016

#2

• Jul 22, 2016

• #2

Battery should be 14.5 volts when running. I would check the battery and alternator at a local parts store......it is free.

 

Reactions: Migo

wmburns

SN Certified Technician

Aug 14, 2009

5,892

514

204

Houston Texas

Jul 23, 2016

#3

• Jul 23, 2016

• #3

+1 on above. Today's cars simply will not work right without a strong battery and charging system.

Also double check the battery negative terminal and the grounds around the radiator core support. Are they clean and tight?

 

M

Migo

Member

Jul 22, 2016

3

1

13

Aug 1, 2016

#4

• Aug 1, 2016

• #4

Guys,
thanks for your responses! I have been out of state working, but will be back Saturday to check all this out and will keep y'all updated!

 

M

Migo

Member

Jul 22, 2016

3

1

13

Aug 24, 2016

#5

• Aug 24, 2016

• #5

Just an update. It turned out to be the computer. I disconnected it for 5 minutes and reconnected it and it fired up. It only ran for about 5 minutes before shutting of and theft light flashing again. I replaced the computer with a new one and I've not had any issues with it.

 

Reactions: Clinton King