Can't accelerate and warning light and the fail safe mode and check charging system message are showing. Please any advice.
20

Asked by annmsal1120 Jul 02, 2016 at 05:56 PM about the 2005 Ford Mustang V6 Premium Coupe RWD

Question type: Maintenance & Repair

Hello my car is a 2005 Mustang V6 with no modifications. I recently noticed I
had a battery leak from the negative terminal. I replaced the battery and went
to start my car, it started but will not allow me to accelerate. I am also now
getting the engine warning light and the fail safe mode and check charging
system message are showing. Please any advice.

6 Answers
165

Jonathan answered 8 years ago

Did you clean the terminals before you put them on the new battery? Could be a bad connection. Also check the grounds and clean them. These cars are known for weak alternators as well. Is there an engine light/code that you can pull? Fail safe can be cause by a number of things, typically when a sensor measures a parameter and it is out of spec.

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20

annmsal1120 answered 8 years ago

My car is back on the road. The throttle body unit had to be replaced.

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20

Lilbit06 answered 6 years ago

I have a ford expedition the dash is reading engine failsafe mode and the o/d off light keep coming on while I'm driving what could be the problem

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30

GuruCJNHT answered 5 years ago

Hey when your mustang didn't move on d what did you change

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vince answered 5 years ago

I think it could be inside a body cuz if butterflies are open or closed

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