2005 gt mustang engine problem - Ford Mustang Forum
 
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post #1 of 7 (permalink) Old 05-23-2012 Thread Starter
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2005 gt mustang engine problem

I have an 2005 gt auto.The car has about 25000 miles.My wife says when she sometimes tries to accelerate the pedal goes to the floor and the engine does not rev up.The battery has been replaced recently but no other problems,any suggestions will be appreciated.thanks Charles

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post #2 of 7 (permalink) Old 05-23-2012
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Throttle position sensor. Or something in the throttle body has a defect. Or the hydraulic pump for the gas pedal might be going out


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post #3 of 7 (permalink) Old 05-23-2012
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Welcome to AFM! Is this at road speed after the car has been running for a while or does it just happen any time? There was a TSB on the fuel pumps on the earlier S197s where the car would fall flat on it's face when trying to accelerate... it would develop air bubbles in the fuel pump.

I'll move this for you to get you some help.
 
post #4 of 7 (permalink) Old 05-23-2012
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See if recalibrating the gas pedal and throttle body helps:

1- Turn the key to the 'ON' position so all of the dashboard lights illuminate, and the chime starts(Do not start the engine).
2- Wait for the chime to stop.
3- Turn off all electrical accessories.
4- Press the gas pedal all the way down in one smooth motion while counting to 5 (1001, 1002....).
5- Slowly release the gas pedal while counting to 5.
6- Wait 6 seconds.
7- Turn key to 'OFF'.
8- Wait 6 seconds.
9- Repeat these steps twice more.
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post #5 of 7 (permalink) Old 05-23-2012 Thread Starter
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theproblem occurs after a short drive when she gets near home,stop sign/mailbox at home and will not take fuel when trying to move the car.as you see on the mileage it does not get driven very much.also the throttle flaps have been cleaned and a new fuel filter before the last problem.ill try the resetting of the pedal and let you know.also no severice engine light on.thank you very much
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post #6 of 7 (permalink) Old 05-24-2012
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Quote:
Originally Posted by SWAT_Zombies View Post
Or the hydraulic pump for the gas pedal might be going out
Hydraulic pump? ..... It's a fly by wire electronic throttle. no hydraulics involved. just sensors and servo motors.
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post #7 of 7 (permalink) Old 05-24-2012
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Quote:
Originally Posted by cole9181 View Post
theproblem occurs after a short drive when she gets near home,stop sign/mailbox at home and will not take fuel when trying to move the car.as you see on the mileage it does not get driven very much.also the throttle flaps have been cleaned and a new fuel filter before the last problem.ill try the resetting of the pedal and let you know.also no severice engine light on.thank you very much
I had the fuel pump TSB issue, it only really was in issue after a long drive on the freeway, and then giving it the gas. It would fall on it's butt, and then imediately roar to life. Usually the fuel pump TSB (vapor lock) occurs when it's hot. Does the car sit outside in the sun when the problem occurs?
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