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08 Mustang GT Auto hesitaion

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Old 10/8/17, 08:18 AM   #1
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08 Mustang GT Auto hesitaion

Hello I am having a long term issue with my 08 Mustang GT Auto that has been going on for a couple years. I have been trying to figure it out myself and even had it at the dealer but said they couldn't figure it out either. The issue I'm having is with my car having a very bad lag or hesitation during normal take off. It is so bad that the car barely moves until pedal pressed almost to floor. I'm also hearing a different gurgling type sound from exhaust while doing this as well. The crazy part is that sometimes she runs like a charm. I also noticed while driving one day that it seemed to get worse when I going around a curve. I recently saw some threads with similar issues and it was stated that it was the fuel pump. I need help please!!
THINGS REPLACED SO FAR:
1. FUEL FILTER
2. GAS PEDAL ASSEMBLY
3. COILS AND PLUGS
​4. THROTTLE BODY WITH NEW TPS
5. MAF SENSOR
6. TOP 2 O2 SENSORS
7. CHECKED VACUUM LEAKS
I've had tune redone a few times to no help!!!
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Old 10/8/17, 08:21 AM   #2
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has it shot any check engine codes during any of this?
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Old 10/8/17, 08:33 AM   #3
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Yes I've had a couple of lean codes but they haven't returned in some time now.
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Old 10/8/17, 09:01 AM   #4
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Quote:
Originally Posted by SilverSkoundrel View Post
has it shot any check engine codes during any of this?

Yes I've had a couple of lean codes but they haven't returned in some time now.
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Old 10/8/17, 09:24 AM   #5
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that is quite odd. I haven't ever really come across these cars having fuel pump issues but im a newb so that doesn't say much. how many miles are on the car?
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Old 10/8/17, 10:34 AM   #6
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57,000 miles
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Old 10/8/17, 02:21 PM   #7
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even more odd with low miles
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Old 10/9/17, 06:21 AM   #8
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clean the throttle body?
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Old 10/9/17, 08:01 AM   #9
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Quote:
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clean the throttle body?


he said he replaced the throttle body altogether
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Old 10/10/17, 04:13 AM   #10
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he said he replaced the throttle body altogether
Yeah throttle body replaced. It feels like something is pulling back on my car when I try to accelerate. Doesn't do it all the time. Here's a link to guy with exact same issue and was diagnosed as fuel pump.
http://www.allfordmustangs.com/forums/2005-2010-mustang-gt-tech/325122-does-sound-like-bad-fuel-pump.html#/topics/325122?page=1
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Old 10/10/17, 06:28 AM   #11
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he said he replaced the throttle body altogether
oh..
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Old 10/10/17, 10:02 AM   #12
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fuel pumps are expensive eh?
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