Slow crank 2015 mustang gt - Page 2 - Ford Mustang Forum
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Quote:
Originally Posted by MustangLife View Post
. . . . Most parts stores will test the batt and alternator free of charge to let you know the health of each. With that said go get the alt tested.
yeah but, in my experience at least, those battery tests are a waste of time and don't actually show when a battery is weak . . . I figured with the age of the car it probably was about due for a battery anyway and it's a fairly cheap troubleshooting step

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1st in with the suggestion to go to another shop. Aftermarket exhaust!?!?!?!? Unless it is something bizzaro that ain't what I would say and I would want some explanation before I agreed with/accepted that guess..

somewhat dangerous if you don't know what you are doing (have spray bottle of water and fire ext there) but try starting fluid that will point you towards fuel or spark issues.


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Quote:
Originally Posted by Jg5.0hh View Post
I have a 2015 mustang gt
It has 40,000 miles
It takes about 6-7 seconds to start
Once it starts it drives good without any problems
I took it to a Ford Dealer and no codes came up, they checked everything and it all came up good
They told me it could be my aftermarket exhaust, any suggestions?
Sounds to me like fuel pumps weak. 😂 it’s your exhaust, what crap is that.


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Great information shared......
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Check fuel pressure at fuel line hight pressure and low pressure. If vehicle sit overnight and have difficulty start up, could be leaking check valve or leaking fuel injector.


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