2013 GT Idle question - Ford Mustang Forum
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post #1 of 3 (permalink) Old 05-18-2015 Thread Starter
bseiter98's Avatar
Joined: Mar 2013
Location: Springfield
Posts: 130
2013 GT Idle question

While idling at approx. 750RPM, the engine drops to about 500RPM (noticeably) when one of the engine fans kick on. Only happens when the car is warmed up so it's the higher temp fan. Has anyone else had this problem? It's almost like the fan is drawing too much current or the engine / alternator cannot support it. I have a BAMA tune but I don't think this is causing it. Thoughts or suggestions are appreciated!

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post #2 of 3 (permalink) Old 05-18-2015
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5.0 Coyote's Avatar
Joined: Oct 2010
Location: San Carlos Park
Posts: 2,337
The fan motor is FUSED so I wouldn't suspect to much draw,otherwise the fuse would blow to protect the system,I would be suspect of the tune that it is at fault.

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post #3 of 3 (permalink) Old 05-18-2015
BDM219's Avatar
Joined: May 2015
Posts: 23
You could always remove the tune and see if the idle still drops, process of elimination so to speak. Always start with the easy stuff.
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