2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

rattling noise after tune

Old 03-30-2008, 03:35 PM
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Default rattling noise after tune

i took the car into the dealer on saturday, and i had returned the car to stock tune with 87 gas 2 days earlier. so today i ran out of the 87, and put 93 in, and loaded the tune at the gas station. when in higher rpms, i hear a rattling noise from middle-end of the car. after i shift it goes away, and at high rpms starts again. im not positive it wasnt there before the tune, but i heard it for the 1st time today.

also, dealership guy told me, that he knew a tune was loaded. even though i drove 60+ miles after returning to stock and had 87. (i left the bbk on). is that possible?
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Old 03-30-2008, 03:40 PM
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Default RE: rattling noise after tune

sounds like pinging to me
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Old 03-30-2008, 04:03 PM
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Location: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)
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Default RE: rattling noise after tune


Try filling with another tank of 93. Or load a lower octane tune and see if it goes away.

As far as the dealer is concerned, I don't give a ratz azz if he knows I have a tune (and my dealer knows). Let them challenge you when it comes to a warranty issue. If they figure you to be a repeat customer they won't hassle you.
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