Discuss 2007 Mustang GT w/ JLT II... Running rough and check engine light is on on AllFordMustangs.com, the place for Mustang enthusiasts.
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2007 Mustang GT w/ JLT II... Running rough and check engine light is on i just got a jlt cold air intake and tune with predator but for some reason it seems to be running a bit wierd and my check engine light is on. im not sure what to do or if its even tuned right. any ideas?
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Quote:
Originally Posted by
alexjuicee i just got a jlt cold air intake and tune with predator but for some reason it seems to be running a bit wierd and my check engine light is on. im not sure what to do or if its even tuned right. any ideas?
First, Use your tuner to read the code and report back here. Then check all of your connections, especially the MAF harness. Also check for any intake leaks downstream of the MAF sensor.
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Make sure you didn't put the MAF in backwards. There is an arrow indicating flow direction.
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Quote:
Originally Posted by
jgard07 Make sure you didn't put the MAF in backwards. There is an arrow indicating flow direction.
Not sure if you can on the JLT or not. But that would certainly do it.
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if that was the case i dont know if he's ever going to come back...
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Quote:
Originally Posted by
stlwagon Not sure if you can on the JLT or not. But that would certainly do it.
Yes you can
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thx for the help, i reinstalled the intake and retuned it. turned out it was the wrong tune, it was at 91 octane but there was a specific one for jlt
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Quote:
Originally Posted by
alexjuicee thx for the help, i reinstalled the intake and retuned it. turned out it was the wrong tune, it was at 91 octane but there was a specific one for jlt
That'll do it every time!
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2007 Mustang GT w/ JLT II... Running rough and check engine light is on 
