My2007 mustang gthas a xcal2 tuner and a jlt intake installed on it, ive had these installed for over a week, and well it all started friday evening, i was on my way to the perfomance shop to get them to put my steeda springs on, and i was at a red light and kinda launched, but i didnt feel like i launched hard, but my tires spun a good bit which is kinda uncomman, (i had traction contol off). but as i went through second gear i felt like i had major lag, and my car began to act very unresponsive so i held the clutch as i was going around 30 and i was going to rev the engine to like 4k but it wouldnt even rev over 3k, and the checkengine light and a symbol that looks like a tool were lit up, so i pulled over and shut the car off and looked under the hood to see if anything was loose, everything was in perfect order, so i started the car and it was still very sluggish and not reving over 3k rpms. so i went ahead to the perfomance shop and talked on the phone to the guy who installed my tune and he said to go home and reflash the same tune back in it, i did this and still nothing, even trying stock tune, still wouldnt rev high,so i called him again,he was stumped and he said he will drive to my house to check it out, well after i got off the phone i began checking fuses and sure enough slot '47' was blown (a 15 amp fuse), i replaced it and the car ran perfect again, well i went and drove itfriday nightand about after an hour of drivin around i went to pass someone and i kinda hammered it but didnt go over 5k rpms, and then i felt it again, and sure enough the fuse 47 had blown again, i dont have an owners manual so i dont know what the fuse goes to.
does anyone know what i can do to make this stop happening and fix the problem, and what does this fuse 47 goto?

Fuse 47 is A/C clutch relay, EVAP canister vent control solenoid, EGR system module, Heated oxygen sensors, Variable valve timing solenoid, Inlet Manifold Runner Control module, Automatic transmission, EVAP canister purge valve

All that stuff in a 15a fuse?
do you have any ideas why the fuse is blowing?

take that sct and check the dtc codes that were thrown, then let us know what they are

Ouch! sorry to hear about that issue. i think definately i am +1 on getting the DTCs read...and then checking in with the tuning shop since it started after the tune.

the tunersaid the DTC's are clear or something like that. did i check them the wrong way?

whenever you throw a check engine light/wrench, a code will be stored in the computer, use the sct to read it and post it on here so people can help you out to let you know what it means. by unhooking the battery, you probably cleared out the codes and now you have nothing. next time you have the dreaded check enine light/wrench, hook up the sct and read the dtc's , write down the code and let us know what they are.

Did you have it tuned for a certain octane and then change octane?

yea i had a 87 octane and thought it was an 89 octane, so ive been using 89, but now im going to do 87 octane.

okay dtc's say the following 7
p0010- a cam pos actuator cir 1
p0020 - a cam pos actuator cir 2
p0102 -mas vol ar flo cir lo I
p0135 -ox s hir cir 1/i (not sure if its 1 or I) s2
p0155 -htd ox s htr cir 2 si
p0443 -evap ctrl cir error
p0446 -evap ctrl cir error

o yea and fuse 52 a 30amp fuse is blown too, and the check engine light is on, i cant replace this fuse till tomorow.

Something has got to be shorting out. Check you JLT installation, unplug and plug everything back in. Look for crossed wires....Did you change the MAF with the JLT? Maybe the wires aren't on right.

its all installed correctly, i didnt change the maf, it was directly bolted onto the jlt, and it is still correct.
does anyone know what the dct's mean?

Something is not installed correctly...otherwise it wouldn't be shorting out and blowing fuses. Your dcts are pretty obvious...

p0010- a cam pos actuator cir 1
p0020 - a cam pos actuator cir 2
p0102 -mas vol ar flo cir lo I
p0135 -ox s hir cir 1/i (not sure if its 1 or I) s2
p0155 -htd ox s htr cir 2 si
p0443 -evap ctrl cir error
p0446 -evap ctrl cir errorThose were all caused by the fuse poping. The fuse controls all of the mentioned failures, and without power...they fail, hence the errors. You need to go back and make sure EVERYTHING is plugged in. Unplug it and replug it. This started happening after you installed your JLT and tune, so something must have gone wrong with the install. Pull it all off and put it all back, change the fuses, reload the tune, and try again.

+1
I'd return it to stock... And start over to rule out coincidences


ORIGINAL: FredTT

Something is not installed correctly...otherwise it wouldn't be shorting out and blowing fuses. Your dcts are pretty obvious...
p0010- a cam pos actuator cir 1
p0020 - a cam pos actuator cir 2
p0102 -mas vol ar flo cir lo I
p0135 -ox s hir cir 1/i (not sure if its 1 or I) s2
p0155 -htd ox s htr cir 2 si
p0443 -evap ctrl cir error
p0446 -evap ctrl cir errorThose were all caused by the fuse poping. The fuse controls all of the mentioned failures, and without power...they fail, hence the errors. You need to go back and make sure EVERYTHING is plugged in. Unplug it and replug it. This started happening after you installed your JLT and tune, so something must have gone wrong with the install. Pull it all off and put it all back, change the fuses, reload the tune, and try again.

okay guys thanks for the advise, i will give this a try, and ill let yall know ho it goes

ORIGINAL: blike

Fuse 47 is A/C clutch relay, EVAP canister vent control solenoid, EGR system module, Heated oxygen sensors, Variable valve timing solenoid, Inlet Manifold Runner Control module, Automatic transmission, EVAP canister purge valve



Fuse 47 is the Brake Pedal Position Switch, EVAP Canister Purge Valve
and the EVAP Canister Vent Control Solenoid only.

Fuse 52 is the rear defrost relay.

http://iihs.net/fsm/?dir=40&viewfile=Power%20Distribution-SJB.pdf