Ghost alarms
08-11-2013, 05:44 PM
#1
3rd Gear Member
Thread Starter
Join Date: Mar 2013
Location: Lexington, SC
Posts: 701
Ghost alarms
So I was driving down the road today and 3 separate times my dash alarms started going off saying all my fluids were low, emergency brake was on, TC was off and all my gauges quit working except my tac, speedo, oil temp and boost, my radio turned off, windows and locks wouldn't work. I pulled over checked all my power connections under the hood and everything was tight. My car ran, idled and started perfect but the warnings would come back on and then all go off after a couple mins. Any ideas of what could be causing this. My cigarette charger in the arm rest quit working a few days again but other then that I haven't had any other problems from the car. The check engine light came on the last time it did it and hasn't gone off since. I am going to scan it tomorrow but all on board computer checks said everything was OK. Any ideas of what's causing this would be great.
Figures something would happen this close to be going back.
Figures something would happen this close to be going back.
08-11-2013, 05:49 PM
#2
So I was driving down the road today and 3 separate times my dash alarms started going off saying all my fluids were low, emergency brake was on, TC was off and all my gauges quit working except my tac, speedo, oil temp and boost, my radio turned off, windows and locks wouldn't work. I pulled over checked all my power connections under the hood and everything was tight. My car ran, idled and started perfect but the warnings would come back on and then all go off after a couple mins. Any ideas of what could be causing this. My cigarette charger in the arm rest quit working a few days again but other then that I haven't had any other problems from the car. The check engine light came on the last time it did it and hasn't gone off since. I am going to scan it tomorrow but all on board computer checks said everything was OK. Any ideas of what's causing this would be great.
Figures something would happen this close to be going back.
Figures something would happen this close to be going back.
Sounds like your system isn't getting fully charged or holding a steady charge, thus resulting in the ECU turning off functions and throwing the car into "limp mode"
08-11-2013, 07:14 PM
#5
I've seen others exhibit the same symptoms you are describing @ 16,000mi.
You're better off just replacing it with an aftermarket one.
08-11-2013, 07:55 PM
#6
3rd Gear Member
Thread Starter
Join Date: Mar 2013
Location: Lexington, SC
Posts: 701
Any idea what you paid for yours? Any place better then others for a good one. I'm use to the old Chevy alternators on all my old rides. This is my first mustang and want to make sure I get a good one and only replace it once.
08-11-2013, 08:35 PM
#7
4th Gear Member
Join Date: Feb 2012
Location: North Carolina
Posts: 1,087
Alternator or battery probably. I would have the battery load tested first to rule it out. Then look to the alternator.... They are bad on the 07-09 Shelby's to go out. Lots of RPMs kill them too..... I actually run a larger pulley on the alternator to keep its rpm's under spec. Anything spinning the enine over 6300 rpms and it will be hard on it, do it excessively (like me) and it will die every time. If you do end up replacing the alternator, make sure to get a GOOD one (not advance, auto zone, o'riellys)... The alternator is VERY important on the GT500s. I know of a couple of guys that killed engines because the alternator went out and the car went lean. Not trying to freak you out, but just saying the alternator is VERY important. Carquest and Napa offer DECENT reman units, and then there is always PA performance for a little extra output.
08-11-2013, 09:32 PM
#8
Alternator or battery probably. I would have the battery load tested first to rule it out. Then look to the alternator.... They are bad on the 07-09 Shelby's to go out. Lots of RPMs kill them too..... I actually run a larger pulley on the alternator to keep its rpm's under spec. Anything spinning the enine over 6300 rpms and it will be hard on it, do it excessively (like me) and it will die every time. If you do end up replacing the alternator, make sure to get a GOOD one (not advance, auto zone, o'riellys)... The alternator is VERY important on the GT500s. I know of a couple of guys that killed engines because the alternator went out and the car went lean. Not trying to freak you out, but just saying the alternator is VERY important. Carquest and Napa offer DECENT reman units, and then there is always PA performance for a little extra output.
when mine went, it was $279 thru NAPA cuz Ford hadn't acknowledged the problem yet, so there wasn't any demand for them...so i waited 5 days for them to find one. Not so much of a problem now, but Steve is right...if it is the alternator, don't skimp...pay a few extra $$ for the little bit of "peace of mind"
