2011 MUSTANG 5.0 ERRATIC IDLE/LOSS OF THROTTLE RESPONSE

Asked by Jul 20, 2015 at 05:52 AM about the 2011 Ford Mustang GT Premium

Question type: Maintenance & Repair

I HAVE A 2011 MUSTANG GT 5.0, 6 SPD, ROUSH AXLEBACK EXHAUST, CAI, AND A TUNE. CAR WAS DRIVING LIKE A DREAM. PARKED IT FOR TWO DAYS. THEN, OUT OF NOWHERE, MY IDLE IS ALL OVER THE PLACE. WHEN YOU TURN IT ON, IT'LL GO UP AND DOWN BETWEEN 1-3K RPM FOR SEVERAL MINUTES BEFORE FINALLY SETTLING (AND SOMETIMES STALLING OUT) JUST UNDER 1. THEN, WHEN IM DRIVING, THE CAR HESITATES? WITH THE TUNE MY THROTTLE USED TO SKYROCKET AND NOW IT SEEMS THAT IT WILL SLOWLY CLIMB AND HOLD ON ITS OWN WHEN SHIFTING GEARS. NOT TO MENTION MY EXHAUST NOW SOUNDING MUCH MORE MUFFLED WITH ALOT OF POPPING NOISE? FROM WHAT I'VE READ ONLINE I MAY HAVE A VACUUM LEAK SOMEWHERE BUT NOT TO SURE. ANY ADVICE WOULD HELP!!!!

1 Answer

293,165

Sounds ignition related or atiming issue, open the hood and see if something worked loose or a critter chewed through some wiring.

Your Answer:

Ford Mustang Experts

  • #1
    Tom Demyan
    Reputation
    5,060
  • #2
    F_O_R
    Reputation
    1,530
  • #3
    Bob Beaman
    Reputation
    1,430
View All

Related Models For Sale

Used Chevrolet Camaro
237 Great Deals out of 27,289 listings starting at $2,077
Used Dodge Challenger
144 Great Deals out of 24,024 listings starting at $7,995
Used Dodge Charger
278 Great Deals out of 32,022 listings starting at $1,850
Used Chevrolet Corvette
96 Great Deals out of 15,044 listings starting at $3,620
Used Ford Shelby GT500
465 listings starting at $25,500
Used Ford F-150
2,300 Great Deals out of 208,486 listings starting at $1,300
Used BMW 3 Series
857 Great Deals out of 31,323 listings starting at $1,250
Used Jeep Wrangler
226 Great Deals out of 16,663 listings starting at $3,000
Used BMW M3
23 Great Deals out of 1,488 listings starting at $6,399
Used Nissan 370Z
29 Great Deals out of 1,958 listings starting at $9,990
Used Chevrolet Silverado 1500
1,764 Great Deals out of 153,598 listings starting at $1,000
Used Honda Accord
574 Great Deals out of 103,380 listings starting at $950

Used Cars For Sale

2018 Ford Mustang GT Premium For Sale
2,766 listings starting at $33,290
2017 Ford Mustang GT Premium For Sale
620 listings starting at $25,995
2016 Ford Mustang GT Premium For Sale
256 listings starting at $20,970
2015 Ford Mustang GT Premium For Sale
344 listings starting at $19,900
2014 Ford Mustang GT Premium For Sale
131 listings starting at $14,341

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.