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

246,515

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

Your Answer

Add photo

Related Questions

  • 2011 MUSTANG 5.0 ERRATIC IDLE/LOSS OF THROTTLE RESPONSE 1 answer

    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 I...

    2011 Ford Mustang GT Premium

    -

    Maintenance & Repair

  • Why does my 95 Mustang GT 5.0 engine idle rough? 14 answers

    I think my water pump is on it's way out. There is a noise from that area of the motor but I can't tell if it's the water pump or the idler/tensioner pulley (on top). The engine idles rough and also ...

    1995 Ford Mustang GT Coupe

    -

    Maintenance & Repair

  • 89 mustang 5.0 14 answers

    My boyfriend has an 89 mustang with a super charger in it. It runs fine with the hood up but about 5 to 10 minutes with the hood down it completely turns off like you shut the key off.

    1989 Ford Mustang LX 5.0L

    -

    Maintenance & Repair

  • Replacement of CCRM control relay module, on 95 mustang 5.0

    I am in supposed need of replacing my CCRM, the control relay module. It overheated I think and my car died out on me. It's old and an essential computer component of my car. I cannot find much de...

    1995 Ford Mustang GT Convertible

    -

    Maintenance & Repair

  • what size is a factory throttle body for a93 mustang 5.0 lx 2 answers

    what size is the factory throttle body

    1993 Ford Mustang LX 5.0 Hatchback

    -

    Maintenance & Repair

Search Ford Mustang Questions

Ford Mustang Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,500
#2 Bob Beaman
Bob Beaman
Reputation 1,240
#3 COMETGUY61
COMETGUY61
Reputation 1,090
View All

Related Models For Sale

Used Chevrolet Camaro
352 Great Deals out of 31,424 listings starting at $2,500
Used Dodge Challenger
264 Great Deals out of 22,605 listings starting at $7,995
Used Dodge Charger
528 Great Deals out of 28,887 listings starting at $2,500
Used Chevrolet Corvette
219 Great Deals out of 22,127 listings starting at $3,850
Used Ford Shelby GT500
586 listings starting at $22,897
Used Ford F-150
2,181 Great Deals out of 194,801 listings starting at $290
Used BMW 3 Series
1,033 Great Deals out of 31,548 listings starting at $975
Used Jeep Wrangler
271 Great Deals out of 15,924 listings starting at $2,695
Used Chevrolet Silverado 1500
1,966 Great Deals out of 183,481 listings starting at $1,495
Used Nissan 370Z
62 Great Deals out of 2,727 listings starting at $10,994
Used Honda Civic
878 Great Deals out of 85,208 listings starting at $750
Used Honda Accord
1,070 Great Deals out of 68,731 listings starting at $1,000

Used Cars For Sale

2017 Ford Mustang GT Premium For Sale
5 Great Deals out of 4,132 listings starting at $27,500
2016 Ford Mustang GT Premium For Sale
8 Great Deals out of 345 listings starting at $26,799
2015 Ford Mustang GT Premium For Sale
513 listings starting at $24,989
2014 Ford Mustang GT Premium For Sale
222 listings starting at $17,890

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.