Why does my mustang shut off after 15 min?

Asked by Jun 16, 2013 at 12:08 PM about the 1999 Ford Mustang Convertible

Question type: Maintenance & Repair

1999 mustang with a v-6 shuts off after 15 min then you need to wait 10 min before it will start any ideas ?

2 Answers

28,845

hook up a fuel pressure guage. let it run and when it quits see if its fuel pressure that you are loosing. if not then you must be losing spark.

1 of 1 people found this helpful.
26,075

Nice car and good, reliable powertrain. kbro is most likely correct since electrical components (like fuel pumps) heat up, lose contact, cool off and then work again. Any other concerns? Check engine light, ping or backfire (muffled pop sound) on acceleration? You can try listening for the fuel pump when it's cooled off and when it fails - it doesn't always indicate a bad pump but it can. When the car has been sitting a while, turn off all the accessories and roll the windows up. Turn the Ignition to "ON" and listen for a humming in the back of the car - it only lasts for 3 seconds when the engine is off so you may have to do it several times. That hum is the fuel pump. Run the vehicle until it stops again and check for the sound again the same way. No noise - no fuel.

1 of 1 people found this helpful.

Your Answer

Ford Mustang Experts

  • #1
    Tom Demyan
    Reputation
    4,680
  • #2
    Bob Beaman
    Reputation
    1,320
  • #3
    F_O_R
    Reputation
    1,130
View All

Related Models For Sale

Used Chevrolet Camaro
466 Great Deals out of 31,525 listings starting at $3,550
Used Chevrolet Corvette
197 Great Deals out of 18,735 listings starting at $3,850
Used Ford Mustang SVT Cobra
7 Great Deals out of 307 listings starting at $5,000
Used Ford F-150
2,848 Great Deals out of 212,983 listings starting at $1,295
Used BMW 3 Series
1,090 Great Deals out of 33,844 listings starting at $1,000
Used Chevrolet Silverado 1500
2,457 Great Deals out of 174,097 listings starting at $699
Used Jeep Wrangler
429 Great Deals out of 18,884 listings starting at $2,900
Used BMW M3
24 Great Deals out of 2,113 listings starting at $6,599
Used Honda Civic
736 Great Deals out of 65,148 listings starting at $1,350

Used Cars For Sale

2018 Ford Mustang For Sale
3,830 listings starting at $21,800
2017 Ford Mustang For Sale
73 Great Deals out of 12,823 listings starting at $18,094
2016 Ford Mustang For Sale
80 Great Deals out of 3,063 listings starting at $13,991
2015 Ford Mustang For Sale
60 Great Deals out of 2,844 listings starting at $12,991
2014 Ford Mustang For Sale
94 Great Deals out of 2,753 listings starting at $8,999

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.