Mustang Gt 5.0 idle issue

30

Asked by May 04, 2014 at 10:25 PM about the 1988 Ford Mustang GT Convertible

Question type: Maintenance & Repair

Started revving up to 2500 on its own, I was
just stoped on a hill and it started this,
everything is stock

2 Answers

30

I forgot to add in a link to the video I took https://www.youtube.com/watch? v=MIihOECPPio&feature=youtube_gd ata_player

28,285

The link didn't take me to your video. A couple of things to check: First off, get a manual, it will tell you how to retrieve the Diagnostic Trouble Codes if any are present. There is an IAC (Idle Air Control) valve on the side of your throttle body that may be sticking open. Another concern I have found with this particular car is the TGI switch on the manual Transmission. The Top Gear Indicator tells the computer that it is in 5th and doesn't let the computer drop the RPMs quickly to help with Drivability and Emissions. Retrieving the codes will let you know about this one right away. The last thing I can think of is a vacuum leak. Check the PCV hoses and all related vacuum lines.

Your Answer:

Ford Mustang Experts

  • #1
    Tom Demyan
    Reputation
    5,150
  • #2
    F_O_R
    Reputation
    1,700
  • #3
    Bob Beaman
    Reputation
    1,440
View All

Related Models For Sale

Used Chevrolet Camaro
233 Great Deals out of 26,932 listings starting at $4,000
Used Dodge Charger
317 Great Deals out of 31,958 listings starting at $1,500
Used Chevrolet Corvette
82 Great Deals out of 15,086 listings starting at $3,700
Used Ford F-150
2,281 Great Deals out of 188,281 listings starting at $1,300
Used BMW 3 Series
987 Great Deals out of 30,188 listings starting at $900
Used Jeep Wrangler
204 Great Deals out of 15,045 listings starting at $3,000
Used BMW M3
16 Great Deals out of 1,500 listings starting at $4,995

Used Cars For Sale

2014 Ford Mustang GT Convertible For Sale
46 listings starting at $20,983

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.