Spitting and sputtering

Asked by Sep 14, 2017 at 10:09 PM about the 2006 Ford Mustang GT Premium

Question type: Maintenance & Repair

My Mustang is spitting and sputtering in high gear low
RPMs. Around 2k. I cleaned the air filter and treated the
injectors via sea foam treatment on the tank but it's not
helping. I have the engine code P0340 but both the
sensors have been replaced as well as the alternator. This
issue is out of my league.

3 Answers

Im in North Carolina do you all do delivery here


Believe it or not...you may have a bad alternator with a bad diode back-feeding a/c voltage into your electrical system. Take it to your local O'reilly Auto Parts store and have them test the alternator in the vehicle. Their tested should show if a diode is bad or not. Alternators have more than 1 diode and can still charge with a bad diode. Do some reading at the link......http://www.allfordmustangs.com/forums/2005-2010-mustang-gt-tech/133641-2006- mustang-gt-trouble-code-p0340.html


If the above link does not work, remove the extra space just before "mustang". This site for some reason inserts a space when posting a fairly long link.

Your Answer


Looking for a Used Mustang in your area?

CarGurus has 1,156 nationwide Mustang listings starting at $4,500.

Postal Code:

Ford Mustang Experts

  • #1
    Tom Demyan
  • #2
    Bob Beaman
  • #3
View All

Related Models For Sale

Used Dodge Charger
80 Great Deals out of 806 listings starting at $2,298
Used Chevrolet Corvette
572 listings starting at $4,450
Used Ford Shelby GT500
22 listings starting at $38,922
Used Ford F-150
656 Great Deals out of 13,620 listings starting at $3,000
Used BMW 3 Series
153 Great Deals out of 2,009 listings starting at $2,495
Used Chevrolet Silverado 1500
185 Great Deals out of 11,607 listings starting at $1,700
Used Jeep Wrangler
109 Great Deals out of 2,161 listings starting at $3,990
Used BMW M3
3 Great Deals out of 109 listings starting at $15,990
Used Nissan 350Z
28 listings starting at $8,995
Used Honda Civic
347 Great Deals out of 3,896 listings starting at $1,495

Used Cars For Sale

2018 Ford Mustang GT Premium For Sale
1 listings starting at $54,738
2017 Ford Mustang GT Premium For Sale
41 listings starting at $37,588
2016 Ford Mustang GT Premium For Sale
9 listings starting at $29,799
2015 Ford Mustang GT Premium For Sale
19 listings starting at $30,887
2014 Ford Mustang GT Premium For Sale
5 listings starting at $25,599

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.