1999 Ford Mustang 3.8

5

Asked by Feb 26, 2016 at 04:23 PM about the 1999 Ford Mustang STD Coupe

Question type: Maintenance & Repair

It seems at low speed my car randomly decides to shut down some cylinders or feels that way.  Car loses power you can push the pedal on the floor and get slow acceleration.  I have changed the plugs, wires, coil pack.  When you shut the car off and restart it all is fine for the first couple minutes or seconds depending.  This has got me really confused hopefully someone can help.  Also when this happens the car begins to idle really rough someone that was listening to the car when this happened I gunned the gas and they noticed that a soot type cloud came out the exhaust.

4 Answers

17,320

Sounds like your vehicle just needs a good cleaning and blowing out. First check air filter and replace if necessary clean throttle with throttle body cleaner change fuel filter if have not done so in a while add fuel injector cleaner to gas tank and take vehicle out on the road and hit the passing gear a few times this will blow out the gum and carbon build up in the engine.

5

Forgot to mention air filter is new and have also cleaned the throttle body. Have also ran injector cleaners as well. The issue happened a few months back I changed the plugs, wires, coil pack and all seemed good then today the issue started happening all over again. Its giving me a headache lol

17,320

Have you changed the fuel filter ?

5

This is one thing that I have not none. When you nail the gas you get some black smoke as well but only when putting it on the floor almost like its getting to much fuel in the engine.

Your Answer

Add photo

Related Questions

  • 2001 Mustang 1 answer

    I have a 2001 Mustang 3.8 and want to swap out the engine/transmission. Can someone please tell me what year of Mustang I can swap into?

    2001 Ford Mustang Base

    -

    Maintenance & Repair

  • how do i find what transmission is in my 1999 mustang 5 answers

    i have a 1999 mustang 3.8 v6 automatic on the hog head there is a 7 8 and a S stamped on it . is that the type of tranny or are the numbers located somewhere else on it. was thinkin of buying another ...

    1999 Ford Mustang

    -

    Maintenance & Repair

  • what years will interchange without swaping wiring harness on my auto transmission 1 answer

    i have a 1999 mustang 3.8 auto i am going to do a tranny swap from auto to auto what years can i get one from and put in with out changing wiring

    1999 Ford Mustang

    -

    Maintenance & Repair

  • 2004 Mustang 3.8 Into a 2000 Ford Mustang????? 1 answer

    My question is: What needs to be done to put a 2004 Mustang 3.8 automatic engine, into a 2000 Mustang manual trans?

    2000 Ford Mustang Base

    -

    Maintenance & Repair

  • supercharger from a gtp to a 3.8 mustang 1 answer

    Will a supercharger from a gtp 96 and newer bolt straight up to a 99 3.8l mustang i was told its plug and play but itd be putting gm parts in a ford any input on this

    1999 Ford Mustang STD Coupe

    -

    Car Customization

Mustang

Looking for a Used Mustang in your area?

CarGurus has 43,035 nationwide Mustang listings starting at $1,699.

ZIP:

Search Ford Mustang Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford Mustang Experts

#1 Tom Demyan
Tom Demyan
Reputation 3,990
#2 FordNut
FordNut
Reputation 1,230
#3 COMETGUY61
COMETGUY61
Reputation 990
View All

Related Models For Sale

Used Chevrolet Camaro
417 Great Deals out of 40,746 listings starting at $3,500
Used Chevrolet Corvette
277 Great Deals out of 20,556 listings starting at $3,688
Used Ford Mustang SVT Cobra
266 listings starting at $3,900
Used Ford F-150
3,110 Great Deals out of 209,134 listings starting at $1,200
Used BMW 3 Series
1,558 Great Deals out of 39,015 listings starting at $1,200
Used Jeep Wrangler
520 Great Deals out of 18,486 listings starting at $2,500
Used Chevrolet Silverado 1500
2,586 Great Deals out of 152,648 listings starting at $1,500
Used Honda Accord
1,009 Great Deals out of 75,847 listings starting at $899

Used Cars For Sale

2017 Ford Mustang For Sale
7 Great Deals out of 20,159 listings starting at $18,950
2016 Ford Mustang For Sale
59 Great Deals out of 3,648 listings starting at $16,999
2015 Ford Mustang For Sale
83 Great Deals out of 3,314 listings starting at $15,553
2014 Ford Mustang For Sale
75 Great Deals out of 2,829 listings starting at $9,500
2013 Ford Mustang For Sale
29 Great Deals out of 1,357 listings starting at $9,995