Question about 2004 Ford Mustang

1 Answer

Car Idles Rough and Feels Like it has Lost Power

Have a 3.7 Mustang having issues. Car idles rough when stopped. When driving, the best way to describe it is, I feel like I do not have full power, although this will suddenly change and my car feels normal again for a few minutes before feeling as if I lost power again. check engine light is on will blink and then go solid. Haven't had a chance to run diags yet. Just curious if anyone would have an idea as to what would be the cause?

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1 Answer

Have to check for codes & diagnose them,not a guessing
game,your issues & someone else may or may not be the same

My guess is you never check scan tool data,road test with scanner
& look at data or do any preventative maintenance

Ignition Coils & Front O2 Sensors are long gone on a 2004 ford
product,have to know when to replace things

Do you replace Spark Plugs every 3 years
Brake Fluid every 2 years
Trans & Power Steering Fluids every 3 years

Posted on Mar 26, 2014

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Posted on Jan 02, 2017

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  • 218 Answers

SOURCE: running rough/service engine soon light

WITH A #8 MISFIRE U NEED TO REMOVE THE PLUG AND TAKE A LOOK.THE SMOKE FROM THE EXHAUST SOUNDS LIKE RAW FUEL.BAD PLUG,COIL OR INJECTOR.LOW COMPRESSION?

Posted on May 04, 2009

  • 1 Answer

SOURCE: idle rough but not all the time also engine seems

changed harmonic balancer reset time

Posted on Oct 03, 2009

Testimonial: "runs like new "

  • 168 Answers

SOURCE: car is running rough when driving it's hesitating

is this a recent thing try running some injector cleaner through it

Posted on Dec 22, 2009

johnjohn2
  • 5763 Answers

SOURCE: the engine on my mustang v6 2002 idles fast then

This can be caused from a vacuum leak or yes the idle sensor, this part is called an idle air control valve, also try checking for vacuum leaks and then clean the throtlebody good, use throtlebody cleaner and an old tooth brush to clean, sometimes they are just dirty.

Posted on Dec 03, 2010

  • 1 Answer

SOURCE: car feels sluggish driving then sudden loss

i have just bought 05 1.4petrol, when driving in gears 1/2/3 seems ok but as soon as i hit 30ish and put into 4th / 5th there is now power when foot is to the floor, it takes an age to pick up speed, ive taken it back to garage where bought from , he has put it on comp and said there are no apparant problems, hes told me that the focus just dont have that great power?????
any ideas

Posted on Jun 01, 2011

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It can be issue with IAC( idle air control valve) causing the problem.


There are many other possibilities causing these idle issues.Engine idles rough.

There are few help links with solutions to troubleshoot such idle issues.

I suggest you refer the link below and follow its troubleshooting details:------

Click the link below:-----
Bad miss at idle? http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

-----------
Stumbling and stalling at idle after engine rebuild?

http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html

------------
1999 Ford F-150 Idles rough and quits when gas pedal is pressed less?

http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html

---------
Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

------------------
Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

-----------


Cold start problem and vehicle shudder around 2500 to 3500 rpms
http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

----------
Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

-----------
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http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html

--------


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http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

-------------
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http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html

------------
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http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

-----------
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http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

---------

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http://repairhelpcenter.blogspot.com/2012/10/high-idle-problem.html

-------
While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

---------
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http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html

--------
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http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

-------
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http://schematicsdiagram.blogspot.in/2012/03/vehicle-stumbling-at-idle-and-shows.html

----------
Rough idle, staling and Erratic shifting?

http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html

-----------
While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

---------

These details will help.

Thanks.

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