Got the dreaded p0340 code today....

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12-28-2011, 03:02 PM

#21

07 Stang

6th Gear Member

Join Date: Jan 2007

Location: Southeast Virginia

Posts: 6,409

Does the issue with the alternator only apply to 4.6 engines?

12-29-2011, 03:29 AM

#22

eolson

3rd Gear Member

Join Date: Nov 2007

Location: Detroit Area

Posts: 894

If you leave your fan mode dial in any other position than off, or the stereo power, before you shut off your car if you have an 05/06 you will be draining the battery. My battery went dead a couple weeks into my first winter here only having the car less than a year.
Guy online told me to turn off any active modes the car can have on from the dash before turning the car off, wait a few seconds, then turn off the car.

I've never had a battery issue since, still going on that second battery I put in the car in February 2007. Erik

Last edited by eolson; 12-29-2011 at 03:33 AM.

03-22-2012, 09:30 AM

#23

moosestang

6th Gear Member

Join Date: Sep 2006

Location: Gainesville, FL

Posts: 11,278

Quote:

Originally Posted by aa4shaw

To All on this message board who have a 2005-2008 Mustang. I am currently sitting at the dealer having my alternator replaced after receiving the dreaded P0340 P0344 error codes. But while sitting here I also found that my lower engine cover was missing! Apparently the Dealer and other oil change places have a bad habit of removing this cover in order to get to the oil filter, and they either inadvertently forget to put it back or they intentionally forget to put it back because its a pain in the butt. That being said, I implore all of you to make sure you have your lower splash shield in place, otherwise you will continue to have your alternator fail due to dirt and water getting in it. If your engine compartment is showing signs of splash back or mud, you have probably had the lower engine cover removed by a lazy mechanic. See link below http://www.partsgeek.com/mparts/skid_plate/ford.html

I don't remember ever having this splash guard on my car. My wifes chysler 300 has one and I've thought about leaving it off every time I change her oil.