I'm just a little annoyed that Ford knows about the problem but made no effect to let customers know about it or help with the cost factor to remedy. It should have been a recall issue. It took a lot of searching on the internet but luckily I found enough people who took the time to document what was happening. I'm glad I took some time to search this out or I would have just replaced the alternator with another stock alternator only to have the same problem over and over again. Finally found Ford's TSB 06-2-9 online to help me understand the problem. I haven't installed the replacement alternator yet but my fingers are crossed that this will get rid of the P0340 code constantly popping up.

The check engine light had been coming on/going off (within a few days time, never extended periods of time lit) for several thousand miles--the owners manual states this light shows a "fuel" related problem.

The car had been surging/chugging since its purchase (brand new only 526 miles on the odometer) when slowing from freeway speed to street speed (usually on an off-ramp merge situation) so I changed the fuel filter, the type of gas used in the vehicle, I tightened & re-tightened the gas cap, the light would go out after a few days. The dealership was notified of this surging problem but has stated from the start they believe it is a lagging transmission shift (like I don't know the difference between a downshift and a sudden inexplicable loss of power).

The car completely shut down on an off-ramp right in front of a Ford dealership (NO CHECK ENGINE LIGHT ON AT TIME OF FAILURE) & I was able to limp it in. $165 later they told me my CAI was loose and had caused the vehicle to die, their solution: tightened the air inlet tube clamps. BTW I have constantly checked my CAI & the air inlet tube has never been loose, nor have I needed to re-tighten the clamps holding it on.

After the above-mentioned incident the engine light came on more frequently, but would go out after a few days as time passed, and the vehicle started to surge with any electrical items used while driving (freeway speeds)-the car would surge in time with the blinker, surge if a window was rolled up or down, surge with the bass of my stereo kicking in, you get the point.

Finally, this month and four years of on again off again problems--the car dash "blacked out" while on the freeway, no lights, no speedometer, nothing! The car lost power while I still had my foot on the gas, sputtering so bad I had to pull over (all this happened in a matter of seconds). After the dealership had listened to my description of the failure, they automatically said it was the alternator-and they would check it.

It was the alternator, and I have an extended warranty, but after looking up blogs, this is known (among mustang enthusiasts) to be a common problem with the Mustang GT '05-'10. The codes pulled with engine light on are P340 & P344-left bank cam sensor problems.

How many people have had to replace the alternator on this style/year Mustang without knowing it is an ongoing Ford problem? I am frustrated that I had to use my extended warranty (which was going to be refunded if I didn't use it) with this problem that Ford must know about!

They did not need a government bailout because Ford fleeces their customers daily! Have you ever looked at a dealership writeup about your car problem, they always put "customer states "-never changing it when they test drive or run the vehicle diagnostic, so no one is the wiser when it comes to massive manufacturer failures!

The vehicle doesn't have a check engine light on now, but the surge/chug (when slowing down from freeway speed to street speed) still occurs.

Yes, I am going to complain about this to OTSB!