2 DTC P0340 and P0344

[kleistang]

Holy crap... did someone actually use the search button!!?!?!

lol i always use it, haha but sometimes i get more confused haha. like when i started looking for the 15" wheels

 

[don_w]

old post. but i got this codes tonight. and the car was running rough, like misfiring. did urs did the same thing or it drove the same?

Mine never ran rough when I had those codes.

 

[kleistang]

Mine never ran rough when I had those codes.

may this really be the sensors then ?

 

[Gold'n'Black]

i got this last night at the track and well i guess i might have to switch the pullies back and take it to the stealership

 

[kleistang]

mine came on but seems like i load the stock tune istead of the performance tune. its fixed already

 

[ren274u]

When I got the code my car would hesitate off of idle, but drove find other than that. I also had the factory one replaced under warranty and that one failed also. I replaced it with the PA 130a unit.

 

[kleistang]

the thing is that ford uses remanufactured alternators. what comes out of ur car, may be in mine next month.

 

[LAK3RS]

I guess I'm gonna throw a quick question in here! Is the 200 amp alternator overkill?

 

[ZmanM3]

Depends on how many electronics you have drawing power.

 

[Deez-67]

~~ Searcher ~~

Sorry I know this is an old thread.

I just got these two codes last (P0340 & P0344) the car is running like shit even more so when it's warm and it's putting itself in safe engine mode. Do I start with the alternator or the switches? also i'm not running anything off the batt but my Zex kit. From what I read everyone says stay away from a Ford OME alternator any brands that anyone is happy with?

 

[Deez-67]

Guess I need to start a new thread about alternators

 

[Hawgman]

Best bet would be to pull the alternator and have it tested. But 99.9% of the time someone gets those codes, it is the alternator.

 

[Deez-67]

Best bet would be to pull the alternator and have it tested. But 99.9% of the time someone gets those codes, it is the alternator.

That sounds like where i'll be starting then.

 

[Deez-67]

ok sorry for keep bring this page up but

I drove my 05 at lunch about 30 miles or so... once it got hot it really went to shit... the RPMs where all over the place the car was jumping and dieing then jumping and dieing it finaly put itself in safe engine mode.

Is this the same problmes anyone else has had?

 

[scramblr]

ok sorry for keep bring this page up but

I drove my 05 at lunch about 30 miles or so... once it got hot it really went to shit... the RPMs where all over the place the car was jumping and dieing then jumping and dieing it finaly put itself in safe engine mode.

Is this the same problmes anyone else has had?

My car never drove bad due to the codes/alternator, but I knew it was going to go out. Ford replaced it once based on the TSB and the second time I got a PA Performance alternator. Have not had any issues since.

 

[Deez-67]

My car never drove bad due to the codes/alternator, but I knew it was going to go out. Ford replaced it once based on the TSB and the second time I got a PA Performance alternator. Have not had any issues since.

right on... Well I'm hoping to get the alternator replaced tonight.

 

[don_w]

~~ Searcher ~~

Rep points for that!

 

[chrismc]

old thread but i did search hahaha

So i have the 2 p0340 and p0344 codes

I have a slight stumble or buck at light load, my volt gauge is still good,batt is good but i hear a whine coming from the front of the engine. I have a pa 130 amp alt in the mail. Do you guys think the alt will fix my stumbling issue?

 

[Infamous05]

Ok so I have been watching this thread because a few weeks ago I got the code. Well last night leaving a friends mine got it again. I came home erased the code and everything was fine. Tonight I went back over to his house, actually this afternoon and we went to leave. The car started surging and shaking almost like a misfire. I turned it off started it back up and there it was again. We got the car home, took the alternator off and had it tested. Tested out perfect. But I noticed my head lights surging under load. I am pretty confident my ALT is going out but why test good.
Code was p0340

 

[UltraKla$$ic]

Ok so I have been watching this thread because a few weeks ago I got the code. Well last night leaving a friends mine got it again. I came home erased the code and everything was fine. Tonight I went back over to his house, actually this afternoon and we went to leave. The car started surging and shaking almost like a misfire. I turned it off started it back up and there it was again. We got the car home, took the alternator off and had it tested. Tested out perfect. But I noticed my head lights surging under load. I am pretty confident my ALT is going out but why test good.
Code was p0340

The alternator should be oscillated tested. The majority of the quick test that are done can, but may not reveal a failing alternator.

Also check the cam position sensor.