it is a 1999 f150 5.4 125,000. truck dies when you make a hard right turn, every time. fine on hard stop and hard left turn.thanks in advance.

 

This may be way off the mark, but years agao I had a car that would die when taking a hard turn. I don't remember if the direction had any influence on it or not. Whe I finally figured it out, I thought I was crazy. Turned out it had a 'low oil pressure switch'. I was low on oil and a hard turn left the pump pickup exposed. That second or two of no oil pressure caused the switch to kill the fuel pump. Just an idea.

 

Well i hate to be the one to say it but that **** is WHACK! I have had P71 Police Package cars do that same thing to me at work but never heard of it on an F150. On the Vics it was bad wiring that ran through the core support. Mostly would do it on right turns/up hill/and rained recently. Cant even imagine what is doing that on your truck,, but i would check for harnesses rubbing against metal. Check your grounds, loose or corroded, may be the problem

 

thanks guys.just got this truck in so i haven't gone over any of it yet. don't know the history of it either, so i was trying to find a starting point.thanks again.

 

haha! found the problem, JET power module basically falling in and out of pcm. can i just chuck this thing, or will thetruck have to be reflashed or something?

 

if it is one of the piggyback modules you shouldn't have to reflash anything. Just pull it and plug it back in and see if it runs