My truck takes 2-3 times to crank. When I stop the idle is rough and it dies often. Autozone read the codes p1131 p0171 p0340 p1151 p0174 p0401. Does anyone know where I should start?

It is a F150 2002 V6.

Any idea where I should start? Thanks

 

Start with the P0340:

http://www.obd-codes.com/p0340

The 171/174/1131/1151 codes are all lean codes which usually indicate a major vacuum leak. The 401 is an EGR issue.

 

FWIW, I've had all those codes on at once. Minus the P0401.

It looks like you're due for a new set of intake mani gaskets and isolator bolts, since your leak is so bad that the O2s are stuck reading lean. So, that knocks out four codes.

The P0340 came from the CPS magnet itself actually breaking off and laying in the synchro housing. That called for lots of punching the gas pulling away from stops.

Not sure about the EGR code, but you may want to look into cleaning those EGR ports really good when you've got the intake off.