I have posted on other threads,thought id try a new one.

Truck runs like crap,seems to idle ok ,but sometimes misses and sputters when i give it throttle,and other times its ok.When i put it to the floor,while driving,it bogs down,like it isnt getting enough fuel.If i park it for a bit and restart,sometimes it misses and sputters at idle and cant get any revs at all.When this happens,i give it some gas,i get a popping noise in the air filter tube.I can let it sit for awhile and maybe it`ll run ok ,and some times it doesn`t.

Keep getting codes 171,174,1401(pending)and 1409(pending)

I`m thinking i need a new DPFE or EGR vacuum regulator sensor.

Also wondering if the pre filter on the fuel pump might be dirty enough to restrict fuel pressure and set off these codes

Sure could use some help,truck is in great shape and only 130000 km,but i cant trust it on the highway this way.

 

Check this out for your 171 and 174 codes

http://www.obd-codes.com/trouble_cod...gen-sensor.php

 

Well,i got rid of the 1401 and 1409 codes by cleaning the filter on top of the vacuum regulator solenoid.Sure made a difference so far.I`m still getting the 171 and 174 codes tho,i cant seem to find any vacuum leaks,cleaned the MAF.So i think it might be the filter on the fuel pump being dirty.Can you buy just the filter?

 

Check out the Mass Air Flow.For the popping noise...

 

i already did clean the MAF

 

your PCV hoses at the back of the TB are prolly bad. very very common. it is the PITA hose alllll the way in the back up against the firewall.

This is prolly why you are showing both banks lean.

 

i`ll try the unlit propane torch and see if theres a leak,it sure is a hard one to get at.Might just take it off and see if its collapsed too.

 

well i went all over the engine with the propane,cant find any leaks.Also took off the pcv hose ,it looks fine.Took off the egr valve and cleaned it.Still getting lean codes.The truck works great in town ,but still hesitates and sputters when i put the peddle to the floor.Still acts like its not getting enough gas at high speed.

 

Problem solved!!Put in a new fuel pump ,the truck works like a new one,no codes either.

Thanks for all the help!