hi guys i have a 1997 ford f150 5.4 litre truck and the truck runs real rough kinda surging in park and in drive and reverse i have a couple oxygen sensor codes P 0171,P0174,P0136,P1131,P1151,and an idle air control valve code
p 1506 any help would be great thank you very much

 

You need to replace the O2 sensors with out heated circuits first. Then erase your codes and see what comes back if any.

 

You do what you want but here is the code association so you have some idea about what is gooing on..
.
136 is a seperate code for bank 2 sensor 2, the cat monitor.
The 171/174 are the same indicators as 1131/1151. The fuel tables are shifted lean likely indicating an air leak in the intake plumbing.
.
This causes the irregular idle speed and is causing the 1506 code for idle 'overspeed' that is 'not always' an IAC fault.
The reason for the over speed is the same as putting your foot on the throttle and allowing more air into the motor only the fault is uncontrolled and unmetered air bypassing the Mass Air meter so is detected as a fault setting the codes to tell you this..
An oil dip stick tube leak can contribute as well. It's part of the intake monitoring.
Leave the rear OX sensor for last since it is not causing the idle issue unless all the codes are involved is a harness ground or cross problem.
Fix the plumbing first, then clean the IAC to be sure it's not contributing to the problem.
Once you get the idle back to normal then address the passenger side rear OX sensor problem.
At some point you will want to clear all codes so your not working with old history and to see what you repaired.
Doing this causes the PCM diagnostic program to test the whole system and relearn the idle over time unless you give it some help with a reboot and run procedure to cover 95% of the relearn in a shorter time.
Good luck.

 

hey guys thanks for the reply i found the vacum leak at the back of the motor the elbow boot had a small crack in it

 

while your at it, check the 3/16 and 1/4 inch vacuum hoses above the drivers side vavle cover. Each about 8 inches long ? I think part of the EGR system. They get hard, brittle and crack... tooo close to the exhaust manifold.

 

Good, you will never get rid of the CEL lit up until the O2's are ok, then fuel system/things will run right and maybe you are off lucky.