code P0171 & P0174

[burt ragio]

Check engine light came on. Scanner read codes as right & left banks are lean. My question is it O2 sensors R&L banks ? Last thing I want is just to through parts at it.
What is the correct way to approach the fix ? TY.

[Ambitious1]

This may help you:

https://www.mercurymarauder.net/forums/showthread.php?67631-Got-P0171-and-P0174-codes&p=985543

[burt ragio]

This may help you:

https://www.mercurymarauder.net/forums/showthread.php?67631-Got-P0171-and-P0174-codes&p=985543


Great info TY.

[burt ragio]

So I took a closer look and found the problem. Turned out to be a air leak. I need help as to identify the name of part needed. The bad piece is made of rubber were the pvc tube is connected to the intake manafold. It also has two small coolant lines connected to it. I have no idea what it is called ? TY

[Guittard22]

So I took a closer look and found the problem. Turned out to be a air leak. I need help as to identify the name of part needed. The bad piece is made of rubber were the pvc tube is connected to the intake manafold. It also has two small coolant lines connected to it. I have no idea what it is called ? TYThis happened to me a few weeks back


What a pain but it was a air leak as well

We need to meet up its been to dam long!

Sent from my SM-N960U using Tapatalk

[sspmustang]

I ran into this recently also, but couldn't track down the correct replacement tube. I did source one for a 2003 Expedition, while the tube was different, the rubber boot fit just fine. P/N #3W3Z6758BA.

[blazen71]

An alternative could be a silicone reducer sleeve.

https://www.pegasusautoracing.com/group.asp?GroupID=COOLREDUCSTR TK