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P0172 system to rich bank 1

Discussion in '3rd Gen 4Runners (1996-2002)' started by Bkallen541, Mar 20, 2023.

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Mar 20, 2023 at 7:47 PM

#1

#1
Bkallen541 [OP] New Member

Joined:

Mar 20, 2023

Member:

#31860

Messages:

2

Gender:

Male

First Name:

Brad

Vehicle:

1999 black 4runner

Lift

So my 4Runner recently threw the p0172 system to rich bank 1 and I just replaced the fuel injectors and a couple of the vacuum lines I’ve cleaned the mag sensor and replaced the spark plugs already to I’m kinda at a loss of we’re to go next has anybody ever felt with this issue

Bkallen541, Mar 20, 2023

#1

Mar 21, 2023 at 3:23 AM

#2

#2
roboturner Dead Eyed

Joined:

Nov 4, 2022

Member:

#29416

Messages:

156

Colorado

Vehicle:

‘98 NW 3.4L 5MT SR5 | '18 6MT DCSB Tacoma

This is probably the best thread I’ve seen on the issue. It can be a bear to figure out, you’ll just have to systematically trouble shoot along

https://www.tacomaworld.com/threads/another-p0172-thread.744333/

roboturner, Mar 21, 2023

#2

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