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eauto
eauto, The Car Guy
Category: Jeep
Satisfied Customers: 15075
Experience:  ase mechanic 16 Plus years in the field
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Cylinder 3 is running lean code came up on code reader now

Customer Question

cylinder 3 is running lean code came up on code reader now its burning oil and the low oil pressure light comes on at idle any ideas
JA: Sometimes things that you think will be really complicated end up being easy to fix with a Jeep. The Jeep Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so he can help you best.
Customer: did you read my first post
JA: Are you hoping to fix this yourself?
Customer: yes
JA: Great! What have you tried so far?
Customer: not sure what sensor may be gone
JA: Is there anything else the Jeep Mechanic should be aware of about your Jeep?
Customer: muffler needs to be fixed
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Jeep Mechanic about your situation and then connect you two.
Submitted: 9 months ago.
Category: Jeep
Expert:  eauto replied 9 months ago.

what year and model jeep? motor size?

Customer: replied 9 months ago.
2002 Jeep Liberty 3.7L V6
Expert:  eauto replied 9 months ago.

how many miles on it?

Customer: replied 9 months ago.
170,000 km
Expert:  eauto replied 9 months ago.

have you manually checked oil pressure? has a compression test been performed?

Customer: replied 9 months ago.
No
Expert:  eauto replied 9 months ago.

it sounds like it will likely need to be pulled and rebuilt... I would verify oil pressure first and compression, But it sounds like rebuild or replace will be the answer

Customer: replied 9 months ago.
okay, but why does it say cylinder three is running lean?
Expert:  eauto replied 9 months ago.

what is the code #?

Customer: replied 9 months ago.
p0171
Expert:  eauto replied 9 months ago.

that's lean bank one not lean cylinder 3

Expert:  eauto replied 9 months ago.

lean on one bank is usually caused by a vacuum or intake leak..